view test/CodeGen/PowerPC/and_add.ll @ 83:60c9769439b8 LLVM3.7

LLVM 3.7
author Tatsuki IHA <e125716@ie.u-ryukyu.ac.jp>
date Wed, 18 Feb 2015 14:55:36 +0900
parents 95c75e76d11b
children 1172e4bd9c6f
line wrap: on
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; RUN: llc < %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
}