bbfb13a5ff
This removes the select constant expression, as part of https://discourse.llvm.org/t/rfc-remove-most-constant-expressions/63179. Uses of this expressions have already been removed in advance, so this just removes related infrastructure and updates tests. Differential Revision: https://reviews.llvm.org/D145382
20 lines
943 B
LLVM
20 lines
943 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=instsimplify < %s | FileCheck %s
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%S = type { i16, i32 }
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; InstCombine will be able to fold this into zeroinitializer
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define <2 x i16> @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SEL:%.*]] = select i1 icmp eq (i16 extractelement (<2 x i16> bitcast (<1 x i32> <i32 1> to <2 x i16>), i32 0), i16 0), [[S:%.*]] zeroinitializer, [[S]] { i16 0, i32 1 }
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; CHECK-NEXT: [[E:%.*]] = extractvalue [[S]] [[SEL]], 0
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; CHECK-NEXT: [[B:%.*]] = insertelement <2 x i16> <i16 undef, i16 0>, i16 [[E]], i32 0
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; CHECK-NEXT: ret <2 x i16> [[B]]
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;
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entry:
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%sel = select i1 icmp eq (i16 extractelement (<2 x i16> bitcast (<1 x i32> <i32 1> to <2 x i16>), i32 0), i16 0), %S zeroinitializer, %S { i16 0, i32 1 }
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%e = extractvalue %S %sel, 0
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%b = insertelement <2 x i16> <i16 undef, i16 0>, i16 %e, i32 0
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ret <2 x i16> %b
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}
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