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| author | Chris Lattner <sabre@nondot.org> | 2009-06-27 04:06:41 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2009-06-27 04:06:41 +0000 |
| commit | c91e8c746445f7ba2656f86685507ea61454194d (patch) | |
| tree | ec024e8124cd5b3c6fd0f1ade68ec97747ce26cc /llvm/lib | |
| parent | f0a7f3b0893751ec1589b06b8702da51e33a5fb3 (diff) | |
| download | bcm5719-llvm-c91e8c746445f7ba2656f86685507ea61454194d.tar.gz bcm5719-llvm-c91e8c746445f7ba2656f86685507ea61454194d.zip | |
When doing remat, don't consider uses of non-allocatable physregs. Patch
by Evan.
llvm-svn: 74370
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/CodeGen/LiveIntervalAnalysis.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp index d6931df896d..21bb5dc0127 100644 --- a/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/llvm/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -947,6 +947,10 @@ unsigned LiveIntervals::getReMatImplicitUse(const LiveInterval &li, unsigned Reg = MO.getReg(); if (Reg == 0 || Reg == li.reg) continue; + + if (TargetRegisterInfo::isPhysicalRegister(Reg) && + !allocatableRegs_[Reg]) + continue; // FIXME: For now, only remat MI with at most one register operand. assert(!RegOp && "Can't rematerialize instruction with multiple register operand!"); |
