43 lines
1.4 KiB
LLVM
43 lines
1.4 KiB
LLVM
; RUN: llc -mtriple=arm64-apple-ios -mattr=+strict-align < %s | FileCheck %s
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; Small (16 bytes here) unaligned memcpy() should be a function call if
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; strict-alignment is turned on.
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define void @t0(i8* %out, i8* %in) {
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; CHECK-LABEL: t0:
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; CHECK: orr w2, wzr, #0x10
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; CHECK-NEXT: bl _memcpy
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entry:
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 16, i1 false)
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ret void
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}
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; Small (16 bytes here) aligned memcpy() should be inlined even if
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; strict-alignment is turned on.
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define void @t1(i8* align 8 %out, i8* align 8 %in) {
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; CHECK-LABEL: t1:
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; CHECK: ldp x{{[0-9]+}}, x{{[0-9]+}}, [x1]
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; CHECK-NEXT: stp x{{[0-9]+}}, x{{[0-9]+}}, [x0]
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entry:
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 %out, i8* align 8 %in, i64 16, i1 false)
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ret void
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}
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; Tiny (4 bytes here) unaligned memcpy() should be inlined with byte sized
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; loads and stores if strict-alignment is turned on.
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define void @t2(i8* %out, i8* %in) {
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; CHECK-LABEL: t2:
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; CHECK: ldrb w{{[0-9]+}}, [x1, #3]
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; CHECK-NEXT: ldrb w{{[0-9]+}}, [x1, #2]
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; CHECK-NEXT: ldrb w{{[0-9]+}}, [x1, #1]
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; CHECK-NEXT: ldrb w{{[0-9]+}}, [x1]
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; CHECK-NEXT: strb w{{[0-9]+}}, [x0, #3]
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; CHECK-NEXT: strb w{{[0-9]+}}, [x0, #2]
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; CHECK-NEXT: strb w{{[0-9]+}}, [x0, #1]
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; CHECK-NEXT: strb w{{[0-9]+}}, [x0]
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entry:
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %out, i8* %in, i64 4, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i1)
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