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| author | Hal Finkel <hfinkel@anl.gov> | 2014-12-23 09:45:06 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2014-12-23 09:45:06 +0000 |
| commit | 6e27c6d4501c00fbe363c7d1fc7fd79344c8a8fb (patch) | |
| tree | 4107a42351026ad52fcff015c7371273bcaf4e20 /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 3121449f0bccb61920568efd9bc60023ff3eb93e (diff) | |
| download | llvm-6e27c6d4501c00fbe363c7d1fc7fd79344c8a8fb.zip llvm-6e27c6d4501c00fbe363c7d1fc7fd79344c8a8fb.tar.gz llvm-6e27c6d4501c00fbe363c7d1fc7fd79344c8a8fb.tar.bz2 | |
[PowerPC] Don't mark the return-address slot as immutable
It is tempting to mark the fixed stack slot used to store the return address as
immutable when lowering @llvm.returnaddress(i32 0). Unfortunately, within the
function, it is not completely immutable: it is written during the function
prologue. When using post-RA instruction scheduling, the prologue instructions
are available for scheduling, and we're not free to interchange the order of a
particular store in the prologue with loads from that stack location.
Fixes PR21976.
llvm-svn: 224761
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
0 files changed, 0 insertions, 0 deletions