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; RUN: opt -instcombine -S <%s | FileCheck %s
; PR5262
; Make sure the PHI node gets put in a place where all of its operands dominate it
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
target triple = "x86_64-unknown-linux-gnu"
@tmp2 = global i64 0 ; <i64*> [#uses=1]
declare void @use(i64) nounwind
define void @foo(i1) nounwind align 2 {
; <label>:1
br i1 %0, label %2, label %3
; <label>:2 ; preds = %1
br label %3
; <label>:3 ; preds = %2, %1
; CHECK: <label>:3
; CHECK-NEXT: %v4 = phi i1 [ false, %2 ], [ true, %1 ]
; CHECK-NEXT: %v4_ = phi i1 [ true, %2 ], [ false, %1 ]
; CHECK-NEXT: br label %l8
%v4 = phi i8 [ 1, %2 ], [ 0, %1 ] ; <i8> [#uses=1]
%v4_ = phi i8 [ 0, %2 ], [ 1, %1 ] ; <i8> [#uses=1]
%v5 = icmp eq i8 %v4, 0 ; <i1> [#uses=1]
%v5_ = icmp eq i8 %v4_, 0 ; <i1> [#uses=1]
%v6 = load i64* @tmp2, align 8 ; <i64> [#uses=1]
%v7 = select i1 %v5, i64 0, i64 %v6 ; <i64> [#uses=1]
br label %l8
l8:
%v9 = load i64* @tmp2, align 8
call void @use(i64 %v7)
br label %l10
l10:
%v11 = select i1 %v5_, i64 0, i64 %v9 ; <i64> [#uses=1]
call void @use(i64 %v11)
br label %l11
l11:
%v12 = load i64* @tmp2, align 8
%v13 = select i1 %v5_, i64 0, i64 %v12 ; <i64> [#uses=1]
call void @use(i64 %v13)
br i1 %0, label %l12, label %l13
l12:
br label %l13
l13:
;CHECK: l13:
;CHECK-NEXT: %v14 = phi i64 [ %v12, %l12 ], [ 0, %l11 ]
;CHECK-NEXT: call void @use(i64 %v14)
%v14 = phi i1 [0, %l12], [1, %l11]
%v16 = select i1 %v14, i64 0, i64 %v12 ; <i64> [#uses=1]
call void @use(i64 %v16)
ret void
}
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