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| author | Guozhi Wei <carrot@google.com> | 2019-08-16 16:26:12 +0000 |
|---|---|---|
| committer | Guozhi Wei <carrot@google.com> | 2019-08-16 16:26:12 +0000 |
| commit | e03f6a16317625b97e9332eed7c6875fae6b1d94 (patch) | |
| tree | 0927ad94b00b216619af36873ee8b673d2ed109f /llvm/lib/Target/X86/X86.h | |
| parent | ac83aab035f2e7ea12cb623156ed4d1e8cd2816d (diff) | |
| download | bcm5719-llvm-e03f6a16317625b97e9332eed7c6875fae6b1d94.tar.gz bcm5719-llvm-e03f6a16317625b97e9332eed7c6875fae6b1d94.zip | |
[CodeGen/Analysis] Intrinsic llvm.assume should not block tail call optimization
In function Analysis.cpp:isInTailCallPosition, instructions between call and ret are checked to see if they block tail call optimization. If an instruction is an intrinsic call, only llvm.lifetime_end is allowed and other intrinsic functions block tail call. When compiling tcmalloc, we found llvm.assume between a hot function call and ret, it blocks the optimization. But llvm.assume doesn't generate instructions, it should not block tail call.
Differential Revision: https://reviews.llvm.org/D66096
llvm-svn: 369125
Diffstat (limited to 'llvm/lib/Target/X86/X86.h')
0 files changed, 0 insertions, 0 deletions
