mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-30 07:22:55 +01:00
22 lines
485 B
LLVM
22 lines
485 B
LLVM
; Test merging of blocks that only have PHI nodes in them. This tests the case
|
|
; where the mergedinto block doesn't have any PHI nodes, and is in fact
|
|
; dominated by the block-to-be-eliminated
|
|
;
|
|
; RUN: llvm-upgrade < %s | llvm-as | opt -simplifycfg | llvm-dis | not grep 'N:'
|
|
;
|
|
|
|
int %test(bool %a, bool %b) {
|
|
br bool %b, label %N, label %Q
|
|
Q:
|
|
br label %N
|
|
N:
|
|
%W = phi int [0, %0], [1, %Q]
|
|
; This block should be foldable into M
|
|
br label %M
|
|
|
|
M:
|
|
%R = add int %W, 1
|
|
ret int %R
|
|
}
|
|
|