https://github.com/bassiounix updated
https://github.com/llvm/llvm-project/pull/134214
>From 620bdbed2b372b97b66147684d4ded5b666c7786 Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Thu, 3 Apr 2025 10:08:59 +0200
Subject: [PATCH 01/17] add `bf16`/`BF16` suffix support
---
clang/include/clang/Lex/LiteralSupport.h | 1 +
clang/lib/Lex/LiteralSupport.cpp | 17 ++++++++++++++++-
clang/lib/Sema/SemaExpr.cpp | 2 ++
3 files changed, 19 insertions(+), 1 deletion(-)
diff --git a/clang/include/clang/Lex/LiteralSupport.h
b/clang/include/clang/Lex/LiteralSupport.h
index ea5f63bc20399..1907cfc365d97 100644
--- a/clang/include/clang/Lex/LiteralSupport.h
+++ b/clang/include/clang/Lex/LiteralSupport.h
@@ -77,6 +77,7 @@ class NumericLiteralParser {
bool isFloat : 1; // 1.0f
bool isImaginary : 1; // 1.0i
bool isFloat16 : 1; // 1.0f16
+ bool isBFloat16 : 1; // 1.0bf16
bool isFloat128 : 1; // 1.0q
bool isFract : 1; // 1.0hr/r/lr/uhr/ur/ulr
bool isAccum : 1; // 1.0hk/k/lk/uhk/uk/ulk
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index 20933cc8dee69..ab0d301a70fbd 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -917,6 +917,7 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
isFloat = false;
isImaginary = false;
isFloat16 = false;
+ isBFloat16 = false;
isFloat128 = false;
MicrosoftInteger = 0;
isFract = false;
@@ -973,11 +974,20 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
bool isFPConstant = isFloatingLiteral();
bool HasSize = false;
bool DoubleUnderscore = false;
+ bool isBF16 = false;
// Loop over all of the characters of the suffix. If we see something bad,
// we break out of the loop.
for (; s != ThisTokEnd; ++s) {
switch (*s) {
+ case 'b':
+ case 'B':
+ if (isBFloat16) break;
+ if (isBF16) break;
+ if (HasSize) break;
+
+ isBF16 = true;
+ continue;
case 'R':
case 'r':
if (!LangOpts.FixedPoint)
@@ -1022,7 +1032,11 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
(LangOpts.OpenMPIsTargetDevice && Target.getTriple().isNVPTX())) &&
s + 2 < ThisTokEnd && s[1] == '1' && s[2] == '6') {
s += 2; // success, eat up 2 characters.
- isFloat16 = true;
+ if (isBF16) {
+ isBFloat16 = true;
+ } else {
+ isFloat16 = true;
+ }
continue;
}
@@ -1183,6 +1197,7 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
isSizeT = false;
isFloat = false;
isFloat16 = false;
+ isBFloat16 = false;
isHalf = false;
isImaginary = false;
isBitInt = false;
diff --git a/clang/lib/Sema/SemaExpr.cpp b/clang/lib/Sema/SemaExpr.cpp
index 3af6d6c23438f..b4210fc22ae52 100644
--- a/clang/lib/Sema/SemaExpr.cpp
+++ b/clang/lib/Sema/SemaExpr.cpp
@@ -3878,6 +3878,8 @@ ExprResult Sema::ActOnNumericConstant(const Token &Tok,
Scope *UDLScope) {
Ty = !getLangOpts().HLSL ? Context.LongDoubleTy : Context.DoubleTy;
else if (Literal.isFloat16)
Ty = Context.Float16Ty;
+ else if (Literal.isBFloat16)
+ Ty = Context.BFloat16Ty;
else if (Literal.isFloat128)
Ty = Context.Float128Ty;
else if (getLangOpts().HLSL)
>From d55e0ca50eb50ec4a2fdb0e7ba9e3c11be70065d Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Thu, 3 Apr 2025 10:09:22 +0200
Subject: [PATCH 02/17] add `__bf16` macros
---
clang/lib/Frontend/InitPreprocessor.cpp | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp
b/clang/lib/Frontend/InitPreprocessor.cpp
index 0b54665501c76..9bca74a8b4bd6 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -96,7 +96,7 @@ static void AddImplicitIncludePCH(MacroBuilder &Builder,
Preprocessor &PP,
template <typename T>
static T PickFP(const llvm::fltSemantics *Sem, T IEEEHalfVal, T IEEESingleVal,
T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
- T IEEEQuadVal) {
+ T BFloatVal, T IEEEQuadVal) {
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEhalf())
return IEEEHalfVal;
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle())
@@ -107,6 +107,8 @@ static T PickFP(const llvm::fltSemantics *Sem, T
IEEEHalfVal, T IEEESingleVal,
return X87DoubleExtendedVal;
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble())
return PPCDoubleDoubleVal;
+ if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::BFloat())
+ return BFloatVal;
assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad());
return IEEEQuadVal;
}
@@ -117,29 +119,34 @@ static void DefineFloatMacros(MacroBuilder &Builder,
StringRef Prefix,
NormMax = PickFP(Sem, "6.5504e+4", "3.40282347e+38",
"1.7976931348623157e+308", "1.18973149535723176502e+4932",
"8.98846567431157953864652595394501e+307",
+ "3.38953138925153547590470800371487867e+38",
"1.18973149535723176508575932662800702e+4932");
DenormMin = PickFP(Sem, "5.9604644775390625e-8", "1.40129846e-45",
"4.9406564584124654e-324", "3.64519953188247460253e-4951",
"4.94065645841246544176568792868221e-324",
+ "9.18354961579912115600575419704879436e-41",
"6.47517511943802511092443895822764655e-4966");
- int Digits = PickFP(Sem, 3, 6, 15, 18, 31, 33);
- int DecimalDigits = PickFP(Sem, 5, 9, 17, 21, 33, 36);
+ int Digits = PickFP(Sem, 3, 6, 15, 18, 31, 2, 33);
+ int DecimalDigits = PickFP(Sem, 5, 9, 17, 21, 33, 4, 36);
Epsilon = PickFP(Sem, "9.765625e-4", "1.19209290e-7",
"2.2204460492503131e-16", "1.08420217248550443401e-19",
