1 ; RUN: opt -basicaa -sroa -loop-rotate -licm -S < %s | FileCheck %s
2 ; The objects *p and *q are aliased to each other, but even though *q is
3 ; volatile, *p can be considered invariant in the loop. Check if it is moved
7 ; CHECK: load volatile i32* %q
9 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
11 ; Function Attrs: nounwind uwtable
12 define i32 @foo(i32* %p, i32* %q, i32 %n) #0 {
14 %p.addr = alloca i32*, align 8
15 %q.addr = alloca i32*, align 8
16 %n.addr = alloca i32, align 4
17 %i = alloca i32, align 4
18 %s = alloca i32, align 4
19 store i32* %p, i32** %p.addr, align 8
20 store i32* %q, i32** %q.addr, align 8
21 store i32 %n, i32* %n.addr, align 4
22 store i32 0, i32* %s, align 4
23 store i32 0, i32* %i, align 4
26 for.cond: ; preds = %for.inc, %entry
27 %0 = load i32* %i, align 4
28 %1 = load i32* %n.addr, align 4
29 %cmp = icmp slt i32 %0, %1
30 br i1 %cmp, label %for.body, label %for.end
32 for.body: ; preds = %for.cond
33 %2 = load i32** %p.addr, align 8
34 %3 = load i32* %2, align 4
35 %4 = load i32** %q.addr, align 8
36 %5 = load volatile i32* %4, align 4
37 %add = add nsw i32 %3, %5
38 %6 = load i32* %s, align 4
39 %add1 = add nsw i32 %6, %add
40 store i32 %add1, i32* %s, align 4
43 for.inc: ; preds = %for.body
44 %7 = load i32* %i, align 4
45 %inc = add nsw i32 %7, 1
46 store i32 %inc, i32* %i, align 4
49 for.end: ; preds = %for.cond
50 %8 = load i32* %s, align 4
54 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }