1# RUN: llc %s -o - -experimental-debug-variable-locations \ 2# RUN: -start-before=phi-node-elimination -stop-after=virtregrewriter \ 3# RUN: -mtriple x86_64-unknown-unknown \ 4# RUN: | FileCheck %s 5# 6# Test that when a load gets folded into an instruction (the CVTTSS2SIrr below) 7# that the debug-instr-number is preserved, with a substitution. 8# 9# CHECK: debugValueSubstitutions: 10# CHECK-NEXT: - { srcinst: 1, srcop: 0, dstinst: 2, dstop: 0, subreg: 0 } 11# CHECK-LABEL: bb.1.sw.bb: 12# CHECK: renamable $eax = nofpexcept CVTTSS2SIrm %stack.0, 13# CHECK-SAME: debug-instr-number 2 :: (load (s32) from %stack.0) 14--- | 15 ; ModuleID = 'lol.ll' 16 source_filename = "reduced.ll" 17 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" 18 target triple = "x86_64-unknown-linux-gnu" 19 20 define i32 @foo(i32 %i, float %f) local_unnamed_addr { 21 if.then: 22 %call = tail call i32 (i32, ...) undef(i32 %i) 23 %cond = icmp eq i32 %call, 1 24 br i1 %cond, label %sw.bb, label %sw.epilog 25 26 sw.bb: ; preds = %if.then 27 %conv = fptosi float %f to i8 28 call void @llvm.dbg.value(metadata i8 %conv, metadata !6, metadata !DIExpression()), !dbg !17 29 %tobool.not = icmp eq i8 %conv, 0 30 br i1 %tobool.not, label %if.end, label %sw.epilog 31 32 if.end: ; preds = %sw.bb 33 tail call void (...) undef() 34 br label %sw.epilog 35 36 sw.epilog: ; preds = %if.then, %if.end, %sw.bb 37 ret i32 undef 38 } 39 40 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn 41 declare void @llvm.dbg.value(metadata, metadata, metadata) #0 42 43 attributes #0 = { nofree nosync nounwind readnone speculatable willreturn } 44 45 !llvm.dbg.cu = !{!0} 46 !llvm.module.flags = !{!2, !3, !4, !5} 47 48 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) 49 !1 = !DIFile(filename: "/tmp/test.c", directory: ".") 50 !2 = !{i32 7, !"Dwarf Version", i32 4} 51 !3 = !{i32 2, !"Debug Info Version", i32 3} 52 !4 = !{i32 1, !"wchar_size", i32 4} 53 !5 = !{i32 7, !"uwtable", i32 1} 54 !6 = !DILocalVariable(name: "b", scope: !7, file: !8, line: 15, type: !16) 55 !7 = distinct !DISubprogram(name: "foo", scope: !8, file: !8, line: 8, type: !9, scopeLine: 9, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !15) 56 !8 = !DIFile(filename: "/tmp/test.c", directory: "") 57 !9 = !DISubroutineType(types: !10) 58 !10 = !{!11, !11, !12, !13} 59 !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 60 !12 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) 61 !13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64) 62 !14 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed) 63 !15 = !{} 64 !16 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) 65 !17 = !DILocation(line: 0, scope: !7) 66 67... 68--- 69name: foo 70tracksRegLiveness: true 71debugInstrRef: true 72registers: 73 - { id: 0, class: gr32, preferred-register: '' } 74 - { id: 1, class: fr32, preferred-register: '' } 75 - { id: 2, class: gr32, preferred-register: '' } 76 - { id: 3, class: gr8, preferred-register: '' } 77 - { id: 4, class: gr64, preferred-register: '' } 78 - { id: 5, class: gr32, preferred-register: '' } 79 - { id: 6, class: gr32, preferred-register: '' } 80 - { id: 7, class: gr32, preferred-register: '' } 81 - { id: 8, class: gr8, preferred-register: '' } 82 - { id: 9, class: gr32, preferred-register: '' } 83 - { id: 10, class: gr8, preferred-register: '' } 84 - { id: 11, class: gr64, preferred-register: '' } 85 - { id: 12, class: gr32, preferred-register: '' } 86liveins: 87 - { reg: '$edi', virtual-reg: '%0' } 88 - { reg: '$xmm0', virtual-reg: '%1' } 89frameInfo: 90 adjustsStack: true 91 hasCalls: true 92body: | 93 bb.0.if.then: 94 successors: %bb.1(0x40000000), %bb.3(0x40000000) 95 liveins: $edi, $xmm0 96 97 %1:fr32 = COPY killed $xmm0 98 %0:gr32 = COPY killed $edi 99 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp 100 %2:gr32 = MOV32r0 implicit-def dead $eflags 101 %3:gr8 = COPY killed %2.sub_8bit 102 $edi = COPY killed %0 103 $al = COPY killed %3 104 CALL64r undef %4:gr64, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit killed $al, implicit-def $rsp, implicit-def $ssp, implicit-def $eax 105 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp 106 %5:gr32 = COPY killed $eax 107 CMP32ri8 killed %5, 1, implicit-def $eflags 108 JCC_1 %bb.3, 5, implicit killed $eflags 109 JMP_1 %bb.1 110 111 bb.1.sw.bb: 112 successors: %bb.2(0x30000000), %bb.3(0x50000000) 113 114 %7:gr32 = nofpexcept CVTTSS2SIrr killed %1, implicit $mxcsr, debug-instr-number 1 115 %8:gr8 = COPY killed %7.sub_8bit 116 DBG_INSTR_REF !6, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(2, 0), debug-location !17 117 TEST8rr killed %8, %8, implicit-def $eflags 118 JCC_1 %bb.3, 5, implicit killed $eflags 119 JMP_1 %bb.2 120 121 bb.2.if.end: 122 successors: %bb.3(0x80000000) 123 124 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp 125 %9:gr32 = MOV32r0 implicit-def dead $eflags 126 %10:gr8 = COPY killed %9.sub_8bit 127 $al = COPY killed %10 128 CALL64r undef %11:gr64, csr_64, implicit $rsp, implicit $ssp, implicit killed $al, implicit-def $rsp, implicit-def $ssp 129 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp 130 131 bb.3.sw.epilog: 132 RET 0, undef $eax 133 134... 135