mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-29 10:32:47 +00:00
e78760e179
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@8558 91177308-0d34-0410-b5e6-96231b3b80d8
22 lines
470 B
LLVM
22 lines
470 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-as < %s | 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
|
|
}
|
|
|