| # RUN: llc %s -o - -experimental-debug-variable-locations \ |
| # RUN: -start-before=phi-node-elimination -stop-after=virtregrewriter \ |
| # RUN: -mtriple x86_64-unknown-unknown \ |
| # RUN: | FileCheck %s |
| # |
| # Test that when a load gets folded into an instruction (the CVTTSS2SIrr below) |
| # that the debug-instr-number is preserved, with a substitution. |
| # |
| # CHECK: debugValueSubstitutions: |
| # CHECK-NEXT: - { srcinst: 1, srcop: 0, dstinst: 2, dstop: 0, subreg: 0 } |
| # CHECK-LABEL: bb.1.sw.bb: |
| # CHECK: renamable $eax = nofpexcept CVTTSS2SIrm %stack.0, |
| # CHECK-SAME: debug-instr-number 2 :: (load (s32) from %stack.0) |
| --- | |
| ; ModuleID = 'lol.ll' |
| source_filename = "reduced.ll" |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i32 @foo(i32 %i, float %f) local_unnamed_addr { |
| if.then: |
| %call = tail call i32 (i32, ...) undef(i32 %i) |
| %cond = icmp eq i32 %call, 1 |
| br i1 %cond, label %sw.bb, label %sw.epilog |
| |
| sw.bb: ; preds = %if.then |
| %conv = fptosi float %f to i8 |
| call void @llvm.dbg.value(metadata i8 %conv, metadata !6, metadata !DIExpression()), !dbg !17 |
| %tobool.not = icmp eq i8 %conv, 0 |
| br i1 %tobool.not, label %if.end, label %sw.epilog |
| |
| if.end: ; preds = %sw.bb |
| tail call void (...) undef() |
| br label %sw.epilog |
| |
| sw.epilog: ; preds = %if.then, %if.end, %sw.bb |
| ret i32 undef |
| } |
| |
| ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #0 |
| |
| attributes #0 = { nofree nosync nounwind readnone speculatable willreturn } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!2, !3, !4, !5} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) |
| !1 = !DIFile(filename: "/tmp/test.c", directory: ".") |
| !2 = !{i32 7, !"Dwarf Version", i32 4} |
| !3 = !{i32 2, !"Debug Info Version", i32 3} |
| !4 = !{i32 1, !"wchar_size", i32 4} |
| !5 = !{i32 7, !"uwtable", i32 1} |
| !6 = !DILocalVariable(name: "b", scope: !7, file: !8, line: 15, type: !16) |
| !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) |
| !8 = !DIFile(filename: "/tmp/test.c", directory: "") |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{!11, !11, !12, !13} |
| !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !12 = !DIBasicType(name: "float", size: 32, encoding: DW_ATE_float) |
| !13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64) |
| !14 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed) |
| !15 = !{} |
| !16 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) |
| !17 = !DILocation(line: 0, scope: !7) |
| |
| ... |
| --- |
| name: foo |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: gr32, preferred-register: '' } |
| - { id: 1, class: fr32, preferred-register: '' } |
| - { id: 2, class: gr32, preferred-register: '' } |
| - { id: 3, class: gr8, preferred-register: '' } |
| - { id: 4, class: gr64, preferred-register: '' } |
| - { id: 5, class: gr32, preferred-register: '' } |
| - { id: 6, class: gr32, preferred-register: '' } |
| - { id: 7, class: gr32, preferred-register: '' } |
| - { id: 8, class: gr8, preferred-register: '' } |
| - { id: 9, class: gr32, preferred-register: '' } |
| - { id: 10, class: gr8, preferred-register: '' } |
| - { id: 11, class: gr64, preferred-register: '' } |
| - { id: 12, class: gr32, preferred-register: '' } |
| liveins: |
| - { reg: '$edi', virtual-reg: '%0' } |
| - { reg: '$xmm0', virtual-reg: '%1' } |
| frameInfo: |
| hasCalls: true |
| body: | |
| bb.0.if.then: |
| successors: %bb.1(0x40000000), %bb.3(0x40000000) |
| liveins: $edi, $xmm0 |
| |
| %1:fr32 = COPY killed $xmm0 |
| %0:gr32 = COPY killed $edi |
| ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp |
| %2:gr32 = MOV32r0 implicit-def dead $eflags |
| %3:gr8 = COPY killed %2.sub_8bit |
| $edi = COPY killed %0 |
| $al = COPY killed %3 |
| 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 |
| ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp |
| %5:gr32 = COPY killed $eax |
| CMP32ri8 killed %5, 1, implicit-def $eflags |
| JCC_1 %bb.3, 5, implicit killed $eflags |
| JMP_1 %bb.1 |
| |
| bb.1.sw.bb: |
| successors: %bb.2(0x30000000), %bb.3(0x50000000) |
| |
| %7:gr32 = nofpexcept CVTTSS2SIrr killed %1, implicit $mxcsr, debug-instr-number 1 |
| %8:gr8 = COPY killed %7.sub_8bit |
| DBG_INSTR_REF 2, 0, !6, !DIExpression(), debug-location !17 |
| TEST8rr killed %8, %8, implicit-def $eflags |
| JCC_1 %bb.3, 5, implicit killed $eflags |
| JMP_1 %bb.2 |
| |
| bb.2.if.end: |
| successors: %bb.3(0x80000000) |
| |
| ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp |
| %9:gr32 = MOV32r0 implicit-def dead $eflags |
| %10:gr8 = COPY killed %9.sub_8bit |
| $al = COPY killed %10 |
| CALL64r undef %11:gr64, csr_64, implicit $rsp, implicit $ssp, implicit killed $al, implicit-def $rsp, implicit-def $ssp |
| ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp |
| |
| bb.3.sw.epilog: |
| RET 0, undef $eax |
| |
| ... |