"4.94065645841246544176568792868221e-324",
+ "7.81250000000000000000000000000000000e-3",
"1.92592994438723585305597794258492732e-34");
- int MantissaDigits = PickFP(Sem, 11, 24, 53, 64, 106, 113);
- int Min10Exp = PickFP(Sem, -4, -37, -307, -4931, -291, -4931);
- int Max10Exp = PickFP(Sem, 4, 38, 308, 4932, 308, 4932);
- int MinExp = PickFP(Sem, -13, -125, -1021, -16381, -968, -16381);
- int MaxExp = PickFP(Sem, 16, 128, 1024, 16384, 1024, 16384);
+ int MantissaDigits = PickFP(Sem, 11, 24, 53, 64, 106, 8, 113);
+ int Min10Exp = PickFP(Sem, -4, -37, -307, -4931, -291, -37, -4931);
+ int Max10Exp = PickFP(Sem, 4, 38, 308, 4932, 308, 38, 4932);
+ int MinExp = PickFP(Sem, -13, -125, -1021, -16381, -968, -125, -16381);
+ int MaxExp = PickFP(Sem, 16, 128, 1024, 16384, 1024, 128, 16384);
Min = PickFP(Sem, "6.103515625e-5", "1.17549435e-38",
"2.2250738585072014e-308",
"3.36210314311209350626e-4932",
"2.00416836000897277799610805135016e-292",
+ "1.17549435082228750796873653722224568e-38",
"3.36210314311209350626267781732175260e-4932");
Max = PickFP(Sem, "6.5504e+4", "3.40282347e+38", "1.7976931348623157e+308",
"1.18973149535723176502e+4932",
"1.79769313486231580793728971405301e+308",
+ "3.38953138925153547590470800371487867e+38",
"1.18973149535723176508575932662800702e+4932");
SmallString<32> DefPrefix;
@@ -1250,6 +1257,8 @@ static void InitializePredefinedMacros(const TargetInfo
&TI,
if (TI.hasFloat16Type())
DefineFloatMacros(Builder, "FLT16", &TI.getHalfFormat(), "F16");
+ if (TI.hasBFloat16Type())
+ DefineFloatMacros(Builder, "BFLT16", &TI.getBFloat16Format(), "BF16");
DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
>From d0b9ecd3f3a5347eba484485705ed01a96bbf18e Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Thu, 3 Apr 2025 10:17:59 +0200
Subject: [PATCH 03/17] fix formatting
---
clang/lib/Frontend/InitPreprocessor.cpp | 6 +++---
clang/lib/Lex/LiteralSupport.cpp | 9 ++++++---
2 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp
b/clang/lib/Frontend/InitPreprocessor.cpp
index 9bca74a8b4bd6..8bb91a8654836 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -107,7 +107,7 @@ static T PickFP(const llvm::fltSemantics *Sem, T
IEEEHalfVal, T IEEESingleVal,
return X87DoubleExtendedVal;
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble())
return PPCDoubleDoubleVal;
- if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::BFloat())
+ if (Sem == (const llvm::fltSemantics *)&llvm::APFloat::BFloat())
return BFloatVal;
assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad());
return IEEEQuadVal;
@@ -138,8 +138,8 @@ static void DefineFloatMacros(MacroBuilder &Builder,
StringRef Prefix,
int Max10Exp = PickFP(Sem, 4, 38, 308, 4932, 308, 38, 4932);
int MinExp = PickFP(Sem, -13, -125, -1021, -16381, -968, -125, -16381);
int MaxExp = PickFP(Sem, 16, 128, 1024, 16384, 1024, 128, 16384);
- Min = PickFP(Sem, "6.103515625e-5", "1.17549435e-38",
"2.2250738585072014e-308",
- "3.36210314311209350626e-4932",
+ Min = PickFP(Sem, "6.103515625e-5", "1.17549435e-38",
+ "2.2250738585072014e-308", "3.36210314311209350626e-4932",
"2.00416836000897277799610805135016e-292",
"1.17549435082228750796873653722224568e-38",
"3.36210314311209350626267781732175260e-4932");
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index ab0d301a70fbd..bdfb7575b96cb 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -982,9 +982,12 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
switch (*s) {
case 'b':
case 'B':
- if (isBFloat16) break;
- if (isBF16) break;
- if (HasSize) break;
+ if (isBFloat16)
+ break;
+ if (isBF16)
+ break;
+ if (HasSize)
+ break;
isBF16 = true;
continue;
>From 94244f4a0945b9b20d4b6aad15ff9011549477b3 Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Thu, 3 Apr 2025 22:38:53 +0200
Subject: [PATCH 04/17] chore(style): fix redundant style
---
clang/lib/Frontend/InitPreprocessor.cpp | 3 +--
clang/lib/Lex/LiteralSupport.cpp | 5 ++---
2 files changed, 3 insertions(+), 5 deletions(-)
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp
b/clang/lib/Frontend/InitPreprocessor.cpp
index 8bb91a8654836..8d8c115297eab 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -130,8 +130,7 @@ static void DefineFloatMacros(MacroBuilder &Builder,
StringRef Prefix,
int DecimalDigits = PickFP(Sem, 5, 9, 17, 21, 33, 4, 36);
Epsilon = PickFP(Sem, "9.765625e-4", "1.19209290e-7",
"2.2204460492503131e-16", "1.08420217248550443401e-19",
- "4.94065645841246544176568792868221e-324",
- "7.81250000000000000000000000000000000e-3",
+ "4.94065645841246544176568792868221e-324", "7.8125e-3",
"1.92592994438723585305597794258492732e-34");
int MantissaDigits = PickFP(Sem, 11, 24, 53, 64, 106, 8, 113);
int Min10Exp = PickFP(Sem, -4, -37, -307, -4931, -291, -37, -4931);
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index bdfb7575b96cb..7620a1fc3cfd8 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -1035,11 +1035,10 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
(LangOpts.OpenMPIsTargetDevice && Target.getTriple().isNVPTX())) &&
s + 2 < ThisTokEnd && s[1] == '1' && s[2] == '6') {
s += 2; // success, eat up 2 characters.
