28 lines
1.0 KiB
LLVM
28 lines
1.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes=instcombine -S < %s | FileCheck %s
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; This vscale udiv with a power-of-2 splat on the rhs should not crash opt
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define <vscale x 2 x i32> @udiv_pow2_vscale(<vscale x 2 x i32> %lhs) {
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; CHECK-LABEL: define <vscale x 2 x i32> @udiv_pow2_vscale(
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; CHECK-SAME: <vscale x 2 x i32> [[LHS:%.*]]) {
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; CHECK-NEXT: [[RES1:%.*]] = lshr <vscale x 2 x i32> [[LHS]], splat (i32 1)
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; CHECK-NEXT: ret <vscale x 2 x i32> [[RES1]]
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;
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%res = udiv <vscale x 2 x i32> %lhs, splat (i32 2)
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ret <vscale x 2 x i32> %res
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}
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; This fixed width udiv with a power-of-2 splat on the rhs should also not
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; crash, and instcombine should eliminate the udiv
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define <2 x i32> @udiv_pow2_fixed(<2 x i32> %lhs) {
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; CHECK-LABEL: define <2 x i32> @udiv_pow2_fixed(
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; CHECK-SAME: <2 x i32> [[LHS:%.*]]) {
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; CHECK-NEXT: [[RES1:%.*]] = lshr <2 x i32> [[LHS]], splat (i32 1)
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; CHECK-NEXT: ret <2 x i32> [[RES1]]
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;
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%res = udiv <2 x i32> %lhs, splat (i32 2)
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ret <2 x i32> %res
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}
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