1; RUN: llc -mtriple=arm64_32-apple-ios8.0 %s -o - | FileCheck %s
2
3; We're provoking LocalStackSlotAllocation to create some shared frame bases
4; here: it wants multiple <fi#N> using instructions that can be satisfied by a
5; single base, but not within the addressing-mode.
6;
7; When that happens it's important that we don't mix our pointer sizes
8; (e.g. try to create an ldr from a w-register base).
9define i8 @test_register_wrangling() {
10; CHECK-LABEL: test_register_wrangling:
11; CHECK: add [[TMP:x[0-9]+]], sp,
12; CHECK: add x[[BASE:[0-9]+]], [[TMP]],
13; CHECK: ldrb {{w[0-9]+}}, [x[[BASE]], #1]
14; CHECK: ldrb {{w[0-9]+}}, [x[[BASE]]]
15
16  %var1 = alloca i8, i32 4100
17  %var3 = alloca i8
18  %dummy = alloca i8, i32 4100
19
20  %var1p1 = getelementptr i8, i8* %var1, i32 1
21  %val1 = load i8, i8* %var1
22  %val2 = load i8, i8* %var3
23
24  %sum = add i8 %val1, %val2
25  ret i8 %sum
26}
27