- if (isBF16) {
+ if (isBF16)
isBFloat16 = true;
- } else {
+ else
isFloat16 = true;
- }
continue;
}
>From 5b2589826087b8ff3e483dd82af07cc2039c0c88 Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Thu, 3 Apr 2025 22:57:58 +0200
Subject: [PATCH 05/17] chore: reorder `PickFP` arguments
---
clang/lib/Frontend/InitPreprocessor.cpp | 48 +++++++++++++------------
1 file changed, 26 insertions(+), 22 deletions(-)
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp
b/clang/lib/Frontend/InitPreprocessor.cpp
index 8d8c115297eab..25199cb605558 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -94,11 +94,13 @@ static void AddImplicitIncludePCH(MacroBuilder &Builder,
Preprocessor &PP,
/// PickFP - This is used to pick a value based on the FP semantics of the
/// specified FP model.
template <typename T>
-static T PickFP(const llvm::fltSemantics *Sem, T IEEEHalfVal, T IEEESingleVal,
- T IEEEDoubleVal, T X87DoubleExtendedVal, T PPCDoubleDoubleVal,
- T BFloatVal, T IEEEQuadVal) {
+static T PickFP(const llvm::fltSemantics *Sem, T IEEEHalfVal, T BFloatVal,
+ T IEEESingleVal, T IEEEDoubleVal, T X87DoubleExtendedVal,
+ T PPCDoubleDoubleVal, T IEEEQuadVal) {
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEhalf())
return IEEEHalfVal;
+ if (Sem == (const llvm::fltSemantics *)&llvm::APFloat::BFloat())
+ return BFloatVal;
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEsingle())
return IEEESingleVal;
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEdouble())
@@ -107,8 +109,6 @@ static T PickFP(const llvm::fltSemantics *Sem, T
IEEEHalfVal, T IEEESingleVal,
return X87DoubleExtendedVal;
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::PPCDoubleDouble())
return PPCDoubleDoubleVal;
- if (Sem == (const llvm::fltSemantics *)&llvm::APFloat::BFloat())
- return BFloatVal;
assert(Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEquad());
return IEEEQuadVal;
}
@@ -116,36 +116,40 @@ static T PickFP(const llvm::fltSemantics *Sem, T
IEEEHalfVal, T IEEESingleVal,
static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
const llvm::fltSemantics *Sem, StringRef Ext) {
const char *DenormMin, *NormMax, *Epsilon, *Max, *Min;
- NormMax = PickFP(Sem, "6.5504e+4", "3.40282347e+38",
+ NormMax = PickFP(Sem, "6.5504e+4",
+ "3.38953138925153547590470800371487867e+38",
+ "3.40282347e+38",
"1.7976931348623157e+308", "1.18973149535723176502e+4932",
"8.98846567431157953864652595394501e+307",
- "3.38953138925153547590470800371487867e+38",
"1.18973149535723176508575932662800702e+4932");
- DenormMin = PickFP(Sem, "5.9604644775390625e-8", "1.40129846e-45",
+ DenormMin = PickFP(Sem, "5.9604644775390625e-8",
+ "9.18354961579912115600575419704879436e-41",
+ "1.40129846e-45",
"4.9406564584124654e-324", "3.64519953188247460253e-4951",
"4.94065645841246544176568792868221e-324",
- "9.18354961579912115600575419704879436e-41",
"6.47517511943802511092443895822764655e-4966");
- int Digits = PickFP(Sem, 3, 6, 15, 18, 31, 2, 33);
- int DecimalDigits = PickFP(Sem, 5, 9, 17, 21, 33, 4, 36);
- Epsilon = PickFP(Sem, "9.765625e-4", "1.19209290e-7",
+ int Digits = PickFP(Sem, 3, 2, 6, 15, 18, 31, 33);
+ int DecimalDigits = PickFP(Sem, 5, 4, 9, 17, 21, 33, 36);
+ Epsilon = PickFP(Sem, "9.765625e-4", "7.8125e-3", "1.19209290e-7",
"2.2204460492503131e-16", "1.08420217248550443401e-19",
- "4.94065645841246544176568792868221e-324", "7.8125e-3",
+ "4.94065645841246544176568792868221e-324",
"1.92592994438723585305597794258492732e-34");
- int MantissaDigits = PickFP(Sem, 11, 24, 53, 64, 106, 8, 113);
- int Min10Exp = PickFP(Sem, -4, -37, -307, -4931, -291, -37, -4931);
- int Max10Exp = PickFP(Sem, 4, 38, 308, 4932, 308, 38, 4932);
- int MinExp = PickFP(Sem, -13, -125, -1021, -16381, -968, -125, -16381);
- int MaxExp = PickFP(Sem, 16, 128, 1024, 16384, 1024, 128, 16384);
- Min = PickFP(Sem, "6.103515625e-5", "1.17549435e-38",
