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Remove various equality checks between GetInternalMask() and LLVMMaskAllOn

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These were never kicking in, since GetInternalMask() always loads from the
mask storage memory.
This commit is contained in:
Matt Pharr
2012-06-06 10:02:04 -07:00
parent 967bfa9c92
commit 7b6bd90903
2 changed files with 5 additions and 21 deletions
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15
ctx.cpp
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@@ -381,13 +381,8 @@ FunctionEmitContext::GetInternalMask() {
llvm::Value *
FunctionEmitContext::GetFullMask() {
llvm::Value *internalMask = GetInternalMask();
if (internalMask == LLVMMaskAllOn && functionMaskValue == LLVMMaskAllOn &&
!g->opt.disableMaskAllOnOptimizations)
return LLVMMaskAllOn;
else
return BinaryOperator(llvm::Instruction::And, GetInternalMask(),
functionMaskValue, "internal_mask&function_mask");
return BinaryOperator(llvm::Instruction::And, GetInternalMask(),
functionMaskValue, "internal_mask&function_mask");
}
@@ -673,9 +668,7 @@ FunctionEmitContext::Break(bool doCoherenceCheck) {
// If all of the enclosing 'if' tests in the loop have uniform control
// flow or if we can tell that the mask is all on, then we can just
// jump to the break location.
if (inSwitchStatement() == false &&
(ifsInCFAllUniform(CFInfo::Loop) ||
GetInternalMask() == LLVMMaskAllOn)) {
if (inSwitchStatement() == false && ifsInCFAllUniform(CFInfo::Loop)) {
BranchInst(breakTarget);
if (ifsInCFAllUniform(CFInfo::Loop) && doCoherenceCheck)
Warning(currentPos, "Coherent break statement not necessary in "
@@ -730,7 +723,7 @@ FunctionEmitContext::Continue(bool doCoherenceCheck) {
}
AssertPos(currentPos, controlFlowInfo.size() > 0);
if (ifsInCFAllUniform(CFInfo::Loop) || GetInternalMask() == LLVMMaskAllOn) {
if (ifsInCFAllUniform(CFInfo::Loop)) {
// Similarly to 'break' statements, we can immediately jump to the
// continue target if we're only in 'uniform' control flow within
// loop or if we can tell that the mask is all on.