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| author | Heejin Ahn <aheejin@gmail.com> | 2019-03-05 20:35:34 +0000 |
|---|---|---|
| committer | Heejin Ahn <aheejin@gmail.com> | 2019-03-05 20:35:34 +0000 |
| commit | ef9d6aea458d44a1cb446c96ef5093b11735657b (patch) | |
| tree | 727159d33fef13a5c704cfc27315f63b013f4e3a /llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp | |
| parent | c38831e11dc33d2a8325ee6ada9827cff0396945 (diff) | |
| download | llvm-ef9d6aea458d44a1cb446c96ef5093b11735657b.zip llvm-ef9d6aea458d44a1cb446c96ef5093b11735657b.tar.gz llvm-ef9d6aea458d44a1cb446c96ef5093b11735657b.tar.bz2 | |
[WebAssembly] Disable MachineBlockPlacement pass
Summary:
This pass hurts code size for wasm and sometimes generates irreducible
control flow.
Context: https://github.com/emscripten-core/emscripten/pull/8233
Reviewers: kripken, dschuff
Subscribers: sunfish, sbc100, jgravelle-google, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D58953
llvm-svn: 355437
Diffstat (limited to 'llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp')
| -rw-r--r-- | llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp index 768ab7a..9b10c8d 100644 --- a/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp +++ b/llvm/lib/Target/WebAssembly/WebAssemblyTargetMachine.cpp @@ -290,6 +290,10 @@ void WebAssemblyPassConfig::addPostRegAlloc() { disablePass(&PatchableFunctionID); disablePass(&ShrinkWrapID); + // This pass hurts code size for wasm because it can generate irreducible + // control flow. + disablePass(&MachineBlockPlacementID); + TargetPassConfig::addPostRegAlloc(); } |