1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -basic-aa -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
4 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
5 target triple = "x86_64-unknown-linux-gnu"
7 ; Check that everything still works when debuginfo is present, and that it is reasonably propagated.
9 ; void my_basic_memset(char* begin, char* end, char value) {
10 ; for( ; begin != end; ++begin)
14 ; CHECK: remark: <stdin>:4:1: Transformed loop-strided store in _Z15my_basic_memsetPcS_c function into a call to llvm.memset.p0i8.i64() intrinsic
16 define void @_Z15my_basic_memsetPcS_c(i8* %ptr, i8* %end, i8 %value) {
17 ; CHECK-LABEL: @_Z15my_basic_memsetPcS_c(
19 ; CHECK-NEXT: [[PTR2:%.*]] = ptrtoint i8* [[PTR:%.*]] to i64, !dbg [[DBG15:![0-9]+]]
20 ; CHECK-NEXT: [[END1:%.*]] = ptrtoint i8* [[END:%.*]] to i64, !dbg [[DBG15]]
21 ; CHECK-NEXT: [[CMP3:%.*]] = icmp eq i8* [[PTR]], [[END]], !dbg [[DBG15]]
22 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i1 [[CMP3]], metadata [[META9:![0-9]+]], metadata !DIExpression()), !dbg [[DBG15]]
23 ; CHECK-NEXT: br i1 [[CMP3]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]], !dbg [[DBG16:![0-9]+]]
24 ; CHECK: for.body.preheader:
25 ; CHECK-NEXT: [[TMP0:%.*]] = sub i64 [[END1]], [[PTR2]], !dbg [[DBG17:![0-9]+]]
26 ; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 1 [[PTR]], i8 [[VALUE:%.*]], i64 [[TMP0]], i1 false), !dbg [[DBG18:![0-9]+]]
27 ; CHECK-NEXT: br label [[FOR_BODY:%.*]], !dbg [[DBG17]]
29 ; CHECK-NEXT: [[PTR_ADDR_04:%.*]] = phi i8* [ [[INCDEC_PTR:%.*]], [[FOR_BODY]] ], [ [[PTR]], [[FOR_BODY_PREHEADER]] ], !dbg [[DBG19:![0-9]+]]
30 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i8* [[PTR_ADDR_04]], metadata [[META11:![0-9]+]], metadata !DIExpression()), !dbg [[DBG19]]
31 ; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, i8* [[PTR_ADDR_04]], i64 1, !dbg [[DBG20:![0-9]+]]
32 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i8* [[INCDEC_PTR]], metadata [[META13:![0-9]+]], metadata !DIExpression()), !dbg [[DBG20]]
33 ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[INCDEC_PTR]], [[END]], !dbg [[DBG21:![0-9]+]]
34 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i1 [[CMP]], metadata [[META14:![0-9]+]], metadata !DIExpression()), !dbg [[DBG21]]
35 ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]], !dbg [[DBG17]]
36 ; CHECK: for.end.loopexit:
37 ; CHECK-NEXT: br label [[FOR_END]], !dbg [[DBG22:![0-9]+]]
39 ; CHECK-NEXT: ret void, !dbg [[DBG22]]
42 %cmp3 = icmp eq i8* %ptr, %end
43 br i1 %cmp3, label %for.end, label %for.body
45 for.body: ; preds = %entry, %for.body
46 %ptr.addr.04 = phi i8* [ %incdec.ptr, %for.body ], [ %ptr, %entry ]
47 store i8 %value, i8* %ptr.addr.04, align 1
48 %incdec.ptr = getelementptr inbounds i8, i8* %ptr.addr.04, i64 1
49 %cmp = icmp eq i8* %incdec.ptr, %end
50 br i1 %cmp, label %for.end, label %for.body
52 for.end: ; preds = %for.body, %entry