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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=newgvn -S | FileCheck %s
define i32 @main(ptr %p, i32 %x, i32 %y) {
; CHECK-LABEL: @main(
; CHECK-NEXT: block1:
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: br i1 [[CMP]], label [[BLOCK2:%.*]], label [[BLOCK3:%.*]]
; CHECK: block2:
; CHECK-NEXT: [[A:%.*]] = load ptr, ptr [[P:%.*]]
; CHECK-NEXT: br label [[BLOCK4:%.*]]
; CHECK: block3:
; CHECK-NEXT: [[B:%.*]] = load ptr, ptr [[P]]
; CHECK-NEXT: br label [[BLOCK4]]
; CHECK: block4:
; CHECK-NEXT: [[EXISTINGPHI:%.*]] = phi ptr [ [[A]], [[BLOCK2]] ], [ [[B]], [[BLOCK3]] ]
; CHECK-NEXT: [[C:%.*]] = load i32, ptr [[EXISTINGPHI]]
; CHECK-NEXT: [[E:%.*]] = add i32 [[C]], [[C]]
; CHECK-NEXT: ret i32 [[E]]
;
block1:
%cmp = icmp eq i32 %x, %y
br i1 %cmp , label %block2, label %block3
block2:
%a = load ptr, ptr %p
br label %block4
block3:
%b = load ptr, ptr %p
br label %block4
block4:
%existingPHI = phi ptr [ %a, %block2 ], [ %b, %block3 ]
%DEAD = load ptr, ptr %p
%c = load i32, ptr %DEAD
%d = load i32, ptr %existingPHI
%e = add i32 %c, %d
ret i32 %e
}
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