File: EmptyBlockMerge.ll

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (21 lines) | stat: -rw-r--r-- 530 bytes parent folder | download | duplicates (15)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
; Basic block #2 should not be merged into BB #3!
;
; RUN: opt < %s -simplifycfg -S | FileCheck %s

declare void @foo()

define void @cprop_test12(i32* %data) {
bb0:
	%reg108 = load i32, i32* %data		; <i32> [#uses=2]
	%cond218 = icmp ne i32 %reg108, 5		; <i1> [#uses=1]
	br i1 %cond218, label %bb3, label %bb2
bb2:		; preds = %bb0
	call void @foo( )
; CHECK: br label %bb3
	br label %bb3
bb3:		; preds = %bb2, %bb0
	%reg117 = phi i32 [ 110, %bb2 ], [ %reg108, %bb0 ]		; <i32> [#uses=1]
	store i32 %reg117, i32* %data
	ret void
}