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[ConstantFolding] Properly support constant folding of vector powi intrinsic. The second argument is not a vector so needs special treatment.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@304679 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Craig Topper 2017-06-04 07:30:28 +00:00
parent e869716ca3
commit d381818c94
2 changed files with 3 additions and 3 deletions
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3
lib/Analysis/ConstantFolding.cpp
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@ -2036,7 +2036,8 @@ Constant *ConstantFoldVectorCall(StringRef Name, unsigned IntrinsicID,
for (unsigned J = 0, JE = Operands.size(); J != JE; ++J) {
// These intrinsics use a scalar type for their second argument.
if (J == 1 &&
(IntrinsicID == Intrinsic::cttz || IntrinsicID == Intrinsic::ctlz)) {
(IntrinsicID == Intrinsic::cttz || IntrinsicID == Intrinsic::ctlz ||
IntrinsicID == Intrinsic::powi)) {
Lane[J] = Operands[J];
continue;
}

3
test/Transforms/InstSimplify/call.ll
View File

@ -437,8 +437,7 @@ entry:
define <2 x double> @constant_fold_powi_vec() nounwind uwtable ssp {
; CHECK-LABEL: @constant_fold_powi_vec(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = call <2 x double> @llvm.powi.v2f64(<2 x double> <double 3.000000e+00, double 5.000000e+00>, i32 2)
; CHECK-NEXT: ret <2 x double> [[TMP0]]
; CHECK-NEXT: ret <2 x double> <double 9.000000e+00, double 2.500000e+01>
;
entry:
%0 = call <2 x double> @llvm.powi.v2f64(<2 x double> <double 3.00000e+00, double 5.00000e+00>, i32 2)