| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -basicaa -debugify -loop-idiom -pass-remarks=loop-idiom -pass-remarks-analysis=loop-idiom -verify -verify-each -verify-dom-info -verify-loop-info < %s -S 2>&1 | FileCheck %s |
| |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| ; Check that everything still works when debuginfo is present, and that it is reasonably propagated. |
| |
| ; void my_basic_memset(char* begin, char* end, char value) { |
| ; for( ; begin != end; ++begin) |
| ; *begin = value; |
| ; } |
| |
| ; CHECK: remark: <stdin>:4:1: Transformed loop-strided store into a call to llvm.memset.p0i8.i64() function |
| |
| define void @_Z15my_basic_memsetPcS_c(i8* %ptr, i8* %end, i8 %value) { |
| ; CHECK-LABEL: @_Z15my_basic_memsetPcS_c( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[PTR1:%.*]] = ptrtoint i8* [[PTR:%.*]] to i64 |
| ; CHECK-NEXT: [[CMP3:%.*]] = icmp eq i8* [[PTR]], [[END:%.*]], !dbg !15 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i1 [[CMP3]], metadata !9, metadata !DIExpression()), !dbg !15 |
| ; CHECK-NEXT: br i1 [[CMP3]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]], !dbg !16 |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = sub i64 0, [[PTR1]], !dbg !17 |
| ; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, i8* [[END]], i64 [[TMP0]], !dbg !17 |
| ; CHECK-NEXT: [[SCEVGEP2:%.*]] = ptrtoint i8* [[SCEVGEP]] to i64 |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 1 [[PTR]], i8 [[VALUE:%.*]], i64 [[SCEVGEP2]], i1 false), !dbg !18 |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]], !dbg !17 |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[PTR_ADDR_04:%.*]] = phi i8* [ [[INCDEC_PTR:%.*]], [[FOR_BODY]] ], [ [[PTR]], [[FOR_BODY_PREHEADER]] ], !dbg !19 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i8* [[PTR_ADDR_04]], metadata !11, metadata !DIExpression()), !dbg !19 |
| ; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, i8* [[PTR_ADDR_04]], i64 1, !dbg !20 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i8* [[INCDEC_PTR]], metadata !13, metadata !DIExpression()), !dbg !20 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[INCDEC_PTR]], [[END]], !dbg !21 |
| ; CHECK-NEXT: call void @llvm.dbg.value(metadata i1 [[CMP]], metadata !14, metadata !DIExpression()), !dbg !21 |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]], !dbg !17 |
| ; CHECK: for.end.loopexit: |
| ; CHECK-NEXT: br label [[FOR_END]], !dbg !22 |
| ; CHECK: for.end: |
| ; CHECK-NEXT: ret void, !dbg !22 |
| ; |
| entry: |
| %cmp3 = icmp eq i8* %ptr, %end |
| br i1 %cmp3, label %for.end, label %for.body |
| |
| for.body: ; preds = %entry, %for.body |
| %ptr.addr.04 = phi i8* [ %incdec.ptr, %for.body ], [ %ptr, %entry ] |
| store i8 %value, i8* %ptr.addr.04, align 1 |
| %incdec.ptr = getelementptr inbounds i8, i8* %ptr.addr.04, i64 1 |
| %cmp = icmp eq i8* %incdec.ptr, %end |
| br i1 %cmp, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body, %entry |
| ret void |
| } |