blob: 82dd957654e87d345cb6f97846869146b04279de (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
|
; RUN: llc -verify-machineinstrs < %s -march=ppc32 -o %t
; RUN: grep slwi %t
; RUN: not grep addi %t
; RUN: not grep rlwinm %t
define i32 @test(i32 %A) {
;; shift
%B = mul i32 %A, 8 ; <i32> [#uses=1]
;; dead, no demanded bits.
%C = add i32 %B, 7 ; <i32> [#uses=1]
;; dead once add is gone.
%D = and i32 %C, -8 ; <i32> [#uses=1]
ret i32 %D
}
|