1; RUN: opt -S -passes=div-rem-pairs -mtriple=x86_64-unknown-unknown < %s | FileCheck %s 2 3; Check that DivRemPairs's optimizeDivRem() correctly propagates debug locations 4; of `%div` and `%rem` to new freeze, mul and sub instructions. 5 6define i128 @dont_hoist_urem(i128 %a, i128 %b) !dbg !5 { 7; CHECK-LABEL: define i128 @dont_hoist_urem( 8; CHECK-SAME: i128 [[A:%.*]], i128 [[B:%.*]]) 9; CHECK: entry: 10; CHECK-NEXT: [[A_FROZEN:%.*]] = freeze i128 [[A]], !dbg [[DBG8:![0-9]+]] 11; CHECK-NEXT: [[B_FROZEN:%.*]] = freeze i128 [[B]], !dbg [[DBG8]] 12; CHECK: if: 13; CHECK-NEXT: [[TMP0:%.*]] = mul i128 [[DIV:%.*]], [[B_FROZEN]], !dbg [[DBG11:![0-9]+]] 14; CHECK-NEXT: [[REM_DECOMPOSED:%.*]] = sub i128 [[A_FROZEN]], [[TMP0:%.*]], !dbg [[DBG11]] 15; CHECK: end: 16entry: 17 %div = udiv i128 %a, %b, !dbg !8 18 %cmp = icmp eq i128 %div, 42, !dbg !9 19 br i1 %cmp, label %if, label %end, !dbg !10 20 21if: ; preds = %entry 22 %rem = urem i128 %a, %b, !dbg !11 23 br label %end, !dbg !12 24 25end: ; preds = %if, %entry 26 %ret = phi i128 [ %rem, %if ], [ 3, %entry ], !dbg !13 27 ret i128 %ret, !dbg !14 28} 29 30!llvm.dbg.cu = !{!0} 31!llvm.debugify = !{!2, !3} 32!llvm.module.flags = !{!4} 33 34!0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug) 35!1 = !DIFile(filename: "frx_fry_.preserve.ll", directory: "/") 36!2 = !{i32 7} 37!3 = !{i32 0} 38!4 = !{i32 2, !"Debug Info Version", i32 3} 39!5 = distinct !DISubprogram(name: "dont_hoist_urem", linkageName: "dont_hoist_urem", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0) 40!6 = !DISubroutineType(types: !7) 41!7 = !{} 42!8 = !DILocation(line: 1, column: 1, scope: !5) 43!9 = !DILocation(line: 2, column: 1, scope: !5) 44!10 = !DILocation(line: 3, column: 1, scope: !5) 45!11 = !DILocation(line: 4, column: 1, scope: !5) 46!12 = !DILocation(line: 5, column: 1, scope: !5) 47!13 = !DILocation(line: 6, column: 1, scope: !5) 48!14 = !DILocation(line: 7, column: 1, scope: !5) 49; CHECK: [[DBG8]] = !DILocation(line: 1, 50; CHECK: [[DBG11]] = !DILocation(line: 4, 51