+ int MantissaDigits = PickFP(Sem, 11, 8, 24, 53, 64, 106, 113);
+ int Min10Exp = PickFP(Sem, -4, -37, -37, -307, -4931, -291, -4931);
+ int Max10Exp = PickFP(Sem, 4, 38, 38, 308, 4932, 308, 4932);
+ int MinExp = PickFP(Sem, -13, -125, -125, -1021, -16381, -968, -16381);
+ int MaxExp = PickFP(Sem, 16, 128, 128, 1024, 16384, 1024, 16384);
+ Min = PickFP(Sem, "6.103515625e-5",
+ "1.17549435082228750796873653722224568e-38",
+ "1.17549435e-38",
"2.2250738585072014e-308", "3.36210314311209350626e-4932",
"2.00416836000897277799610805135016e-292",
- "1.17549435082228750796873653722224568e-38",
"3.36210314311209350626267781732175260e-4932");
- Max = PickFP(Sem, "6.5504e+4", "3.40282347e+38", "1.7976931348623157e+308",
+ Max = PickFP(Sem, "6.5504e+4",
+ "3.38953138925153547590470800371487867e+38",
+ "3.40282347e+38", "1.7976931348623157e+308",
"1.18973149535723176502e+4932",
"1.79769313486231580793728971405301e+308",
- "3.38953138925153547590470800371487867e+38",
"1.18973149535723176508575932662800702e+4932");
SmallString<32> DefPrefix;
>From 2c62638f56cfc1dd629797025382ee2fdc77eabc Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Thu, 3 Apr 2025 23:32:16 +0200
Subject: [PATCH 06/17] fix(bf suffix): fix float literal suffix support
---
clang/lib/Lex/LiteralSupport.cpp | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index 7620a1fc3cfd8..543fe26f486a4 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -974,7 +974,6 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
bool isFPConstant = isFloatingLiteral();
bool HasSize = false;
bool DoubleUnderscore = false;
- bool isBF16 = false;
// Loop over all of the characters of the suffix. If we see something bad,
// we break out of the loop.
@@ -982,15 +981,25 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
switch (*s) {
case 'b':
case 'B':
+ if (!isFPConstant) break; // Error for integer constant.
if (isBFloat16)
break;
- if (isBF16)
+ if (!Target.hasBFloat16Type())
break;
if (HasSize)
break;
+ HasSize = true;
- isBF16 = true;
- continue;
+ if ((Target.hasBFloat16Type() || LangOpts.CUDA ||
+ (LangOpts.OpenMPIsTargetDevice && Target.getTriple().isNVPTX())) &&
+ s + 2 < ThisTokEnd &&
+ ((s[0] == 'b' && s[1] == 'f') || (s[0] == 'B' && s[1] == 'F')) &&
+ s[2] == '1' && s[3] == '6') {
+ s += 3; // success, eat up 3 characters.
+ isBFloat16 = true;
+ continue;
+ }
+ break;
case 'R':
case 'r':
if (!LangOpts.FixedPoint)
@@ -1035,10 +1044,7 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
(LangOpts.OpenMPIsTargetDevice && Target.getTriple().isNVPTX())) &&
s + 2 < ThisTokEnd && s[1] == '1' && s[2] == '6') {
s += 2; // success, eat up 2 characters.
- if (isBF16)
- isBFloat16 = true;
- else
- isFloat16 = true;
+ isFloat16 = true;
continue;
}
>From 3abe5e751729d1f2863049036d9ec0fab8cacfb2 Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Fri, 4 Apr 2025 01:46:37 +0200
Subject: [PATCH 07/17] chore(docs): add release notes for the macros and
bfloat literal suffix
---
clang/docs/ReleaseNotes.rst | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 04ec2cfef679c..da04e34d8eeca 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -459,6 +459,26 @@ DWARF Support in Clang
Floating Point Support in Clang
-------------------------------
+- Added 15 ``__BFLT16_`` macros to indicate support of ``__bf16`` type. The
new macros are:
+
+ + ``__BFLT16_DECIMAL_DIG__``
+ + ``__BFLT16_DENORM_MIN__``
+ + ``__BFLT16_DIG__``
+ + ``__BFLT16_EPSILON__``
+ + ``__BFLT16_HAS_DENORM__``
+ + ``__BFLT16_HAS_INFINITY__``
+ + ``__BFLT16_HAS_QUIET_NAN__``
+ + ``__BFLT16_MANT_DIG__``
+ + ``__BFLT16_MAX_10_EXP__``
+ + ``__BFLT16_MAX_EXP__``
+ + ``__BFLT16_MAX__``
+ + ``__BFLT16_MIN_10_EXP__``
+ + ``__BFLT16_MIN_EXP__``
+ + ``__BFLT16_MIN__``
+ + ``__BFLT16_NORM_MAX__``
+
+- Added brain float literal suffix (``1.0bf16`` and ``1.0BF16``).
