pr28626.ll
1.37 KB
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; RUN: opt -S -gvn-hoist < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
define void @test1(i1 %a, i1** %d) {
entry:
%0 = load i1*, i1** %d, align 8
br i1 %a, label %if.then, label %if.else
if.then: ; preds = %entry
br label %if.end
if.else: ; preds = %entry
br label %if.end
if.end: ; preds = %if.else, %if.then
%c.0 = phi i1 [ 1, %if.then ], [ 0, %if.else ]
br i1 %c.0, label %if.then2, label %if.else3
if.then2: ; preds = %if.end
%rc = getelementptr inbounds i1, i1* %0, i64 0
store i1 %c.0, i1* %rc, align 4
br label %if.end6
if.else3: ; preds = %if.end
%rc5 = getelementptr inbounds i1, i1* %0, i64 0
store i1 %c.0, i1* %rc5, align 4
br label %if.end6
if.end6: ; preds = %if.else3, %if.then2
ret void
}
; CHECK-LABEL: define void @test1(
; CHECK: %[[load:.*]] = load i1*, i1** %d, align 8
; CHECK: %[[phi:.*]] = phi i1 [ true, {{.*}} ], [ false, {{.*}} ]
; CHECK: %[[gep0:.*]] = getelementptr inbounds i1, i1* %[[load]], i64 0
; CHECK: store i1 %[[phi]], i1* %[[gep0]], align 4
; Check that store instructions are hoisted.
; CHECK-NOT: store