aboutsummaryrefslogtreecommitdiffstats
path: root/test/Transforms/InstCombine/2004-09-20-BadLoadCombine.ll
blob: d17db8d7eac2083e54bb4072498d88a05fa36f26 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
; RUN: opt < %s -instcombine -mem2reg -S | \
; RUN:   not grep "i32 1"

; When propagating the load through the select, make sure that the load is
; inserted where the original load was, not where the select is.  Not doing
; so could produce incorrect results!

define i32 @test(i1 %C) {
        %X = alloca i32         ; <i32*> [#uses=3]
        %X2 = alloca i32                ; <i32*> [#uses=2]
        store i32 1, i32* %X
        store i32 2, i32* %X2
        %Y = select i1 %C, i32* %X, i32* %X2            ; <i32*> [#uses=1]
        store i32 3, i32* %X
        %Z = load i32* %Y               ; <i32> [#uses=1]
        ret i32 %Z
}