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Move FP_REG_KILL closer to the actual branch instruction.

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llvm-svn: 10563
This commit is contained in:
Alkis Evlogimenos 2003-12-20 17:28:15 +00:00
parent 41bd8284e3
commit 7b61337ce6
1 changed files with 5 additions and 2 deletions
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7
lib/Target/X86/InstSelectSimple.cpp
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@ -883,11 +883,12 @@ static inline BasicBlock *getBlockAfter(BasicBlock *BB) {
///
void ISel::visitBranchInst(BranchInst &BI) {
BasicBlock *NextBB = getBlockAfter(BI.getParent()); // BB after current one
BuildMI(BB, X86::FP_REG_KILL, 0);
if (!BI.isConditional()) { // Unconditional branch?
if (BI.getSuccessor(0) != NextBB)
if (BI.getSuccessor(0) != NextBB) {
BuildMI(BB, X86::FP_REG_KILL, 0);
BuildMI(BB, X86::JMP, 1).addPCDisp(BI.getSuccessor(0));
}
return;
}
@ -898,6 +899,7 @@ void ISel::visitBranchInst(BranchInst &BI) {
// computed some other way...
unsigned condReg = getReg(BI.getCondition());
BuildMI(BB, X86::CMPri8, 2).addReg(condReg).addZImm(0);
BuildMI(BB, X86::FP_REG_KILL, 0);
if (BI.getSuccessor(1) == NextBB) {
if (BI.getSuccessor(0) != NextBB)
BuildMI(BB, X86::JNE, 1).addPCDisp(BI.getSuccessor(0));
@ -936,6 +938,7 @@ void ISel::visitBranchInst(BranchInst &BI) {
X86::JS, X86::JNS },
};
BuildMI(BB, X86::FP_REG_KILL, 0);
if (BI.getSuccessor(0) != NextBB) {
BuildMI(BB, OpcodeTab[isSigned][OpNum], 1).addPCDisp(BI.getSuccessor(0));
if (BI.getSuccessor(1) != NextBB)