[PATCH] D145648: [clang][Driver] recognize `-ffp-contract=fast-honor-pragmas`

[Yaxun Liu via Phabricator via cfe-commits]

yaxunl created this revision.
yaxunl added a reviewer: tra.
Herald added a project: All.
yaxunl requested review of this revision.
Herald added a subscriber: MaskRay.

`-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


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