1; RUN: llc < %s -mtriple=xcore | FileCheck %s 2 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_4 7entry: 8 %0 = shl i32 %n, 2 9 call void @llvm.memcpy.p0.p0.i32(ptr align 4 %dst, ptr align 4 %src, i32 %0, i1 false) 10 ret void 11} 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 memcpy 17entry: 18 call void @llvm.memcpy.p0.p0.i32(ptr align 4 %dst, ptr align 4 %src, i32 %n, i1 false) 19 ret void 20} 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 memcpy 26entry: 27 %0 = shl i32 %n, 2 28 call void @llvm.memcpy.p0.p0.i32(ptr align 2 %dst, ptr align 2 %src, i32 %0, i1 false) 29 ret void 30} 31 32declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind 33