29 lines
684 B
LLVM
29 lines
684 B
LLVM
; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %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 ptr
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define ptr @test1(i1 %cond, ptr %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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br label %join
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if:
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%load = load ptr, ptr @GV, align 8, !dereferenceable !0
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br label %join
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join:
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%phi = phi ptr [ %P, %then ], [ %load, %if ]
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ret ptr %phi
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}
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; CHECK-LABEL: define ptr @test1(
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; CHECK: %[[load:.*]] = load ptr, ptr @GV, align 8{{$}}
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; CHECK: %[[phi:.*]] = select i1 %cond, ptr %[[load]], ptr %P
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; CHECK: ret ptr %[[phi]]
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!0 = !{i64 8}
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