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| author | Vitaly Buka <vitalybuka@google.com> | 2023-07-26 15:41:17 -0700 |
|---|---|---|
| committer | Vitaly Buka <vitalybuka@google.com> | 2023-07-26 22:13:32 -0700 |
| commit | a496c8be6e638ae58bb45f13113dbe3a4b7b23fd (patch) | |
| tree | 4c1f5e42c8ce8af5fd33d022e653e874f80742c9 /llvm/lib/CodeGen/LiveRangeEdit.cpp | |
| parent | fa140fe211836653269ba279381a55c171b52584 (diff) | |
| download | llvm-a496c8be6e638ae58bb45f13113dbe3a4b7b23fd.zip llvm-a496c8be6e638ae58bb45f13113dbe3a4b7b23fd.tar.gz llvm-a496c8be6e638ae58bb45f13113dbe3a4b7b23fd.tar.bz2 | |
Revert "[CodeGen]Allow targets to use target specific COPY instructions for live range splitting"
And dependent commits.
Details in D150388.
This reverts commit 825b7f0ca5f2211ec3c93139f98d1e24048c225c.
This reverts commit 7a98f084c4d121244ef7286bc6503b6a181d446e.
This reverts commit b4a62b1fa546312d882fa12dfdcd015177d66826.
This reverts commit b7836d856206ec39509d42529f958c920368166b.
No conflicts in the code, few tests had conflicts in autogenerated CHECKs:
llvm/test/CodeGen/Thumb2/mve-float32regloops.ll
llvm/test/CodeGen/AMDGPU/fix-frame-reg-in-custom-csr-spills.ll
Reviewed By: alexfh
Differential Revision: https://reviews.llvm.org/D156381
Diffstat (limited to 'llvm/lib/CodeGen/LiveRangeEdit.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/LiveRangeEdit.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/llvm/lib/CodeGen/LiveRangeEdit.cpp b/llvm/lib/CodeGen/LiveRangeEdit.cpp index ff49e08..c3477cd 100644 --- a/llvm/lib/CodeGen/LiveRangeEdit.cpp +++ b/llvm/lib/CodeGen/LiveRangeEdit.cpp @@ -352,8 +352,7 @@ void LiveRangeEdit::eliminateDeadDef(MachineInstr *MI, ToShrinkSet &ToShrink) { // unlikely to change anything. We typically don't want to shrink the // PIC base register that has lots of uses everywhere. // Always shrink COPY uses that probably come from live range splitting. - if ((MI->readsVirtualRegister(Reg) && - (MO.isDef() || TII.isCopyInstr(*MI))) || + if ((MI->readsVirtualRegister(Reg) && (MI->isCopy() || MO.isDef())) || (MO.readsReg() && (MRI.hasOneNonDBGUse(Reg) || useIsKill(LI, MO)))) ToShrink.insert(&LI); else if (MO.readsReg()) |