1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s 3 4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 5 6; Don't delete the memcpy in %if.then, even though it depends on an instruction 7; which will be deleted. 8 9define void @foo(i1 %c, ptr %d, ptr %e, ptr %f) { 10; CHECK-LABEL: @foo( 11; CHECK-NEXT: entry: 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:%.*]] 17; CHECK: if.then: 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]] 20; CHECK: exit: 21; CHECK-NEXT: ret void 22; 23entry: 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 30 31if.then: 32 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %f, ptr nonnull align 8 %tmp, i64 30, i1 false) 33 br label %exit 34 35exit: 36 ret void 37} 38 39declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1) 40declare void @llvm.memset.p0.i64(ptr, i8, i64, i1) 41