2003-10-05 23:11:57 +02:00
|
|
|
; Mem2reg should not insert dead PHI nodes! The naive algorithm inserts a PHI
|
|
|
|
; node in L3, even though there is no load of %A in anything dominated by L3.
|
|
|
|
|
2009-09-11 20:01:28 +02:00
|
|
|
; RUN: opt < %s -mem2reg -S | not grep phi
|
2003-10-05 23:11:57 +02:00
|
|
|
|
2008-03-19 08:28:33 +01:00
|
|
|
define void @test(i32 %B, i1 %C) {
|
|
|
|
%A = alloca i32 ; <i32*> [#uses=4]
|
|
|
|
store i32 %B, i32* %A
|
|
|
|
br i1 %C, label %L1, label %L2
|
|
|
|
L1: ; preds = %0
|
|
|
|
store i32 %B, i32* %A
|
|
|
|
%D = load i32* %A ; <i32> [#uses=1]
|
|
|
|
call void @test( i32 %D, i1 false )
|
2003-10-05 23:11:57 +02:00
|
|
|
br label %L3
|
2008-03-19 08:28:33 +01:00
|
|
|
L2: ; preds = %0
|
|
|
|
%E = load i32* %A ; <i32> [#uses=1]
|
|
|
|
call void @test( i32 %E, i1 true )
|
2003-10-05 23:11:57 +02:00
|
|
|
br label %L3
|
2008-03-19 08:28:33 +01:00
|
|
|
L3: ; preds = %L2, %L1
|
2003-10-05 23:11:57 +02:00
|
|
|
ret void
|
|
|
|
}
|
2008-03-19 08:28:33 +01:00
|
|
|
|