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7af984d05f
As shown in: https://bugs.llvm.org/show_bug.cgi?id=45084 ...we failed to combine a gep with constant indexes with a pointer operand that is a select of constants. Differential Revision: https://reviews.llvm.org/D75807
63 lines
2.1 KiB
LLVM
63 lines
2.1 KiB
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 = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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@f.a = private unnamed_addr constant [1 x i32] [i32 12], align 4
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@f.b = private unnamed_addr constant [1 x i32] [i32 55], align 4
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@f.c = linkonce unnamed_addr alias [1 x i32], [1 x i32]* @f.b
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define signext i32 @test1(i32 signext %x) #0 {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: ret i32 12
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;
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%idxprom = sext i32 %x to i64
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%arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* @f.a, i64 0, i64 %idxprom
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%r = load i32, i32* %arrayidx, align 4
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ret i32 %r
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}
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declare void @foo(i64* %p)
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define void @test2(i32 signext %x, i64 %v) #0 {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[P:%.*]] = alloca i64, align 8
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; CHECK-NEXT: store i64 [[V:%.*]], i64* [[P]], align 8
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; CHECK-NEXT: call void @foo(i64* nonnull [[P]]) #1
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; CHECK-NEXT: ret void
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;
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%p = alloca i64
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%idxprom = sext i32 %x to i64
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%arrayidx = getelementptr inbounds i64, i64* %p, i64 %idxprom
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store i64 %v, i64* %arrayidx
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call void @foo(i64* %p)
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ret void
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}
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define signext i32 @test3(i32 signext %x, i1 %y) #0 {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[R:%.*]] = select i1 [[Y:%.*]], i32 12, i32 55
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; CHECK-NEXT: ret i32 [[R]]
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;
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%idxprom = sext i32 %x to i64
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%p = select i1 %y, [1 x i32]* @f.a, [1 x i32]* @f.b
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%arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* %p, i64 0, i64 %idxprom
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%r = load i32, i32* %arrayidx, align 4
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ret i32 %r
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}
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define signext i32 @test4(i32 signext %x, i1 %y) #0 {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[IDXPROM:%.*]] = sext i32 [[X:%.*]] to i64
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; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* @f.c, i64 0, i64 [[IDXPROM]]
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; CHECK-NEXT: [[R:%.*]] = load i32, i32* [[ARRAYIDX]], align 4
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; CHECK-NEXT: ret i32 [[R]]
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;
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%idxprom = sext i32 %x to i64
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%arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* @f.c, i64 0, i64 %idxprom
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%r = load i32, i32* %arrayidx, align 4
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ret i32 %r
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}
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attributes #0 = { nounwind readnone }
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