+
Fixed Point Support in Clang
----------------------------
>From 9e48a497812bc3d825ed0371cd54711bf6c4728f Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Fri, 4 Apr 2025 02:18:36 +0200
Subject: [PATCH 08/17] chore(test): add test for bfloat literal suffix support
---
clang/test/Lexer/bfloat-literal.cpp | 13 +++++++++++++
1 file changed, 13 insertions(+)
create mode 100644 clang/test/Lexer/bfloat-literal.cpp
diff --git a/clang/test/Lexer/bfloat-literal.cpp
b/clang/test/Lexer/bfloat-literal.cpp
new file mode 100644
index 0000000000000..f37b055e2a96b
--- /dev/null
+++ b/clang/test/Lexer/bfloat-literal.cpp
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
+__bf16 a = 1.b; // expected-error{{invalid suffix 'b' on floating constant}}
+__bf16 b = 1.bf; // expected-error{{invalid suffix 'bf' on floating constant}}
+__bf16 c = 1.bf166; // expected-error{{invalid suffix 'bf166' on floating
constant}}
+__bf16 d = 1.bf1; // expected-error{{invalid suffix 'bf1' on floating
constant}}
+
+__bf16 e = 1.B; // expected-error{{invalid suffix 'B' on floating constant}}
+__bf16 f = 1.BF; // expected-error{{invalid suffix 'BF' on floating constant}}
+__bf16 g = 1.BF166; // expected-error{{invalid suffix 'BF166' on floating
constant}}
+__bf16 h = 1.BF1; // expected-error{{invalid suffix 'BF1' on floating
constant}}
+
+__bf16 i = 1.bf16; // expect-success
+__bf16 j = 1.BF16; // expect-success
>From 2680e738d0a13cf2bd2083f006ffac63747a69c7 Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Fri, 4 Apr 2025 04:54:39 +0200
Subject: [PATCH 09/17] chore(test): add test for `__bf16`/`BFLT16` predefined
macros
---
clang/test/Preprocessor/bfloat16-macros.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
create mode 100644 clang/test/Preprocessor/bfloat16-macros.c
diff --git a/clang/test/Preprocessor/bfloat16-macros.c
b/clang/test/Preprocessor/bfloat16-macros.c
new file mode 100644
index 0000000000000..9604275b78d33
--- /dev/null
+++ b/clang/test/Preprocessor/bfloat16-macros.c
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 -E -dM -ffreestanding < /dev/null | FileCheck
-match-full-lines -check-prefix BFLT16 %s
+
+// BFLT16: #define __BFLT16_DECIMAL_DIG__ 4
+// BFLT16: #define __BFLT16_DENORM_MIN__
9.18354961579912115600575419704879436e-41BF16
+// BFLT16: #define __BFLT16_DIG__ 2
+// BFLT16: #define __BFLT16_EPSILON__ 7.8125e-3BF16
+// BFLT16: #define __BFLT16_HAS_DENORM__ 1
+// BFLT16: #define __BFLT16_HAS_INFINITY__ 1
+// BFLT16: #define __BFLT16_HAS_QUIET_NAN__ 1
+// BFLT16: #define __BFLT16_MANT_DIG__ 8
+// BFLT16: #define __BFLT16_MAX_10_EXP__ 38
+// BFLT16: #define __BFLT16_MAX_EXP__ 128
+// BFLT16: #define __BFLT16_MAX__ 3.38953138925153547590470800371487867e+38BF16
+// BFLT16: #define __BFLT16_MIN_10_EXP__ (-37)
+// BFLT16: #define __BFLT16_MIN_EXP__ (-125)
+// BFLT16: #define __BFLT16_MIN__ 1.17549435082228750796873653722224568e-38BF16
+// BFLT16: #define __BFLT16_NORM_MAX__
3.38953138925153547590470800371487867e+38BF16
>From 3b793b2ceaf0ae8e147158d04120292eafece874 Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Fri, 4 Apr 2025 10:18:59 +0200
Subject: [PATCH 10/17] fix(TargetInfo): save state of the type format after
copy
---
clang/lib/Basic/Targets/AMDGPU.cpp | 2 ++
1 file changed, 2 insertions(+)
diff --git a/clang/lib/Basic/Targets/AMDGPU.cpp
b/clang/lib/Basic/Targets/AMDGPU.cpp
index a42b4589fb5ac..5b2982ecf47aa 100644
--- a/clang/lib/Basic/Targets/AMDGPU.cpp
+++ b/clang/lib/Basic/Targets/AMDGPU.cpp
@@ -365,11 +365,13 @@ void AMDGPUTargetInfo::setAuxTarget(const TargetInfo
*Aux) {
// not supported by AMDGPU. 128-bit floating point format is also not
// supported by AMDGPU. Therefore keep its own format for these two types.
