mem-gep-zidx.ll
1.68 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
; RUN: opt -S -instcombine < %s | FileCheck %s
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
@f.a = private unnamed_addr constant [1 x i32] [i32 12], align 4
@f.b = private unnamed_addr constant [1 x i32] [i32 55], align 4
@f.c = linkonce unnamed_addr alias [1 x i32], [1 x i32]* @f.b
define signext i32 @test1(i32 signext %x) #0 {
entry:
%idxprom = sext i32 %x to i64
%arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* @f.a, i64 0, i64 %idxprom
%0 = load i32, i32* %arrayidx, align 4
ret i32 %0
; CHECK-LABEL: @test1
; CHECK: ret i32 12
}
declare void @foo(i64* %p)
define void @test2(i32 signext %x, i64 %v) #0 {
entry:
%p = alloca i64
%idxprom = sext i32 %x to i64
%arrayidx = getelementptr inbounds i64, i64* %p, i64 %idxprom
store i64 %v, i64* %arrayidx
call void @foo(i64* %p)
ret void
; CHECK-LABEL: @test2
; CHECK: %p = alloca i64
; CHECK: store i64 %v, i64* %p
; CHECK: ret void
}
define signext i32 @test3(i32 signext %x, i1 %y) #0 {
entry:
%idxprom = sext i32 %x to i64
%p = select i1 %y, [1 x i32]* @f.a, [1 x i32]* @f.b
%arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* %p, i64 0, i64 %idxprom
%0 = load i32, i32* %arrayidx, align 4
ret i32 %0
; CHECK-LABEL: @test3
; CHECK: getelementptr inbounds [1 x i32], [1 x i32]* %p, i64 0, i64 0
}
define signext i32 @test4(i32 signext %x, i1 %y) #0 {
entry:
%idxprom = sext i32 %x to i64
%arrayidx = getelementptr inbounds [1 x i32], [1 x i32]* @f.c, i64 0, i64 %idxprom
%0 = load i32, i32* %arrayidx, align 4
ret i32 %0
; CHECK-LABEL: @test4
; CHECK: getelementptr inbounds [1 x i32], [1 x i32]* @f.c, i64 0, i64 %idxprom
}
attributes #0 = { nounwind readnone }