6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-04-12 23:37:33 +00:00
Code Issues Projects Releases Wiki Activity

new testcase that condprop should handle. The PHI node becomes useless

Browse Source 
after threading the branch, because both operands are the same value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22668 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-08-05 00:59:55 +00:00
parent 5e1b231921
commit 2733b30195
1 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
test/Transforms/CondProp/phisimplify2.ll Normal file
View File

@ -0,0 +1,36 @@
; RUN: llvm-as < %s | opt -condprop | llvm-dis | not grep phi
declare bool %foo()
int %test(uint %C) {
%Val = call bool %foo()
switch uint %C, label %T1 [
uint 4, label %T2
uint 17, label %T3
]
T1:
call void %a()
br label %Cont
T2:
call void %b()
br label %Cont
T3:
call void %c()
br label %Cont
Cont:
;; PHI becomes dead after threading T2
%C2 = phi bool [%Val, %T1], [true, %T2], [%Val, %T3]
br bool %C2, label %L2, label %F2
L2:
call void %d()
ret int 17
F2:
call void %e()
ret int 1
}
declare void %a()
declare void %b()
declare void %c()
declare void %d()
declare void %e()