auto SaveLongDoubleFormat = LongDoubleFormat;
+ auto SaveBFloat16Format = BFloat16Format;
auto SaveFloat128Format = Float128Format;
auto SaveLongDoubleWidth = LongDoubleWidth;
auto SaveLongDoubleAlign = LongDoubleAlign;
copyAuxTarget(Aux);
LongDoubleFormat = SaveLongDoubleFormat;
+ BFloat16Format = SaveBFloat16Format;
Float128Format = SaveFloat128Format;
LongDoubleWidth = SaveLongDoubleWidth;
LongDoubleAlign = SaveLongDoubleAlign;
>From ae0cf842f3a8bd06bb174b12f21dbc1dc0af223c Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Fri, 4 Apr 2025 10:26:05 +0200
Subject: [PATCH 11/17] chore(style): fix code style
---
clang/lib/Frontend/InitPreprocessor.cpp | 32 +++++++++++--------------
clang/lib/Lex/LiteralSupport.cpp | 3 ++-
2 files changed, 16 insertions(+), 19 deletions(-)
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp
b/clang/lib/Frontend/InitPreprocessor.cpp
index 25199cb605558..1a4885dd17ca0 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -95,8 +95,8 @@ static void AddImplicitIncludePCH(MacroBuilder &Builder,
Preprocessor &PP,
/// specified FP model.
template <typename T>
static T PickFP(const llvm::fltSemantics *Sem, T IEEEHalfVal, T BFloatVal,
- T IEEESingleVal, T IEEEDoubleVal, T X87DoubleExtendedVal,
- T PPCDoubleDoubleVal, T IEEEQuadVal) {
+ T IEEESingleVal, T IEEEDoubleVal, T X87DoubleExtendedVal,
+ T PPCDoubleDoubleVal, T IEEEQuadVal) {
if (Sem == (const llvm::fltSemantics*)&llvm::APFloat::IEEEhalf())
return IEEEHalfVal;
if (Sem == (const llvm::fltSemantics *)&llvm::APFloat::BFloat())
@@ -116,18 +116,16 @@ static T PickFP(const llvm::fltSemantics *Sem, T
IEEEHalfVal, T BFloatVal,
static void DefineFloatMacros(MacroBuilder &Builder, StringRef Prefix,
const llvm::fltSemantics *Sem, StringRef Ext) {
const char *DenormMin, *NormMax, *Epsilon, *Max, *Min;
- NormMax = PickFP(Sem, "6.5504e+4",
- "3.38953138925153547590470800371487867e+38",
- "3.40282347e+38",
- "1.7976931348623157e+308", "1.18973149535723176502e+4932",
- "8.98846567431157953864652595394501e+307",
- "1.18973149535723176508575932662800702e+4932");
- DenormMin = PickFP(Sem, "5.9604644775390625e-8",
- "9.18354961579912115600575419704879436e-41",
- "1.40129846e-45",
- "4.9406564584124654e-324", "3.64519953188247460253e-4951",
- "4.94065645841246544176568792868221e-324",
- "6.47517511943802511092443895822764655e-4966");
+ NormMax = PickFP(
+ Sem, "6.5504e+4", "3.38953138925153547590470800371487867e+38",
+ "3.40282347e+38", "1.7976931348623157e+308",
+ "1.18973149535723176502e+4932",
"8.98846567431157953864652595394501e+307",
+ "1.18973149535723176508575932662800702e+4932");
+ DenormMin = PickFP(
+ Sem, "5.9604644775390625e-8",
"9.18354961579912115600575419704879436e-41",
+ "1.40129846e-45", "4.9406564584124654e-324",
+ "3.64519953188247460253e-4951",
"4.94065645841246544176568792868221e-324",
+ "6.47517511943802511092443895822764655e-4966");
int Digits = PickFP(Sem, 3, 2, 6, 15, 18, 31, 33);
int DecimalDigits = PickFP(Sem, 5, 4, 9, 17, 21, 33, 36);
Epsilon = PickFP(Sem, "9.765625e-4", "7.8125e-3", "1.19209290e-7",
@@ -140,13 +138,11 @@ static void DefineFloatMacros(MacroBuilder &Builder,
StringRef Prefix,
int MinExp = PickFP(Sem, -13, -125, -125, -1021, -16381, -968, -16381);
int MaxExp = PickFP(Sem, 16, 128, 128, 1024, 16384, 1024, 16384);
Min = PickFP(Sem, "6.103515625e-5",
- "1.17549435082228750796873653722224568e-38",
- "1.17549435e-38",
+ "1.17549435082228750796873653722224568e-38", "1.17549435e-38",
"2.2250738585072014e-308", "3.36210314311209350626e-4932",
"2.00416836000897277799610805135016e-292",
"3.36210314311209350626267781732175260e-4932");
- Max = PickFP(Sem, "6.5504e+4",
- "3.38953138925153547590470800371487867e+38",
+ Max = PickFP(Sem, "6.5504e+4", "3.38953138925153547590470800371487867e+38",
"3.40282347e+38", "1.7976931348623157e+308",
"1.18973149535723176502e+4932",
"1.79769313486231580793728971405301e+308",
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index 543fe26f486a4..a12d7442b33e7 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -981,7 +981,8 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
switch (*s) {
case 'b':
case 'B':
- if (!isFPConstant) break; // Error for integer constant.
