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| author | Craig Topper <craig.topper@intel.com> | 2018-08-28 02:02:29 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2018-08-28 02:02:29 +0000 |
| commit | a6cd4b9bced862533d5ce7ca4dde18d82b623801 (patch) | |
| tree | c38519729245f33082379ad827804753dc6aec69 /llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp | |
| parent | 7c80f98b69a6a9ad027a3f4bfda073958141d977 (diff) | |
| download | bcm5719-llvm-a6cd4b9bced862533d5ce7ca4dde18d82b623801.tar.gz bcm5719-llvm-a6cd4b9bced862533d5ce7ca4dde18d82b623801.zip | |
[InstCombine] Extend (add (sext x), cst) --> (sext (add x, cst')) and (add (zext x), cst) --> (zext (add x, cst')) to work for vectors
Differential Revision: https://reviews.llvm.org/D51236
llvm-svn: 340796
Diffstat (limited to 'llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp')
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp index 58bf5b4be0e..30067fe4871 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineAddSub.cpp @@ -1195,7 +1195,8 @@ Instruction *InstCombiner::visitAdd(BinaryOperator &I) { // integer add followed by a sext. if (SExtInst *LHSConv = dyn_cast<SExtInst>(LHS)) { // (add (sext x), cst) --> (sext (add x, cst')) - if (ConstantInt *RHSC = dyn_cast<ConstantInt>(RHS)) { + Constant *RHSC; + if (match(RHS, m_Constant(RHSC))) { if (LHSConv->hasOneUse()) { Constant *CI = ConstantExpr::getTrunc(RHSC, LHSConv->getOperand(0)->getType()); @@ -1231,7 +1232,8 @@ Instruction *InstCombiner::visitAdd(BinaryOperator &I) { // integer add followed by a zext. if (auto *LHSConv = dyn_cast<ZExtInst>(LHS)) { // (add (zext x), cst) --> (zext (add x, cst')) - if (ConstantInt *RHSC = dyn_cast<ConstantInt>(RHS)) { + Constant *RHSC; + if (match(RHS, m_Constant(RHSC))) { if (LHSConv->hasOneUse()) { Constant *CI = ConstantExpr::getTrunc(RHSC, LHSConv->getOperand(0)->getType()); |
