mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-15 20:06:46 +00:00
9bc243b251
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47784 91177308-0d34-0410-b5e6-96231b3b80d8
54 lines
1.2 KiB
LLVM
54 lines
1.2 KiB
LLVM
; RUN: llvm-as < %s | 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) {
|
|
br i1 %cond, label %X, label %Y
|
|
|
|
X: ; preds = %Y, %0
|
|
br label %Y
|
|
|
|
Y: ; preds = %X, %0
|
|
br label %X
|
|
}
|
|
|
|
;; This is a pair of loops that share the same header
|
|
define void @sharedheader(i1 %cond) {
|
|
br label %A
|
|
|
|
A: ; preds = %Y, %X, %0
|
|
br i1 %cond, label %X, label %Y
|
|
|
|
X: ; preds = %A
|
|
br label %A
|
|
|
|
Y: ; preds = %A
|
|
br label %A
|
|
}
|
|
|
|
|
|
;; This is a simple nested loop
|
|
define void @nested(i1 %cond1, i1 %cond2, i1 %cond3) {
|
|
br label %Loop1
|
|
|
|
Loop1: ; preds = %L2Exit, %0
|
|
br label %Loop2
|
|
|
|
Loop2: ; preds = %L3Exit, %Loop1
|
|
br label %Loop3
|
|
|
|
Loop3: ; preds = %Loop3, %Loop2
|
|
br i1 %cond3, label %Loop3, label %L3Exit
|
|
|
|
L3Exit: ; preds = %Loop3
|
|
br i1 %cond2, label %Loop2, label %L2Exit
|
|
|
|
L2Exit: ; preds = %L3Exit
|
|
br i1 %cond1, label %Loop1, label %L1Exit
|
|
|
|
L1Exit: ; preds = %L2Exit
|
|
ret void
|
|
}
|
|
|