+ if (!isFPConstant)
+ break; // Error for integer constant.
if (isBFloat16)
break;
if (!Target.hasBFloat16Type())
>From 621d5a323646b2840b08de80a054f70b7da2c209 Mon Sep 17 00:00:00 2001
From: Muhammad Bassiouni <60100307+bassiou...@users.noreply.github.com>
Date: Fri, 4 Apr 2025 11:09:56 +0200
Subject: [PATCH 12/17] Update clang/lib/Lex/LiteralSupport.cpp
Co-authored-by: OverMighty <its.overmig...@gmail.com>
---
clang/lib/Lex/LiteralSupport.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index a12d7442b33e7..9ade1e21a11bd 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -993,7 +993,7 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
if ((Target.hasBFloat16Type() || LangOpts.CUDA ||
(LangOpts.OpenMPIsTargetDevice && Target.getTriple().isNVPTX())) &&
- s + 2 < ThisTokEnd &&
+ s + 3 < ThisTokEnd &&
((s[0] == 'b' && s[1] == 'f') || (s[0] == 'B' && s[1] == 'F')) &&
s[2] == '1' && s[3] == '6') {
s += 3; // success, eat up 3 characters.
>From f6a05c3b544e3d9b3dcdea70fd2432a0da08cde2 Mon Sep 17 00:00:00 2001
From: Muhammad Bassiouni <60100307+bassiou...@users.noreply.github.com>
Date: Fri, 4 Apr 2025 11:10:14 +0200
Subject: [PATCH 13/17] Update clang/lib/Lex/LiteralSupport.cpp
Co-authored-by: OverMighty <its.overmig...@gmail.com>
---
clang/lib/Lex/LiteralSupport.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index 9ade1e21a11bd..9d41494fe18ac 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -979,7 +979,7 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
// we break out of the loop.
for (; s != ThisTokEnd; ++s) {
switch (*s) {
- case 'b':
+ case 'b': // FP Suffix for "__bf16"
case 'B':
if (!isFPConstant)
break; // Error for integer constant.
>From c272219e2934e20d309901c06fb1a54edbf40da4 Mon Sep 17 00:00:00 2001
From: Muhammad Bassiouni <60100307+bassiou...@users.noreply.github.com>
Date: Fri, 4 Apr 2025 11:12:30 +0200
Subject: [PATCH 14/17] Update clang/lib/Lex/LiteralSupport.cpp
Co-authored-by: OverMighty <its.overmig...@gmail.com>
---
clang/lib/Lex/LiteralSupport.cpp | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index 9d41494fe18ac..e17e1fde36203 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -981,12 +981,10 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
switch (*s) {
case 'b': // FP Suffix for "__bf16"
case 'B':
- if (!isFPConstant)
- break; // Error for integer constant.
- if (isBFloat16)
- break;
if (!Target.hasBFloat16Type())
break;
+ if (!isFPConstant)
+ break; // Error for integer constant.
if (HasSize)
break;
HasSize = true;
>From 33d9adbfdedfe13ac302e5fd26520281954117cf Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Fri, 4 Apr 2025 11:18:17 +0200
Subject: [PATCH 15/17] remove reduntant checks
---
clang/lib/Lex/LiteralSupport.cpp | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index e17e1fde36203..a9822f646da23 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -989,9 +989,7 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
break;
HasSize = true;
- if ((Target.hasBFloat16Type() || LangOpts.CUDA ||
- (LangOpts.OpenMPIsTargetDevice && Target.getTriple().isNVPTX())) &&
- s + 3 < ThisTokEnd &&
+ if ((Target.hasBFloat16Type()) && s + 3 < ThisTokEnd &&
((s[0] == 'b' && s[1] == 'f') || (s[0] == 'B' && s[1] == 'F')) &&
s[2] == '1' && s[3] == '6') {
s += 3; // success, eat up 3 characters.
>From 3cc63e96810707ec6778b889f29afde9ac36e9f2 Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Fri, 4 Apr 2025 11:36:16 +0200
Subject: [PATCH 16/17] add more bf16 literal suffix tests
---
clang/test/Lexer/bfloat-literal.cpp | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/clang/test/Lexer/bfloat-literal.cpp
b/clang/test/Lexer/bfloat-literal.cpp
index f37b055e2a96b..5585b906c5461 100644
--- a/clang/test/Lexer/bfloat-literal.cpp
+++ b/clang/test/Lexer/bfloat-literal.cpp
@@ -11,3 +11,20 @@ __bf16 h = 1.BF1; // expected-error{{invalid suffix 'BF1' on
floating constant}}
__bf16 i = 1.bf16; // expect-success
__bf16 j = 1.BF16; // expect-success
+
+__bf16 k = 1B; // expected-error{{invalid digit 'B' in decimal constant}}
+__bf16 l = 1BF; // expected-error{{invalid digit 'B' in decimal constant}}
+__bf16 m = 1BF166; // expected-error{{invalid digit 'B' in decimal constant}}
+__bf16 n = 1BF1; // expected-error{{invalid digit 'B' in decimal constant}}
+
+__bf16 o = 1b; // expected-error{{invalid digit 'b' in decimal constant}}
+__bf16 p = 1bf; // expected-error{{invalid digit 'b' in decimal constant}}
+__bf16 q = 1bf166; // expected-error{{invalid digit 'b' in decimal constant}}
