From 0882cc1ad83d061bb2a27aec757a5cac6e50a38d Mon Sep 17 00:00:00 2001
From: Ed Schouten <ed@nuxi.nl>
Date: Thu, 11 Aug 2016 19:23:30 +0000
Subject: [PATCH] Pass in frame pointer omitting compiler flags for CloudABI as
well.
On Linux we pass in -fomit-frame-pointer flags (and similar)
automatically if optimization is enabled. Let's do the same thing on
CloudABI. Without this, Clang seems to run out of registers quite
quickly while trying to build code with inline assembly.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@278393 91177308-0d34-0410-b5e6-96231b3b80d8
---
lib/Driver/Tools.cpp | 2 +-
test/Driver/frame-pointer-elim.c | 9 +++++++++
2 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 141d12e9a2..6011a7fa31 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -3242,7 +3242,7 @@ static bool shouldUseFramePointerForTarget(const ArgList &Args,
break;
}
- if (Triple.isOSLinux()) {
+ if (Triple.isOSLinux() || Triple.getOS() == llvm::Triple::CloudABI) {
switch (Triple.getArch()) {
// Don't use a frame pointer on linux if optimizing for certain targets.
case llvm::Triple::mips64:
diff --git a/test/Driver/frame-pointer-elim.c b/test/Driver/frame-pointer-elim.c
index 5355cbe3a3..139c0ccb95 100644
--- a/test/Driver/frame-pointer-elim.c
+++ b/test/Driver/frame-pointer-elim.c
@@ -8,6 +8,15 @@
// RUN: FileCheck --check-prefix=LINUX %s
// LINUX-NOT: "-momit-leaf-frame-pointer"
+// CloudABI follows the same rules as Linux.
+// RUN: %clang -### -target x86_64-unknown-cloudabi -S -O1 %s 2>&1 | \
+// RUN: FileCheck --check-prefix=CLOUDABI-OPT %s
+// CLOUDABI-OPT: "-momit-leaf-frame-pointer"
+
+// RUN: %clang -### -target x86_64-unknown-cloudabi -S %s 2>&1 | \
+// RUN: FileCheck --check-prefix=CLOUDABI %s
+// CLOUDABI-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 | \
--
2.40.0