commit	b75c8fc6fbac57e0bde233516fa125f65b36af84	[log] [tgz]
author	Nikita Popov <nikita.ppv@gmail.com>	Sat Apr 20 07:25:46 2019 +0000
committer	Nikita Popov <nikita.ppv@gmail.com>	Sat Apr 20 07:25:46 2019 +0000
tree	df835d745d4a007ab4503ee149c6073fe6b21d1d
parent	ce12ea8dfc371735672342f2dcc6ecfb32e3b4d7 [diff]

[X86] Fix stack probing on x32 (PR41477)

Fix for https://bugs.llvm.org/show_bug.cgi?id=41477. On the x32 ABI
with stack probing a dynamic alloca will result in a WIN_ALLOCA_32
with a 32-bit size. The current implementation tries to copy it into
RAX, resulting in a physreg copy error. Fix this by copying to EAX
instead. Also fix incorrect opcodes or registers used in subs.

llvm-svn: 358807

llvm/lib/Target/X86/X86FrameLowering.cpp[diff]
llvm/lib/Target/X86/X86WinAllocaExpander.cpp[diff]
llvm/test/CodeGen/X86/probe-stack-x32.ll[Added - diff]

3 files changed

tree: df835d745d4a007ab4503ee149c6073fe6b21d1d

clang/
clang-tools-extra/
compiler-rt/
debuginfo-tests/
libclc/
libcxx/
libcxxabi/
libunwind/
lld/
lldb/
llgo/
llvm/
openmp/
parallel-libs/
polly/
pstl/
.arcconfig
.clang-format
.clang-tidy
.gitignore
README.md

README.md

The LLVM Compiler Infrastructure

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.