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1; RUN: llc < %s -mtriple=xcore | FileCheck %s2 3; Optimize memcpy to __memcpy_4 if src, dst and size are all 4 byte aligned.4define void @f1(ptr %dst, ptr %src, i32 %n) nounwind {5; CHECK-LABEL: f1:6; CHECK: bl __memcpy_47entry:8 %0 = shl i32 %n, 29 call void @llvm.memcpy.p0.p0.i32(ptr align 4 %dst, ptr align 4 %src, i32 %0, i1 false)10 ret void11}12 13; Can't optimize - size is not a multiple of 4.14define void @f2(ptr %dst, ptr %src, i32 %n) nounwind {15; CHECK-LABEL: f2:16; CHECK: bl memcpy17entry:18 call void @llvm.memcpy.p0.p0.i32(ptr align 4 %dst, ptr align 4 %src, i32 %n, i1 false)19 ret void20}21 22; Can't optimize - alignment is not a multiple of 4.23define void @f3(ptr %dst, ptr %src, i32 %n) nounwind {24; CHECK-LABEL: f3:25; CHECK: bl memcpy26entry:27 %0 = shl i32 %n, 228 call void @llvm.memcpy.p0.p0.i32(ptr align 2 %dst, ptr align 2 %src, i32 %0, i1 false)29 ret void30}31 32declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind33