llvm-mirror/2009-06-03-Win64DisableRedZone.ll at 3a15ccb43d8c48eed2b170a3b00d3e106685b102 - llvm-mirror - Git.je (Gitea)

RPCS3/llvm-mirror

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Charles Davis 5c83517500 Target/X86: Never use the redzone for Win64 ABI functions.

Summary:
Until now, we did this (among other things) based on whether or not the
target was Windows. This is clearly wrong, not just for Win64 ABI functions
on non-Windows, but for System V ABI functions on Windows, too. In this
change, we make this decision based on the ABI the calling convention
specifies instead.

Reviewers: rnk

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D7953

llvm-svn: 230793

2015-02-27 21:11:16 +00:00

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 ; RUN: llc -mtriple=x86_64-mingw32 < %s | FileCheck %s
 ; RUN: llc -mtriple=x86_64-linux < %s | FileCheck %s
 ; CHECK-NOT: -{{[1-9][0-9]*}}(%rsp)
 define x86_64_win64cc x86_fp80 @a(i64 %x) nounwind readnone {
 entry:
         %conv = sitofp i64 %x to x86_fp80               ; <x86_fp80> [#uses=1]
         ret x86_fp80 %conv
 }