# RUN: llc %s --start-before=branch-folder --stop-after=branch-folder -o - \ # RUN: | FileCheck %s --implicit-check-not=DBG_PHI ## Common instructions are hoisted. Check that trailing debug instructions in ## the range are also hoisted, and don't cause a crash. ## ## Note the MIR doesn't match the IR as it's modified from: ## /home/och/dev/llvm-project/llvm/test/DebugInfo/X86/branch-folder-dbg.mir # CHECK: bb.0 # CHECK: CALL64pcrel32 @f, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax ## --- Start splice from bb.2.if.else (and debug instructions from bb.1.if.then) --- # CHECK-NEXT: $edi = MOV32r0 implicit-def dead $eflags, debug-location !DILocation(line: 0, scope: ![[#]]) # CHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[#]], !DIExpression(), debug-location # CHECK-NEXT: DBG_VALUE $noreg, $noreg, ![[#]], !DIExpression(), debug-location ## --- End splice ------------------------------------------------------------------ # CHECK-NEXT: TEST64rr killed renamable $rax, renamable $rax, implicit-def $eflags # CHECK-NEXT: JCC_1 %bb.2, 8, implicit $eflags # CHECK: bb.1 --- | target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128" target triple = "x86_64-unknown-linux-gnu" declare dso_local noundef i64 @f() local_unnamed_addr define dso_local noundef i32 @g() local_unnamed_addr !dbg !7 { %call = tail call noundef i64 @f() %cmp1 = icmp sgt i64 0, %call %conv2 = trunc i64 0 to i32 br i1 %cmp1, label %if.then, label %if.else if.then: ; preds = %0 tail call void @_Z3fooii(i32 noundef %conv2, i32 noundef 0), !dbg !14 br label %if.end, !dbg !15 if.else: ; preds = %0 tail call void @_Z3barii(i32 noundef %conv2, i32 noundef 1), !dbg !16 br label %if.end, !dbg !17 if.end: ; preds = %if.else, %if.then ret i32 2 } declare void @_Z3fooii(i32 noundef, i32 noundef) local_unnamed_addr declare void @_Z3barii(i32 noundef, i32 noundef) local_unnamed_addr !llvm.module.flags = !{!0, !1} !llvm.ident = !{!2} !llvm.dbg.cu = !{!3} !llvm.debugify = !{!5, !6} !0 = !{i32 7, !"Dwarf Version", i32 5} !1 = !{i32 2, !"Debug Info Version", i32 3} !2 = !{!"clang version 21.0.0"} !3 = distinct !DICompileUnit(language: DW_LANG_C, file: !4, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug) !4 = !DIFile(filename: "test.nodbg.ll", directory: "/") !5 = !{i32 15} !6 = !{i32 7} !7 = distinct !DISubprogram(name: "g", linkageName: "g", scope: null, file: !4, line: 1, type: !8, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !3, retainedNodes: !10) !8 = !DISubroutineType(types: !9) !9 = !{} !10 = !{!11} !11 = !DILocalVariable(name: "1", scope: !7, file: !4, line: 3, type: !12) !12 = !DIBasicType(name: "ty64", size: 64, encoding: DW_ATE_unsigned) !13 = !DILocation(line: 3, column: 1, scope: !7) !14 = !DILocation(line: 9, column: 1, scope: !7) !15 = !DILocation(line: 10, column: 1, scope: !7) !16 = !DILocation(line: 11, column: 1, scope: !7) !17 = !DILocation(line: 12, column: 1, scope: !7) ... --- name: g tracksRegLiveness: true isSSA: false body: | bb.0 (%ir-block.0): successors: %bb.1(0x40000000), %bb.2(0x40000000) frame-setup PUSH64r undef $rax, implicit-def $rsp, implicit $rsp frame-setup CFI_INSTRUCTION def_cfa_offset 16 CALL64pcrel32 @f, csr_64, implicit $rsp, implicit $ssp, implicit-def $rsp, implicit-def $ssp, implicit-def $rax TEST64rr killed renamable $rax, renamable $rax, implicit-def $eflags JCC_1 %bb.2, 9, implicit killed $eflags JMP_1 %bb.1 bb.1.if.then: successors: %bb.3(0x80000000) $edi = MOV32r0 implicit-def dead $eflags, debug-location !14 DBG_VALUE $edi, $noreg, !11, !DIExpression(), debug-location !13 bb.3.if.end: $eax = MOV32ri 2 $rcx = frame-destroy POP64r implicit-def $rsp, implicit $rsp frame-destroy CFI_INSTRUCTION def_cfa_offset 8 RET 0, $eax bb.2.if.else: successors: %bb.3(0x80000000) $edi = MOV32r0 implicit-def dead $eflags, debug-location !16 DBG_VALUE $edi, $noreg, !11, !DIExpression(), debug-location !13 CALL64pcrel32 target-flags(x86-plt) @_Z3barii, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit killed $edi, implicit-def $rsp, implicit-def $ssp, debug-location !16 JMP_1 %bb.3, debug-location !15 ...