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Rearrange IntrinsicsOpt pass

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This commit is contained in:
Vsevolod Livinskiy
2016-01-20 19:58:59 +03:00
parent 042c662d9d
commit 6f886b2457
1 changed files with 32 additions and 34 deletions
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66
opt.cpp
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@@ -934,7 +934,7 @@ Optimize(llvm::Module *module, int optLevel) {
*/
class IntrinsicsOpt : public llvm::BasicBlockPass {
public:
IntrinsicsOpt();
IntrinsicsOpt() : BasicBlockPass(ID) {};
const char *getPassName() const { return "Intrinsics Cleanup Optimization"; }
bool runOnBasicBlock(llvm::BasicBlock &BB);
@@ -977,39 +977,6 @@ private:
char IntrinsicsOpt::ID = 0;
IntrinsicsOpt::IntrinsicsOpt()
: BasicBlockPass(ID) {
// All of the mask instructions we may encounter. Note that even if
// compiling for AVX, we may still encounter the regular 4-wide SSE
// MOVMSK instruction.
if (llvm::Function *ssei8Movmsk =
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_sse2_pmovmskb_128))) {
maskInstructions.push_back(ssei8Movmsk);
}
if (llvm::Function *sseFloatMovmsk =
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_sse_movmsk_ps))) {
maskInstructions.push_back(sseFloatMovmsk);
}
if (llvm::Function *__movmsk =
m->module->getFunction("__movmsk")) {
maskInstructions.push_back(__movmsk);
}
if (llvm::Function *avxFloatMovmsk =
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_avx_movmsk_ps_256))) {
maskInstructions.push_back(avxFloatMovmsk);
}
// And all of the blend instructions
blendInstructions.push_back(BlendInstruction(
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_sse41_blendvps)),
0xf, 0, 1, 2));
blendInstructions.push_back(BlendInstruction(
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_avx_blendv_ps_256)),
0xff, 0, 1, 2));
}
/** Given an llvm::Value, return true if we can determine that it's an
undefined value. This only makes a weak attempt at chasing this down,
only detecting flat-out undef values, and bitcasts of undef values.
@@ -1036,6 +1003,37 @@ bool
IntrinsicsOpt::runOnBasicBlock(llvm::BasicBlock &bb) {
DEBUG_START_PASS("IntrinsicsOpt");
// We can’t initialize mask/blend function vector during pass initialization,
// as they may be optimized out by the time the pass is invoked.
// All of the mask instructions we may encounter. Note that even if
// compiling for AVX, we may still encounter the regular 4-wide SSE
// MOVMSK instruction.
if (llvm::Function *ssei8Movmsk =
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_sse2_pmovmskb_128))) {
maskInstructions.push_back(ssei8Movmsk);
}
if (llvm::Function *sseFloatMovmsk =
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_sse_movmsk_ps))) {
maskInstructions.push_back(sseFloatMovmsk);
}
if (llvm::Function *__movmsk =
m->module->getFunction("__movmsk")) {
maskInstructions.push_back(__movmsk);
}
if (llvm::Function *avxFloatMovmsk =
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_avx_movmsk_ps_256))) {
maskInstructions.push_back(avxFloatMovmsk);
}
// And all of the blend instructions
blendInstructions.push_back(BlendInstruction(
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_sse41_blendvps)),
0xf, 0, 1, 2));
blendInstructions.push_back(BlendInstruction(
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_avx_blendv_ps_256)),
0xff, 0, 1, 2));
llvm::Function *avxMaskedLoad32 =
m->module->getFunction(llvm::Intrinsic::getName(llvm::Intrinsic::x86_avx_maskload_ps_256));
llvm::Function *avxMaskedLoad64 =