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