File: select_promote.ll

package info (click to toggle)
llvm-3.0 3.0-10
  • links: PTS, VCS
  • area: main
  • in suites: wheezy
  • size: 75,412 kB
  • sloc: cpp: 468,043; asm: 109,345; ansic: 13,782; sh: 12,935; ml: 4,716; python: 4,351; perl: 2,096; makefile: 1,905; pascal: 1,578; exp: 389; xml: 283; lisp: 187; csh: 117
file content (18 lines) | stat: -rw-r--r-- 683 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
; Test promotion of loads that use the result of a select instruction.  This
; should be simplified by the instcombine pass.

; RUN: opt < %s -instcombine -mem2reg -S | not grep alloca

define i32 @main() {
	%mem_tmp.0 = alloca i32		; <i32*> [#uses=3]
	%mem_tmp.1 = alloca i32		; <i32*> [#uses=3]
	store i32 0, i32* %mem_tmp.0
	store i32 1, i32* %mem_tmp.1
	%tmp.1.i = load i32* %mem_tmp.1		; <i32> [#uses=1]
	%tmp.3.i = load i32* %mem_tmp.0		; <i32> [#uses=1]
	%tmp.4.i = icmp sle i32 %tmp.1.i, %tmp.3.i		; <i1> [#uses=1]
	%mem_tmp.i.0 = select i1 %tmp.4.i, i32* %mem_tmp.1, i32* %mem_tmp.0		; <i32*> [#uses=1]
	%tmp.3 = load i32* %mem_tmp.i.0		; <i32> [#uses=1]
	ret i32 %tmp.3
}