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Turn optimize compares back on with fix. We needed to test that a machine op was 

a register before checking if it was defined.

llvm-svn: 110733
This commit is contained in:
Bill Wendling 2010-08-10 21:38:11 +00:00
parent 705c3b6aaa
commit 0757820f8f
2 changed files with 2 additions and 2 deletions
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2
llvm/lib/CodeGen/PeepholeOptimizer.cpp
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@ -54,7 +54,7 @@ STATISTIC(NumReuse, "Number of extension results reused");
// Optimize Comparisons
static cl::opt<bool>
EnableOptCmps("enable-optimize-cmps", cl::init(false), cl::Hidden);
EnableOptCmps("enable-optimize-cmps", cl::init(true), cl::Hidden);
STATISTIC(NumEliminated, "Number of compares eliminated");

2
llvm/lib/Target/ARM/ARMBaseInstrInfo.cpp
View File

@ -1386,7 +1386,7 @@ ConvertToSetZeroFlag(MachineInstr *MI, MachineInstr *CmpInstr) const {
for (unsigned IO = 0, EO = Instr.getNumOperands(); IO != EO; ++IO) {
const MachineOperand &MO = Instr.getOperand(IO);
if (!MO.isDef() || !MO.isReg()) continue;
if (!MO.isReg() || !MO.isDef()) continue;
// This instruction modifies CPSR before the one we want to change. We
// can't do this transformation.