undef-order.ll
1.21 KB
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;RUN: opt -mem2reg -S < %s | FileCheck %s
declare i1 @cond()
define i32 @foo() {
Entry:
%val = alloca i32
%c1 = call i1 @cond()
br i1 %c1, label %Store1, label %Store2
Block1:
br label %Join
Block2:
br label %Join
Block3:
br label %Join
Block4:
br label %Join
Block5:
br label %Join
Store1:
store i32 1, i32* %val
br label %Join
Block6:
br label %Join
Block7:
br label %Join
Block8:
br label %Join
Block9:
br label %Join
Block10:
br label %Join
Store2:
store i32 2, i32* %val
br label %Join
Block11:
br label %Join
Block12:
br label %Join
Block13:
br label %Join
Block14:
br label %Join
Block15:
br label %Join
Block16:
br label %Join
Join:
; Phi inserted here should have operands appended deterministically
; CHECK: %val.0 = phi i32 [ 1, %Store1 ], [ 2, %Store2 ], [ undef, %Block1 ], [ undef, %Block2 ], [ undef, %Block3 ], [ undef, %Block4 ], [ undef, %Block5 ], [ undef, %Block6 ], [ undef, %Block7 ], [ undef, %Block8 ], [ undef, %Block9 ], [ undef, %Block10 ], [ undef, %Block11 ], [ undef, %Block12 ], [ undef, %Block13 ], [ undef, %Block14 ], [ undef, %Block15 ], [ undef, %Block16 ]
%result = load i32, i32* %val
ret i32 %result
}