[clang] e94c171 - [clang][Driver] recognize `-ffp-contract=fast-honor-pragmas`

[Yaxun Liu via cfe-commits]

Author: Yaxun (Sam) Liu
Date: 2023-08-24T19:50:10-04:00
New Revision: e94c171ddb036e9672681d74725069352dd04d0e

URL: https://github.com/llvm/llvm-project/commit/e94c171ddb036e9672681d74725069352dd04d0e
DIFF: https://github.com/llvm/llvm-project/commit/e94c171ddb036e9672681d74725069352dd04d0e.diff

LOG: [clang][Driver] recognize `-ffp-contract=fast-honor-pragmas`

-ffp-contract=fast-honor-pragmas is a valid option recognized
by clang -cc1 but it is missed by clang driver.

Reviewed by: Matt Arsenault

Differential Revision: https://reviews.llvm.org/D145648

Added: 
    

Modified: 
    clang/lib/Driver/ToolChains/Clang.cpp
    clang/test/Driver/fp-contract.c

Removed: 
    


################################################################################
diff  --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index aaff62e5661a95..488838b1ff4bb7 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -2955,7 +2955,8 @@ static void RenderFloatingPointOptions(const ToolChain &TC, const Driver &D,
         // -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

diff  --git a/clang/test/Driver/fp-contract.c b/clang/test/Driver/fp-contract.c
index e89c57d6fd68f4..660f67fad3ccbe 100644
--- a/clang/test/Driver/fp-contract.c
+++ b/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 \