1 ; RUN: opt -passes='sroa,loop(loop-rotate)' %s | opt -aa-pipeline=basic-aa -passes='require<aa>,require<target-ir>,require<scalar-evolution>,require<opt-remark-emit>,loop-mssa(licm)' -S | FileCheck %s
2 ; RUN: opt -passes='sroa,loop(loop-rotate),loop-mssa(licm)' -verify-memoryssa -S < %s | FileCheck %s
3 ; The objects *p and *q are aliased to each other, but even though *q is
4 ; volatile, *p can be considered invariant in the loop. Check if it is moved
6 ; CHECK: load i32, ptr %p
8 ; CHECK: load volatile i32, ptr %q
10 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"
12 ; Function Attrs: nounwind uwtable
13 define i32 @foo(ptr dereferenceable(4) nonnull %p, ptr %q, i32 %n) #0 {
15 %p.addr = alloca ptr, align 8
16 %q.addr = alloca ptr, align 8
17 %n.addr = alloca i32, align 4
18 %i = alloca i32, align 4
19 %s = alloca i32, align 4
20 store ptr %p, ptr %p.addr, align 8
21 store ptr %q, ptr %q.addr, align 8
22 store i32 %n, ptr %n.addr, align 4
23 store i32 0, ptr %s, align 4
24 store i32 0, ptr %i, align 4
27 for.cond: ; preds = %for.inc, %entry
28 %0 = load i32, ptr %i, align 4
29 %1 = load i32, ptr %n.addr, align 4
30 %cmp = icmp slt i32 %0, %1
31 br i1 %cmp, label %for.body, label %for.end
33 for.body: ; preds = %for.cond
34 %2 = load ptr, ptr %p.addr, align 8
35 %3 = load i32, ptr %2, align 4
36 %4 = load ptr, ptr %q.addr, align 8
37 %5 = load volatile i32, ptr %4, align 4
38 %add = add nsw i32 %3, %5
39 %6 = load i32, ptr %s, align 4
40 %add1 = add nsw i32 %6, %add
41 store i32 %add1, ptr %s, align 4
44 for.inc: ; preds = %for.body
45 %7 = load i32, ptr %i, align 4
46 %inc = add nsw i32 %7, 1
47 store i32 %inc, ptr %i, align 4
50 for.end: ; preds = %for.cond
51 %8 = load i32, ptr %s, align 4
55 attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }