commit 89c35fc44daf4b0a3608da50caaf8ec972565189
author Hans Wennborg <hans@hanshq.net> Fri Feb 23 13:46:25 2018 +0000
committer Hans Wennborg <hans@hanshq.net> Fri Feb 23 13:46:25 2018 +0000
tree a108f6b19465d21ba7f71b76d588faabb9790e44
parent c30034e574fb9543fcb37f0e899f254893f5a69b

Support for the mno-stack-arg-probe flag

Adds support for this flag. There is also another piece for clang
(separate review). More info:
https://bugs.llvm.org/show_bug.cgi?id=36221

By Ruslan Nikolaev!

Differential Revision: https://reviews.llvm.org/D43107

llvm-svn: 325900

llvm/lib/Target/AArch64/AArch64FrameLowering.cpp

diff --git a/llvm/lib/Target/AArch64/AArch64FrameLowering.cpp b/llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
index ea4bfe7..f49ca11 100644
--- a/llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
+++ b/llvm/lib/Target/AArch64/AArch64FrameLowering.cpp
@@ -369,7 +369,8 @@
     F.getFnAttribute("stack-probe-size")
         .getValueAsString()
         .getAsInteger(0, StackProbeSize);
-  return StackSizeInBytes >= StackProbeSize;
+  return (StackSizeInBytes >= StackProbeSize) &&
+         !F.hasFnAttribute("no-stack-arg-probe");
 }
 
 bool AArch64FrameLowering::shouldCombineCSRLocalStackBump(