| ; RUN: llc -mcpu=cyclone < %s | FileCheck %s |
| target datalayout = "e-i64:64-n32:64-S128" |
| target triple = "arm64-apple-ios" |
| |
| %"struct.SU" = type { i32, %"struct.SU"*, i32*, i32, i32, %"struct.BO", i32, [5 x i8] } |
| %"struct.BO" = type { %"struct.RE" } |
| |
| %"struct.RE" = type { i32, i32, i32, i32 } |
| |
| ; This is a read-modify-write of some bifields combined into an i48. It gets |
| ; legalized into i32 and i16 accesses. Only a single store of zero to the low |
| ; i32 part should be live. |
| |
| ; CHECK-LABEL: test: |
| ; CHECK-NOT: ldr |
| ; CHECK: str wzr |
| ; CHECK-NOT: str |
| define void @test(%"struct.SU"* nocapture %su) { |
| entry: |
| %r1 = getelementptr inbounds %"struct.SU", %"struct.SU"* %su, i64 1, i32 5 |
| %r2 = bitcast %"struct.BO"* %r1 to i48* |
| %r3 = load i48, i48* %r2, align 8 |
| %r4 = and i48 %r3, -4294967296 |
| %r5 = or i48 0, %r4 |
| store i48 %r5, i48* %r2, align 8 |
| |
| ret void |
| } |
