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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 %s5#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, 124 br i1 %cond, label %sw.bb, label %sw.epilog25 26 sw.bb: ; preds = %if.then27 %conv = fptosi float %f to i828 call void @llvm.dbg.value(metadata i8 %conv, metadata !6, metadata !DIExpression()), !dbg !1729 %tobool.not = icmp eq i8 %conv, 030 br i1 %tobool.not, label %if.end, label %sw.epilog31 32 if.end: ; preds = %sw.bb33 tail call void (...) undef()34 br label %sw.epilog35 36 sw.epilog: ; preds = %if.then, %if.end, %sw.bb37 ret i32 undef38 }39 40 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn41 declare void @llvm.dbg.value(metadata, metadata, metadata) #042 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: foo70tracksRegLiveness: true71debugInstrRef: true72registers: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: true91 hasCalls: true92body: |93 bb.0.if.then:94 successors: %bb.1(0x40000000), %bb.3(0x40000000)95 liveins: $edi, $xmm096 97 %1:fr32 = COPY killed $xmm098 %0:gr32 = COPY killed $edi99 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp100 %2:gr32 = MOV32r0 implicit-def dead $eflags101 %3:gr8 = COPY killed %2.sub_8bit102 $edi = COPY killed %0103 $al = COPY killed %3104 CALL64r undef %4:gr64, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit killed $al, implicit-def $rsp, implicit-def $ssp, implicit-def $eax105 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp106 %5:gr32 = COPY killed $eax107 CMP32ri8 killed %5, 1, implicit-def $eflags108 JCC_1 %bb.3, 5, implicit killed $eflags109 JMP_1 %bb.1110 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 1115 %8:gr8 = COPY killed %7.sub_8bit116 DBG_INSTR_REF !6, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(2, 0), debug-location !17117 TEST8rr killed %8, %8, implicit-def $eflags118 JCC_1 %bb.3, 5, implicit killed $eflags119 JMP_1 %bb.2120 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 $ssp125 %9:gr32 = MOV32r0 implicit-def dead $eflags126 %10:gr8 = COPY killed %9.sub_8bit127 $al = COPY killed %10128 CALL64r undef %11:gr64, csr_64, implicit $rsp, implicit $ssp, implicit killed $al, implicit-def $rsp, implicit-def $ssp129 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp130 131 bb.3.sw.epilog:132 RET 0, undef $eax133 134...135