xref: /llvm-project/llvm/test/CodeGen/AArch64/aarch64-loop-gep-opt.ll (revision ff302f850242b7f5e1fc48235471b8273c421236)
1; RUN: llc -O3 -aarch64-enable-gep-opt=true  -print-after=codegenprepare -mcpu=cortex-a53 < %s >%t 2>&1 && FileCheck <%t %s
2; REQUIRES: asserts
3target triple = "aarch64--linux-android"
4
5%typeD = type { i32, i32, [256 x i32], [257 x i32] }
6
7; Function Attrs: noreturn nounwind uwtable
8define i32 @test1(ptr nocapture %s) {
9entry:
10; CHECK-LABEL: entry:
11; CHECK:    %uglygep = getelementptr i8, ptr %s, i64 1032
12; CHECK:    br label %do.body.i
13
14
15  %k0 = getelementptr inbounds %typeD, ptr %s, i64 0, i32 1
16  %.pre = load i32, ptr %s, align 4
17  br label %do.body.i
18
19do.body.i:
20; CHECK-LABEL: do.body.i:
21; CHECK:          %uglygep2 = getelementptr i8, ptr %uglygep, i64 %2
22; CHECK-NOT:      %uglygep2 = getelementptr i8, ptr %uglygep, i64 1032
23
24
25  %0 = phi i32 [ 256, %entry ], [ %.be, %do.body.i.backedge ]
26  %1 = phi i32 [ 0, %entry ], [ %.be6, %do.body.i.backedge ]
27  %add.i = add nsw i32 %1, %0
28  %shr.i = ashr i32 %add.i, 1
29  %idxprom.i = sext i32 %shr.i to i64
30  %arrayidx.i = getelementptr inbounds %typeD, ptr %s, i64 0, i32 3, i64 %idxprom.i
31  %2 = load i32, ptr %arrayidx.i, align 4
32  %cmp.i = icmp sle i32 %2, %.pre
33  %na.1.i = select i1 %cmp.i, i32 %0, i32 %shr.i
34  %nb.1.i = select i1 %cmp.i, i32 %shr.i, i32 %1
35  %sub.i = sub nsw i32 %na.1.i, %nb.1.i
36  %cmp1.i = icmp eq i32 %sub.i, 1
37  br i1 %cmp1.i, label %fooo.exit, label %do.body.i.backedge
38
39do.body.i.backedge:
40  %.be = phi i32 [ %na.1.i, %do.body.i ], [ 256, %fooo.exit ]
41  %.be6 = phi i32 [ %nb.1.i, %do.body.i ], [ 0, %fooo.exit ]
42  br label %do.body.i
43
44fooo.exit:                              ; preds = %do.body.i
45  store i32 %nb.1.i, ptr %k0, align 4
46  br label %do.body.i.backedge
47}
48
49