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| author | Vasileios Kalintiris <Vasileios.Kalintiris@imgtec.com> | 2015-08-04 14:26:35 +0000 |
|---|---|---|
| committer | Vasileios Kalintiris <Vasileios.Kalintiris@imgtec.com> | 2015-08-04 14:26:35 +0000 |
| commit | 044e172228b89fcdf8843a4135e7f6afbb4fd7b5 (patch) | |
| tree | 06b65a7a3aea202089bfc717054fd6e9ea1b2839 /llvm/lib/CodeGen/MachineFunction.cpp | |
| parent | 602592a048fda2fb8bcc7c07ed1f1d0a02e8c0d5 (diff) | |
| download | llvm-044e172228b89fcdf8843a4135e7f6afbb4fd7b5.zip llvm-044e172228b89fcdf8843a4135e7f6afbb4fd7b5.tar.gz llvm-044e172228b89fcdf8843a4135e7f6afbb4fd7b5.tar.bz2 | |
Revert r229675 - [mips] Avoid redundant sign extension of the result of binary bitwise instructions.
It introduced two regressions on 64-bit big-endian targets running under N32
(MultiSource/Benchmarks/tramp3d-v4/tramp3d-v4, and
MultiSource/Applications/kimwitu++/kc) The issue is that on 64-bit targets
comparisons such as BEQ compare the whole GPR64 but incorrectly tell the
instruction selector that they operate on GPR32's. This leads to the
elimination of i32->i64 extensions that are actually required by
comparisons to work correctly.
There's currently a patch under review that fixes this problem.
llvm-svn: 243984
Diffstat (limited to 'llvm/lib/CodeGen/MachineFunction.cpp')
0 files changed, 0 insertions, 0 deletions