1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s
4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
6 ; Don't delete the memcpy in %if.then, even though it depends on an instruction
7 ; which will be deleted.
9 define void @foo(i1 %c, ptr %d, ptr %e, ptr %f) {
12 ; CHECK-NEXT: [[TMP:%.*]] = alloca [50 x i8], align 8
13 ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i8, ptr [[TMP]], i64 1
14 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr nonnull [[D:%.*]], i8 0, i64 10, i1 false)
15 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[TMP]], i8 0, i64 11, i1 false)
16 ; CHECK-NEXT: br i1 [[C:%.*]], label [[IF_THEN:%.*]], label [[EXIT:%.*]]
18 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[F:%.*]], i8 0, i64 11, i1 false)
19 ; CHECK-NEXT: br label [[EXIT]]
21 ; CHECK-NEXT: ret void
24 %tmp = alloca [50 x i8], align 8
25 %tmp1 = getelementptr inbounds i8, ptr %tmp, i64 1
26 call void @llvm.memset.p0.i64(ptr nonnull %d, i8 0, i64 10, i1 false)
27 store i8 0, ptr %tmp, align 8
28 call void @llvm.memcpy.p0.p0.i64(ptr nonnull %tmp1, ptr nonnull %d, i64 10, i1 false)
29 br i1 %c, label %if.then, label %exit
32 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %f, ptr nonnull align 8 %tmp, i64 30, i1 false)
39 declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1)
40 declare void @llvm.memset.p0.i64(ptr, i8, i64, i1)