dschuff created this revision.
dschuff added a reviewer: azakai.
Herald added subscribers: sunfish, hiraditya, jgravelle-google, sbc100.
dschuff requested review of this revision.
Herald added subscribers: cfe-commits, aheejin.
Herald added projects: clang, LLVM.
This fix goes along with d1a96e906cc03a95cfd41a1f22bdda92651250c7
<https://reviews.llvm.org/rGd1a96e906cc03a95cfd41a1f22bdda92651250c7>
and makes the fp128 alignment match clang's long double alignment.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D105749
Files:
clang/lib/Basic/Targets/WebAssembly.h
llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
llvm/test/CodeGen/WebAssembly/varargs.ll
Index: llvm/test/CodeGen/WebAssembly/varargs.ll
===================================================================
--- llvm/test/CodeGen/WebAssembly/varargs.ll
+++ llvm/test/CodeGen/WebAssembly/varargs.ll
@@ -2,8 +2,7 @@
; Test varargs constructs.
-target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
-target triple = "wasm32-unknown-unknown"
+target triple = "wasm32-unknown-emscripten"
; Test va_start.
@@ -167,21 +166,19 @@
; within a vararg buffer.
; CHECK-LABEL: call_fp128_alignment:
-; CHECK: global.get $push7=, __stack_pointer
-; CHECK-NEXT: i32.const $push8=, 32
-; CHECK-NEXT: i32.sub $push12=, $pop7, $pop8
-; CHECK-NEXT: local.tee $push11=, $1=, $pop12
-; CHECK-NEXT: global.set __stack_pointer, $pop11
-; CHECK-NEXT: i32.const $push0=, 24
+; CHECK: global.get $push5=, __stack_pointer
+; CHECK-NEXT: i32.const $push6=, 32
+; CHECK-NEXT: i32.sub $push10=, $pop5, $pop6
+; CHECK-NEXT: local.tee $push9=, $1=, $pop10
+; CHECK-NEXT: global.set __stack_pointer, $pop9
+; CHECK-NEXT: i32.const $push0=, 16
; CHECK-NEXT: i32.add $push1=, $1, $pop0
; CHECK-NEXT: i64.const $push2=, -9223372036854775808
; CHECK-NEXT: i64.store 0($pop1), $pop2
-; CHECK-NEXT: i32.const $push3=, 16
-; CHECK-NEXT: i32.add $push4=, $1, $pop3
-; CHECK-NEXT: i64.const $push5=, 1
-; CHECK-NEXT: i64.store 0($pop4), $pop5
-; CHECK-NEXT: i32.const $push6=, 7
-; CHECK-NEXT: i32.store 0($1), $pop6
+; CHECK-NEXT: i64.const $push3=, 1
+; CHECK-NEXT: i64.store 8($1), $pop3
+; CHECK-NEXT: i32.const $push4=, 7
+; CHECK-NEXT: i32.store 0($1), $pop4
; CHECK-NEXT: call callee, $1
define void @call_fp128_alignment(i8* %p) {
entry:
Index: llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
===================================================================
--- llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
+++ llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp
@@ -120,12 +120,17 @@
const Target &T, const Triple &TT, StringRef CPU, StringRef FS,
const TargetOptions &Options, Optional<Reloc::Model> RM,
Optional<CodeModel::Model> CM, CodeGenOpt::Level OL, bool JIT)
- : LLVMTargetMachine(T,
- TT.isArch64Bit()
- ? "e-m:e-p:64:64-i64:64-n32:64-S128-ni:1"
- : "e-m:e-p:32:32-i64:64-n32:64-S128-ni:1",
- TT, CPU, FS, Options, getEffectiveRelocModel(RM, TT),
- getEffectiveCodeModel(CM, CodeModel::Large), OL),
+ : LLVMTargetMachine(
+ T,
+ TT.isArch64Bit()
+ ? (TT.isOSEmscripten()
+ ? "e-m:e-p:64:64-i64:64-f128:64-n32:64-S128-ni:1"
+ : "e-m:e-p:64:64-i64:64-n32:64-S128-ni:1")
+ : (TT.isOSEmscripten()
+ ? "e-m:e-p:32:32-i64:64-f128:64-n32:64-S128-ni:1"
+ : "e-m:e-p:32:32-i64:64-n32:64-S128-ni:1"),
+ TT, CPU, FS, Options, getEffectiveRelocModel(RM, TT),
+ getEffectiveCodeModel(CM, CodeModel::Large), OL),
TLOF(new WebAssemblyTargetObjectFile()) {
// WebAssembly type-checks instructions, but a noreturn function with a return
// type that doesn't match the context will cause a check failure. So we lower
Index: clang/lib/Basic/Targets/WebAssembly.h
===================================================================
--- clang/lib/Basic/Targets/WebAssembly.h
+++ clang/lib/Basic/Targets/WebAssembly.h
@@ -149,7 +149,10 @@
explicit WebAssembly32TargetInfo(const llvm::Triple &T,
const TargetOptions &Opts)
: WebAssemblyTargetInfo(T, Opts) {
- resetDataLayout("e-m:e-p:32:32-i64:64-n32:64-S128-ni:1");
+ if (T.isOSEmscripten())
+ resetDataLayout("e-m:e-p:32:32-i64:64-f128:64-n32:64-S128-ni:1");
+ else
+ resetDataLayout("e-m:e-p:32:32-i64:64-n32:64-S128-ni:1");
}
protected:
@@ -168,7 +171,10 @@
SizeType = UnsignedLong;
PtrDiffType = SignedLong;
IntPtrType = SignedLong;
- resetDataLayout("e-m:e-p:64:64-i64:64-n32:64-S128-ni:1");
+ if (T.isOSEmscripten())
+ resetDataLayout("e-m:e-p:32:32-i64:64-f128:64-n32:64-S128-ni:1");
+ else
+ resetDataLayout("e-m:e-p:64:64-i64:64-n32:64-S128-ni:1");
}
protected:
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