mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-02-08 06:32:24 +00:00
27 lines
447 B
LLVM
27 lines
447 B
LLVM
|
; Test merging of blocks that only have PHI nodes in them
|
||
|
|
;
|
||
|
|
; RUN: if as < %s | opt -simplifycfg | dis | grep 'N:'
|
||
|
|
; RUN: then exit 1
|
||
|
|
; RUN: else exit 0
|
||
|
|
; RUN: fi
|
||
|
|
;
|
||
|
|
|
||
|
|
int %test(bool %a, bool %b) {
|
||
|
|
br bool %a, label %M, label %O
|
||
|
|
|
||
|
|
O:
|
||
|
|
br bool %b, label %N, label %Q
|
||
|
|
Q:
|
||
|
|
br label %N
|
||
|
|
N:
|
||
|
|
%Wp = phi int [0, %O], [1, %Q]
|
||
|
|
; This block should be foldable into M
|
||
|
|
br label %M
|
||
|
|
|
||
|
|
M:
|
||
|
|
%W = phi int [%Wp, %N], [2, %0]
|
||
|
|
%R = add int %W, 1
|
||
|
|
ret int %R
|
||
|
|
}
|
||
|
|
|