File: memcpy-const-vol-struct.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; RUN: llc -mtriple=armv7-arm-none-eabi -o - %s | FileCheck %s

%struct.sMyType = type { i32 }

@val = hidden constant %struct.sMyType zeroinitializer, align 4
@v = internal global %struct.sMyType zeroinitializer, align 4

define hidden void @InitVal() local_unnamed_addr {
entry:
  call void @llvm.memcpy.p0.p0.i32(ptr align 4 @v, ptr align 4 @val, i32 4, i1 true)
; The last argument is the isvolatile argument. This is a volatile memcpy.
; Test that the memcpy expansion does not optimize away the load.
; CHECK: ldr
; CHECK: str
  ret void
}

declare void @llvm.memcpy.p0.p0.i32(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i32, i1 immarg)