mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-01 00:11:00 +00:00
5373b721c0
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35412 91177308-0d34-0410-b5e6-96231b3b80d8
57 lines
796 B
LLVM
57 lines
796 B
LLVM
; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
|
|
; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
|
|
; RUN: diff %t1.ll %t2.ll
|
|
|
|
|
|
;; This is an irreducible flow graph
|
|
|
|
|
|
define void @"irreducible"(i1 %cond)
|
|
begin
|
|
br i1 %cond, label %X, label %Y
|
|
|
|
X:
|
|
br label %Y
|
|
Y:
|
|
br label %X
|
|
end
|
|
|
|
;; This is a pair of loops that share the same header
|
|
|
|
define void @"sharedheader"(i1 %cond)
|
|
begin
|
|
br label %A
|
|
A:
|
|
br i1 %cond, label %X, label %Y
|
|
|
|
X:
|
|
br label %A
|
|
Y:
|
|
br label %A
|
|
end
|
|
|
|
;; This is a simple nested loop
|
|
define void @"nested"(i1 %cond1, i1 %cond2, i1 %cond3)
|
|
begin
|
|
br label %Loop1
|
|
|
|
Loop1:
|
|
br label %Loop2
|
|
|
|
Loop2:
|
|
br label %Loop3
|
|
|
|
Loop3:
|
|
br i1 %cond3, label %Loop3, label %L3Exit
|
|
|
|
L3Exit:
|
|
br i1 %cond2, label %Loop2, label %L2Exit
|
|
|
|
L2Exit:
|
|
br i1 %cond1, label %Loop1, label %L1Exit
|
|
|
|
L1Exit:
|
|
ret void
|
|
end
|
|
|