mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 16:33:37 +01:00
19 lines
502 B
LLVM
19 lines
502 B
LLVM
; Test merging of blocks with phi nodes.
|
|
;
|
|
; RUN: opt %s -simplifycfg -S | not grep N:
|
|
;
|
|
|
|
define i32 @test(i1 %a) {
|
|
Q:
|
|
br i1 %a, label %N, label %M
|
|
N: ; preds = %Q
|
|
br label %M
|
|
M: ; preds = %N, %Q
|
|
; It's ok to merge N and M because the incoming values for W are the
|
|
; same for both cases...
|
|
%W = phi i32 [ 2, %N ], [ 2, %Q ] ; <i32> [#uses=1]
|
|
%R = add i32 %W, 1 ; <i32> [#uses=1]
|
|
ret i32 %R
|
|
}
|
|
|