Author: brad
Date: Thu Apr 11 18:29:18 2019
New Revision: 358245
URL: http://llvm.org/viewvc/llvm-project?rev=358245&view=rev
Log:
Enable frame pointer elimination for OpenBSD on x86 and mips64.
Modified:
cfe/trunk/lib/Driver/ToolChains/Clang.cpp
cfe/trunk/test/Driver/frame-pointer-elim.c
Modified: cfe/trunk/lib/Driver/ToolChains/Clang.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Clang.cpp?rev=358245&r1=358244&r2=358245&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/Clang.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains/Clang.cpp Thu Apr 11 18:29:18 2019
@@ -534,6 +534,18 @@ static bool useFramePointerForTargetByDe
return !areOptimizationsEnabled(Args);
}
+ if (Triple.isOSOpenBSD()) {
+ switch (Triple.getArch()) {
+ case llvm::Triple::mips64:
+ case llvm::Triple::mips64el:
+ case llvm::Triple::x86:
+ case llvm::Triple::x86_64:
+ return !areOptimizationsEnabled(Args);
+ default:
+ return true;
+ }
+ }
+
if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI ||
Triple.isOSHurd()) {
switch (Triple.getArch()) {
Modified: cfe/trunk/test/Driver/frame-pointer-elim.c
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/frame-pointer-elim.c?rev=358245&r1=358244&r2=358245&view=diff
==============================================================================
--- cfe/trunk/test/Driver/frame-pointer-elim.c (original)
+++ cfe/trunk/test/Driver/frame-pointer-elim.c Thu Apr 11 18:29:18 2019
@@ -26,6 +26,15 @@
// RUN: FileCheck --check-prefix=NETBSD %s
// NETBSD-NOT: "-momit-leaf-frame-pointer"
+// OpenBSD follows the same rules as Linux.
+// RUN: %clang -### -target x86_64-unknown-openbsd -S -O1 %s 2>&1 | \
+// RUN: FileCheck --check-prefix=OPENBSD-OPT %s
+// OPENBSD-OPT: "-momit-leaf-frame-pointer"
+
+// RUN: %clang -### -target x86_64-unknown-openbsd -S %s 2>&1 | \
+// RUN: FileCheck --check-prefix=OPENBSD %s
+// OPENBSD-NOT: "-momit-leaf-frame-pointer"
+
// Darwin disables omitting the leaf frame pointer even under optimization
// unless the command lines are given.
// RUN: %clang -### -target i386-apple-darwin -S %s 2>&1 | \
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