+__bf16 r = 1bf1; // expected-error{{invalid digit 'b' in decimal constant}}
+
+__bf16 s = 1bf16; // expected-error{{invalid digit 'b' in decimal constant}}
+__bf16 t = 1BF16; // expected-error{{invalid digit 'B' in decimal constant}}
+
+__bf16 u = 1.bf16F16; // expected-error{{invalid suffix 'bf16F16' on floating
constant}}
+__bf16 v = 1.BF16f16; // expected-error{{invalid suffix 'BF16f16' on floating
constant}}
+__bf16 w = 1.F16bf16; // expected-error{{invalid suffix 'F16bf16' on floating
constant}}
>From e88f537398f1167080d4b45bb6b0d5539c0d78bb Mon Sep 17 00:00:00 2001
From: bassiounix <muhammad.m.bassio...@gmail.com>
Date: Fri, 4 Apr 2025 11:46:51 +0200
Subject: [PATCH 17/17] remove redundant check
---
clang/lib/Lex/LiteralSupport.cpp | 2 +-
clang/test/Lexer/bfloat-literal.cpp | 43 ++++++++++++++++++++++++++++-
2 files changed, 43 insertions(+), 2 deletions(-)
diff --git a/clang/lib/Lex/LiteralSupport.cpp b/clang/lib/Lex/LiteralSupport.cpp
index a9822f646da23..d4d9c0755b4bc 100644
--- a/clang/lib/Lex/LiteralSupport.cpp
+++ b/clang/lib/Lex/LiteralSupport.cpp
@@ -989,7 +989,7 @@ NumericLiteralParser::NumericLiteralParser(StringRef
TokSpelling,
break;
HasSize = true;
- if ((Target.hasBFloat16Type()) && s + 3 < ThisTokEnd &&
+ if (s + 3 < ThisTokEnd &&
((s[0] == 'b' && s[1] == 'f') || (s[0] == 'B' && s[1] == 'F')) &&
s[2] == '1' && s[3] == '6') {
s += 3; // success, eat up 3 characters.
diff --git a/clang/test/Lexer/bfloat-literal.cpp
b/clang/test/Lexer/bfloat-literal.cpp
index 5585b906c5461..41a9dedbef382 100644
--- a/clang/test/Lexer/bfloat-literal.cpp
+++ b/clang/test/Lexer/bfloat-literal.cpp
@@ -1,4 +1,9 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -pedantic %s
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic -triple x86_64 -DSUPPORTED
%s
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic -triple armv7 %s
+// RUN: %clang_cc1 -fsyntax-only -verify -pedantic -triple armv7
-target-feature +bf16 -DSUPPORTED %s
+
+#ifdef SUPPORTED
+
__bf16 a = 1.b; // expected-error{{invalid suffix 'b' on floating constant}}
__bf16 b = 1.bf; // expected-error{{invalid suffix 'bf' on floating constant}}
__bf16 c = 1.bf166; // expected-error{{invalid suffix 'bf166' on floating
constant}}
@@ -28,3 +33,39 @@ __bf16 t = 1BF16; // expected-error{{invalid digit 'B' in
decimal constant}}
__bf16 u = 1.bf16F16; // expected-error{{invalid suffix 'bf16F16' on floating
constant}}
__bf16 v = 1.BF16f16; // expected-error{{invalid suffix 'BF16f16' on floating
constant}}
__bf16 w = 1.F16bf16; // expected-error{{invalid suffix 'F16bf16' on floating
constant}}
+
+#endif
+
+#ifndef SUPPORTED
+
+__bf16 a = 1.b; // expected-error{{__bf16 is not supported on this target}}
+__bf16 b = 1.bf; // expected-error{{__bf16 is not supported on this target}}
+__bf16 c = 1.bf166; // expected-error{{__bf16 is not supported on this target}}
+__bf16 d = 1.bf1; // expected-error{{__bf16 is not supported on this target}}
+
+__bf16 e = 1.B; // expected-error{{__bf16 is not supported on this target}}
+__bf16 f = 1.BF; // expected-error{{__bf16 is not supported on this target}}
+__bf16 g = 1.BF166; // expected-error{{__bf16 is not supported on this target}}
+__bf16 h = 1.BF1; // expected-error{{__bf16 is not supported on this target}}
+
+__bf16 i = 1.bf16; // expect-success
+__bf16 j = 1.BF16; // expect-success
+
+__bf16 k = 1B; // expected-error{{invalid digit 'B' in decimal constant}}
+__bf16 l = 1BF; // expected-error{{invalid digit 'B' in decimal constant}}
+__bf16 m = 1BF166; // expected-error{{invalid digit 'B' in decimal constant}}
+__bf16 n = 1BF1; // expected-error{{invalid digit 'B' in decimal constant}}
+
+__bf16 o = 1b; // expected-error{{invalid digit 'b' in decimal constant}}
+__bf16 p = 1bf; // expected-error{{invalid digit 'b' in decimal constant}}
+__bf16 q = 1bf166; // expected-error{{invalid digit 'b' in decimal constant}}
+__bf16 r = 1bf1; // expected-error{{invalid digit 'b' in decimal constant}}
+
+__bf16 s = 1bf16; // expected-error{{invalid digit 'b' in decimal constant}}
+__bf16 t = 1BF16; // expected-error{{invalid digit 'B' in decimal constant}}
+
+__bf16 u = 1.bf16F16; // expected-error{{invalid suffix 'bf16F16' on floating
constant}}
+__bf16 v = 1.BF16f16; // expected-error{{invalid suffix 'BF16f16' on floating
constant}}
+__bf16 w = 1.F16bf16; // expected-error{{invalid suffix 'F16bf16' on floating
constant}}
+
+#endif
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