95fedfab6c
Normally the index type will already be canonicalized here, but this is not guaranteed depending on visitation order. The code was already accounting for a potentially needed sext, but a trunc may also be needed. Add a ConstantExpr::getSExtOrTrunc() helper method to make this simpler. This matches the corresponding IRBuilder method in behavior. Fixes https://github.com/llvm/llvm-project/issues/55228.
22 lines
708 B
LLVM
22 lines
708 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -instcombine < %s | FileCheck %s
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target datalayout = "p:8:8"
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@g = external global i8
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@c = constant ptr getelementptr inbounds (i8, ptr @g, i64 1)
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define i1 @test(ptr %p) {
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; CHECK-LABEL: @test(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[P:%.*]], getelementptr inbounds (i8, ptr @g, i8 1)
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%alloca = alloca ptr
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call void @llvm.memcpy.p0.p0.i32(ptr %alloca, ptr @c, i32 0, i1 false)
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%load = load ptr, ptr %alloca
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%cmp = icmp eq ptr %p, %load
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ret i1 %cmp
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}
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declare void @llvm.memcpy.p0.p0.i32(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i32, i1 immarg)
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