From: Akira Hatanaka <ahatanaka@apple.com>
Date: Fri, 26 Feb 2016 05:07:00 +0000 (+0000)
Subject: [Driver] Disable frame pointer elimination by default if target is
X-Git-Tag: llvmorg-3.9.0-rc1~13161
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8f5866a7a8088b1dede1d03c7a280b254d2ecaa1;p=platform%2Fupstream%2Fllvm.git

[Driver] Disable frame pointer elimination by default if target is
x86_64-pc-win32-macho.

rdar://problem/24470634

llvm-svn: 261976
---

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 0cb49af..d81b0ae 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -2955,6 +2955,8 @@ static bool shouldUseFramePointerForTarget(const ArgList &Args,
     switch (Triple.getArch()) {
     case llvm::Triple::x86:
       return !areOptimizationsEnabled(Args);
+    case llvm::Triple::x86_64:
+      return Triple.isOSBinFormatMachO();
     case llvm::Triple::arm:
     case llvm::Triple::thumb:
       // Windows on ARM builds with FPO disabled to aid fast stack walking
diff --git a/clang/test/Driver/frame-pointer.c b/clang/test/Driver/frame-pointer.c
index 1d63f2c..cec1686 100644
--- a/clang/test/Driver/frame-pointer.c
+++ b/clang/test/Driver/frame-pointer.c
@@ -10,6 +10,7 @@
 // RUN: %clang -target x86_64-pc-linux -### -S -O2 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK2-64 %s
 // RUN: %clang -target x86_64-pc-linux -### -S -O3 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK3-64 %s
 // RUN: %clang -target x86_64-pc-linux -### -S -Os %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECKs-64 %s
+// RUN: %clang -target x86_64-pc-win32-macho -### -S -O3 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK-MACHO-64 %s
 
 // Trust the above to get the optimizations right, and just test other targets
 // that want this by default.
@@ -36,3 +37,4 @@
 // CHECK2-64-NOT: -mdisable-fp-elim
 // CHECK3-64-NOT: -mdisable-fp-elim
 // CHECKs-64-NOT: -mdisable-fp-elim
+// CHECK-MACHO-64: -mdisable-fp-elim