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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; 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
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 in _Z15my_basic_memsetPcS_c function into a call to llvm.memset.p0i8.i64() intrinsic
define void @_Z15my_basic_memsetPcS_c(i8* %ptr, i8* %end, i8 %value) {
; CHECK-LABEL: @_Z15my_basic_memsetPcS_c(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[PTR2:%.*]] = ptrtoint i8* [[PTR:%.*]] to i64, !dbg [[DBG15:![0-9]+]]
; CHECK-NEXT: [[END1:%.*]] = ptrtoint i8* [[END:%.*]] to i64, !dbg [[DBG15]]
; CHECK-NEXT: [[CMP3:%.*]] = icmp eq i8* [[PTR]], [[END]], !dbg [[DBG15]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i1 [[CMP3]], metadata [[META9:![0-9]+]], metadata !DIExpression()), !dbg [[DBG15]]
; CHECK-NEXT: br i1 [[CMP3]], label [[FOR_END:%.*]], label [[FOR_BODY_PREHEADER:%.*]], !dbg [[DBG16:![0-9]+]]
; CHECK: for.body.preheader:
; CHECK-NEXT: [[TMP0:%.*]] = sub i64 [[END1]], [[PTR2]], !dbg [[DBG17:![0-9]+]]
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 1 [[PTR]], i8 [[VALUE:%.*]], i64 [[TMP0]], i1 false), !dbg [[DBG18:![0-9]+]]
; CHECK-NEXT: br label [[FOR_BODY:%.*]], !dbg [[DBG17]]
; CHECK: for.body:
; CHECK-NEXT: [[PTR_ADDR_04:%.*]] = phi i8* [ [[INCDEC_PTR:%.*]], [[FOR_BODY]] ], [ [[PTR]], [[FOR_BODY_PREHEADER]] ], !dbg [[DBG19:![0-9]+]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i8* [[PTR_ADDR_04]], metadata [[META11:![0-9]+]], metadata !DIExpression()), !dbg [[DBG19]]
; CHECK-NEXT: [[INCDEC_PTR]] = getelementptr inbounds i8, i8* [[PTR_ADDR_04]], i64 1, !dbg [[DBG20:![0-9]+]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i8* [[INCDEC_PTR]], metadata [[META13:![0-9]+]], metadata !DIExpression()), !dbg [[DBG20]]
; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8* [[INCDEC_PTR]], [[END]], !dbg [[DBG21:![0-9]+]]
; CHECK-NEXT: call void @llvm.dbg.value(metadata i1 [[CMP]], metadata [[META14:![0-9]+]], metadata !DIExpression()), !dbg [[DBG21]]
; CHECK-NEXT: br i1 [[CMP]], label [[FOR_END_LOOPEXIT:%.*]], label [[FOR_BODY]], !dbg [[DBG17]]
; CHECK: for.end.loopexit:
; CHECK-NEXT: br label [[FOR_END]], !dbg [[DBG22:![0-9]+]]
; CHECK: for.end:
; CHECK-NEXT: ret void, !dbg [[DBG22]]
;
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
}
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