27 lines
928 B
LLVM
27 lines
928 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc -mcpu=cyclone < %s | FileCheck %s
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target datalayout = "e-i64:64-n32:64-S128"
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target triple = "arm64-apple-ios"
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%"struct.SU" = type { i32, ptr, ptr, i32, i32, %"struct.BO", i32, [5 x i8] }
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%"struct.BO" = type { %"struct.RE" }
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%"struct.RE" = type { i32, i32, i32, i32 }
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; This is a read-modify-write of some bifields combined into an i48. It gets
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; legalized into i32 and i16 accesses. Only a single store of zero to the low
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; i32 part should be live.
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define void @test(ptr nocapture %su) {
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; CHECK-LABEL: test:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: str wzr, [x0, #96]
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; CHECK-NEXT: ret
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entry:
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%r1 = getelementptr inbounds %"struct.SU", ptr %su, i64 1, i32 5
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%r3 = load i48, ptr %r1, align 8
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%r4 = and i48 %r3, -4294967296
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%r5 = or i48 0, %r4
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store i48 %r5, ptr %r1, align 8
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ret void
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}
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