1; fastisel should not fold add with non-pointer bitwidth
2; sext(a) + sext(b) != sext(a + b)
3; RUN: llc -mtriple=x86_64-apple-darwin %s -O0 -o - | FileCheck %s
4
5define zeroext i8 @gep_promotion(i8* %ptr) nounwind uwtable ssp {
6entry:
7  %ptr.addr = alloca i8*, align 8
8  %add = add i8 64, 64 ; 0x40 + 0x40
9  %0 = load i8*, i8** %ptr.addr, align 8
10
11  ; CHECK-LABEL: _gep_promotion:
12  ; CHECK: movzbl ({{.*}})
13  %arrayidx = getelementptr inbounds i8, i8* %0, i8 %add
14
15  %1 = load i8, i8* %arrayidx, align 1
16  ret i8 %1
17}
18
19define zeroext i8 @gep_promotion_nonconst(i8 %i, i8* %ptr) nounwind uwtable ssp {
20entry:
21  %i.addr = alloca i8, align 4
22  %ptr.addr = alloca i8*, align 8
23  store i8 %i, i8* %i.addr, align 4
24  store i8* %ptr, i8** %ptr.addr, align 8
25  %0 = load i8, i8* %i.addr, align 4
26  ; CHECK-LABEL: _gep_promotion_nonconst:
27  ; CHECK: movzbl ({{.*}})
28  %xor = xor i8 %0, -128   ; %0   ^ 0x80
29  %add = add i8 %xor, -127 ; %xor + 0x81
30  %1 = load i8*, i8** %ptr.addr, align 8
31
32  %arrayidx = getelementptr inbounds i8, i8* %1, i8 %add
33
34  %2 = load i8, i8* %arrayidx, align 1
35  ret i8 %2
36}
37
38