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| author | Owen Anderson <resistor@mac.com> | 2009-01-21 00:13:28 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2009-01-21 00:13:28 +0000 |
| commit | 6cf7c390ecf33cdbe9e65d230e4f61ac548893e6 (patch) | |
| tree | 7f92f3d67cc3691f1b81daa7758fa2dea10f2267 | |
| parent | 476615934a74a313a691413230d249889cfaa2f8 (diff) | |
| download | external_llvm-6cf7c390ecf33cdbe9e65d230e4f61ac548893e6.zip external_llvm-6cf7c390ecf33cdbe9e65d230e4f61ac548893e6.tar.gz external_llvm-6cf7c390ecf33cdbe9e65d230e4f61ac548893e6.tar.bz2 | |
Be more aggressive about renumbering vregs after splitting them.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@62639 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/PreAllocSplitting.cpp | 10 | ||||
| -rw-r--r-- | test/CodeGen/X86/pre-split2.ll | 2 |
2 files changed, 8 insertions, 4 deletions
diff --git a/lib/CodeGen/PreAllocSplitting.cpp b/lib/CodeGen/PreAllocSplitting.cpp index 6b37637..3c8257f 100644 --- a/lib/CodeGen/PreAllocSplitting.cpp +++ b/lib/CodeGen/PreAllocSplitting.cpp @@ -1127,9 +1127,11 @@ bool PreAllocSplitting::Rematerialize(unsigned vreg, VNInfo* ValNo, LIs->InsertMachineInstrInMaps(prior(RestorePt), RestoreIdx); if (KillPt->getParent() == BarrierMBB) { - UpdateRegisterInterval(ValNo, LIs->getUseIndex(KillIdx)+1, + VNInfo* After = UpdateRegisterInterval(ValNo, LIs->getUseIndex(KillIdx)+1, LIs->getDefIndex(RestoreIdx)); + RenumberValno(After); + ++NumSplits; ++NumRemats; return true; @@ -1312,9 +1314,11 @@ bool PreAllocSplitting::SplitRegLiveInterval(LiveInterval *LI) { UpdateSpillSlotInterval(ValNo, LIs->getUseIndex(SpillIndex)+1, LIs->getDefIndex(RestoreIndex)); - UpdateRegisterInterval(ValNo, LIs->getUseIndex(SpillIndex)+1, + VNInfo* After = UpdateRegisterInterval(ValNo, + LIs->getUseIndex(SpillIndex)+1, LIs->getDefIndex(RestoreIndex)); - + RenumberValno(After); + ++NumSplits; return true; } diff --git a/test/CodeGen/X86/pre-split2.ll b/test/CodeGen/X86/pre-split2.ll index 1d69aa8..fcb3f05 100644 --- a/test/CodeGen/X86/pre-split2.ll +++ b/test/CodeGen/X86/pre-split2.ll @@ -1,5 +1,5 @@ ; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 -pre-alloc-split -stats |& \ -; RUN: grep {pre-alloc-split} | count 2 +; RUN: grep {pre-alloc-split} | count 3 define i32 @t() { entry: |