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`-ffp-contract=fast-honor-pragmas` is a valid option recognized
by clang -cc1 but it is missed by clang driver.
https://reviews.llvm.org/D145648
Files:
clang/lib/Driver/ToolChains/Clang.cpp
clang/test/Driver/fp-contract.c
Index: clang/test/Driver/fp-contract.c
===================================================================
--- clang/test/Driver/fp-contract.c
+++ clang/test/Driver/fp-contract.c
@@ -21,6 +21,10 @@
// RUN: %clang -### -ffast-math -ffp-contract=fast -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FPC-FAST %s
+// RUN: %clang -### -ffast-math -ffp-contract=fast-honor-pragmas -c %s 2>&1 \
+// RUN: | FileCheck --check-prefix=CHECK-FPC-FAST-HONOR %s
+// CHECK-FPC-FAST-HONOR: "-ffp-contract=fast-honor-pragmas"
+
// RUN: %clang -### -ffp-contract=fast -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FPC-FAST %s
// RUN: %clang -### -ffp-contract=on -ffast-math -c %s 2>&1 \
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -2899,7 +2899,8 @@
// -ffp-model=precise sets PreciseFPModel to on and Val to
// "precise". FPContract is set.
;
- } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off")) {
+ } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off") ||
+ Val.equals("fast-honor-pragmas")) {
FPContract = Val;
LastSeenFfpContractOption = Val;
} else
Index: clang/test/Driver/fp-contract.c
===================================================================
--- clang/test/Driver/fp-contract.c
+++ clang/test/Driver/fp-contract.c
@@ -21,6 +21,10 @@
// RUN: %clang -### -ffast-math -ffp-contract=fast -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FPC-FAST %s
+// RUN: %clang -### -ffast-math -ffp-contract=fast-honor-pragmas -c %s 2>&1 \
+// RUN: | FileCheck --check-prefix=CHECK-FPC-FAST-HONOR %s
+// CHECK-FPC-FAST-HONOR: "-ffp-contract=fast-honor-pragmas"
+
// RUN: %clang -### -ffp-contract=fast -ffast-math -c %s 2>&1 \
// RUN: | FileCheck --check-prefix=CHECK-FPC-FAST %s
// RUN: %clang -### -ffp-contract=on -ffast-math -c %s 2>&1 \
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -2899,7 +2899,8 @@
// -ffp-model=precise sets PreciseFPModel to on and Val to
// "precise". FPContract is set.
;
- } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off")) {
+ } else if (Val.equals("fast") || Val.equals("on") || Val.equals("off") ||
+ Val.equals("fast-honor-pragmas")) {
FPContract = Val;
LastSeenFfpContractOption = Val;
} else
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