forked from OSchip/llvm-project
32 lines
729 B
LLVM
32 lines
729 B
LLVM
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; RUN: opt -S -simplifycfg < %s | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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@GV = external constant i64*
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define i64* @test1(i1 %cond, i8* %P) {
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entry:
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br i1 %cond, label %if, label %then
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then:
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%bc = bitcast i8* %P to i64*
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br label %join
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if:
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%load = load i64*, i64** @GV, align 8, !dereferenceable !0
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br label %join
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join:
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%phi = phi i64* [ %bc, %then ], [ %load, %if ]
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ret i64* %phi
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}
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; CHECK-LABEL: define i64* @test1(
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; CHECK: %[[bc:.*]] = bitcast i8* %P to i64*
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; CHECK: %[[load:.*]] = load i64*, i64** @GV, align 8{{$}}
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; CHECK: %[[phi:.*]] = select i1 %cond, i64* %[[load]], i64* %[[bc]]
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; CHECK: ret i64* %[[phi]]
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!0 = !{i64 8}
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