File: memcpy-no-inline.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; RUN: llc -mtriple=thumbv7m-arm-none-eabi -mcpu=cortex-m3 < %s | FileCheck %s

%struct.mystruct = type { [31 x i8] }

@.str = private unnamed_addr constant [31 x i8] c"012345678901234567890123456789\00", align 1
@.str.1 = private unnamed_addr constant [21 x i8] c"01234567890123456789\00", align 1

@myglobal = common global %struct.mystruct zeroinitializer, align 1

define void @foo() #0 {
entry:
; CHECK-LABEL: foo:
; CHECK:      __aeabi_memcpy
; CHECK-NOT:  ldm
  %mystring = alloca [31 x i8], align 1
  call void @llvm.memcpy.p0.p0.i32(ptr align 1 %mystring, ptr align 1 @.str, i32 31, i1 false)
  ret void
}

define void @bar() #0 {
entry:
; CHECK-LABEL: bar:
; CHECK-NOT:   __aeabi_memcpy
  %mystring = alloca [31 x i8], align 1
  call void @llvm.memcpy.p0.p0.i32(ptr align 1 %mystring, ptr align 1 @.str.1, i32 21, i1 false)
  ret void
}

declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture readonly, i32, i1) #1

attributes #0 = { minsize noinline nounwind optsize }