1 ; RUN: opt -S -passes=div-rem-pairs -mtriple=x86_64-unknown-unknown < %s | FileCheck %s
3 ; Check that DivRemPairs's optimizeDivRem() correctly propagates debug locations
4 ; of `%div` and `%rem` to new freeze, mul and sub instructions.
6 define 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:%.*]])
10 ; CHECK-NEXT: [[A_FROZEN:%.*]] = freeze i128 [[A]], !dbg [[DBG8:![0-9]+]]
11 ; CHECK-NEXT: [[B_FROZEN:%.*]] = freeze i128 [[B]], !dbg [[DBG8]]
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]]
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
22 %rem = urem i128 %a, %b, !dbg !11
23 br label %end, !dbg !12
25 end: ; preds = %if, %entry
26 %ret = phi i128 [ %rem, %if ], [ 3, %entry ], !dbg !13
27 ret i128 %ret, !dbg !14
31 !llvm.debugify = !{!2, !3}
32 !llvm.module.flags = !{!4}
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: "/")
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)
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,