c1e0faecfc
instructions - instead of bitcasting and extract element lets use trunc or trunc and logical shift right to split. - fixes #139020
19 lines
731 B
LLVM
19 lines
731 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -S -passes='dxil-legalize' -mtriple=dxil-pc-shadermodel6.3-library %s | FileCheck %s
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define void @split_via_extract(i64 noundef %a) {
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; CHECK-LABEL: define void @split_via_extract(
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; CHECK-SAME: i64 noundef [[A:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[TMP0:%.*]] = trunc i64 [[A]] to i32
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; CHECK-NEXT: [[TMP1:%.*]] = lshr i64 [[A]], 32
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; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[TMP1]] to i32
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; CHECK-NEXT: ret void
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;
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entry:
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%vecA = bitcast i64 %a to <2 x i32>
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%low = extractelement <2 x i32> %vecA, i32 0 ; low 32 bits
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%high = extractelement <2 x i32> %vecA, i32 1 ; high 32 bits
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ret void
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}
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