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1# RUN: llc %s -run-pass=x86-fp-stackifier -o - -experimental-debug-variable-locations | FileCheck %s --implicit-check-not=debug-instr-number2# RUN: llc %s -passes=x86-fp-stackifier -o - -experimental-debug-variable-locations | FileCheck %s --implicit-check-not=debug-instr-number3#4# The x87 FP instructions below have debug instr numbers attached -- but the5# operands get rewritten when it's converted to stack-form. Rather than trying6# to recover from this, drop any instruction numbers.7#8## We shouldn't drop numbers from _every_ call though:9# CHECK: CALLpcrel32 @ext, csr_32, implicit $esp, implicit $ssp, implicit-def $esp, implicit-def $ssp, debug-instr-number 101,10#11# Original program, command line 'clang ./test.c -O2 -g -m32 -o out.o -c'12#13# long double ext();14# 15# long double glob = 1.234;16# 17# long double foo(long double a, long double b, long double c) {18# a += b;19# b += c;20# a *= ext();21# b /= ext();22# if (a < 5.0)23# a += glob;24# return a - b;25# }26# 27 28--- |29 ; ModuleID = 'out.ll'30 source_filename = "./test.c"31 target datalayout = "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128"32 target triple = "i386-unknown-linux-gnu"33 34 @glob = dso_local local_unnamed_addr global x86_fp80 0xK3FFF9DF3B645A1CAC000, align 4, !dbg !035 36 ; Function Attrs: nounwind37 define dso_local x86_fp80 @foo(x86_fp80 %a, x86_fp80 %b, x86_fp80 %c) local_unnamed_addr !dbg !13 {38 entry:39 call void @llvm.dbg.value(metadata x86_fp80 %a, metadata !17, metadata !DIExpression()), !dbg !2040 call void @llvm.dbg.value(metadata x86_fp80 %b, metadata !18, metadata !DIExpression()), !dbg !2041 call void @llvm.dbg.value(metadata x86_fp80 %c, metadata !19, metadata !DIExpression()), !dbg !2042 %add = fadd x86_fp80 %a, %b, !dbg !2143 call void @llvm.dbg.value(metadata x86_fp80 %add, metadata !17, metadata !DIExpression()), !dbg !2044 call void @llvm.dbg.value(metadata x86_fp80 undef, metadata !18, metadata !DIExpression()), !dbg !2045 %call = tail call x86_fp80 @ext() #3, !dbg !2246 %mul = fmul x86_fp80 %add, %call, !dbg !2347 call void @llvm.dbg.value(metadata x86_fp80 %mul, metadata !17, metadata !DIExpression()), !dbg !2048 %call2 = tail call x86_fp80 @ext() #3, !dbg !2449 call void @llvm.dbg.value(metadata x86_fp80 undef, metadata !18, metadata !DIExpression()), !dbg !2050 %cmp = fcmp olt x86_fp80 %mul, 0xK4001A000000000000000, !dbg !2551 %0 = load x86_fp80, ptr @glob, align 4, !dbg !2752 %add3 = fadd x86_fp80 %mul, %0, !dbg !2753 %a.addr.0 = select i1 %cmp, x86_fp80 %add3, x86_fp80 %mul, !dbg !2754 %add1 = fadd x86_fp80 %b, %c, !dbg !2855 call void @llvm.dbg.value(metadata x86_fp80 %add1, metadata !18, metadata !DIExpression()), !dbg !2056 %div = fdiv x86_fp80 %add1, %call2, !dbg !2957 call void @llvm.dbg.value(metadata x86_fp80 %div, metadata !18, metadata !DIExpression()), !dbg !2058 call void @llvm.dbg.value(metadata x86_fp80 %a.addr.0, metadata !17, metadata !DIExpression()), !dbg !2059 %sub = fsub x86_fp80 %a.addr.0, %div, !dbg !3060 ret x86_fp80 %sub, !dbg !3161 }62 63 declare dso_local x86_fp80 @ext(...) local_unnamed_addr64 65 ; Function Attrs: nofree nosync nounwind readnone speculatable willreturn66 declare void @llvm.dbg.value(metadata, metadata, metadata)67 68 !llvm.dbg.cu = !{!2}69 !llvm.module.flags = !{!8, !9, !10, !11}70 !llvm.ident = !{!12}71 72 !0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())73 !1 = distinct !DIGlobalVariable(name: "glob", scope: !2, file: !6, line: 3, type: !7, isLocal: false, isDefinition: true)74 !2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5, splitDebugInlining: false, nameTableKind: None)75 !3 = !DIFile(filename: "test.c", directory: "/fast/fs/build34llvm4")76 !4 = !{}77 !5 = !{!0}78 !6 = !DIFile(filename: "./test.c", directory: ".")79 !7 = !DIBasicType(name: "long double", size: 96, encoding: DW_ATE_float)80 !8 = !{i32 1, !"NumRegisterParameters", i32 0}81 !9 = !{i32 7, !"Dwarf Version", i32 4}82 !10 = !{i32 2, !"Debug Info Version", i32 3}83 !11 = !{i32 1, !"wchar_size", i32 4}84 !12 = !{!"clang"}85 !13 = distinct !DISubprogram(name: "foo", scope: !6, file: !6, line: 5, type: !14, scopeLine: 5, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2, retainedNodes: !16)86 !14 = !DISubroutineType(types: !15)87 !15 = !{!7, !7, !7, !7}88 !16 = !{!17, !18, !19}89 !17 = !DILocalVariable(name: "a", arg: 1, scope: !13, file: !6, line: 5, type: !7)90 !18 = !DILocalVariable(name: "b", arg: 2, scope: !13, file: !6, line: 5, type: !7)91 !19 = !DILocalVariable(name: "c", arg: 3, scope: !13, file: !6, line: 5, type: !7)92 !20 = !DILocation(line: 0, scope: !13)93 !21 = !DILocation(line: 6, column: 5, scope: !13)94 !22 = !DILocation(line: 8, column: 8, scope: !13)95 !23 = !DILocation(line: 8, column: 5, scope: !13)96 !24 = !DILocation(line: 9, column: 8, scope: !13)97 !25 = !DILocation(line: 10, column: 9, scope: !26)98 !26 = distinct !DILexicalBlock(scope: !13, file: !6, line: 10, column: 7)99 !27 = !DILocation(line: 10, column: 7, scope: !13)100 !28 = !DILocation(line: 7, column: 5, scope: !13)101 !29 = !DILocation(line: 9, column: 5, scope: !13)102 !30 = !DILocation(line: 12, column: 12, scope: !13)103 !31 = !DILocation(line: 12, column: 3, scope: !13)104 105...106---107name: foo108alignment: 16109tracksRegLiveness: true110debugInstrRef: true111frameInfo:112 hasCalls: true113fixedStack:114 - { id: 0, type: default, offset: 24, size: 10, alignment: 8, stack-id: default, 115 isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true, 116 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }117 - { id: 1, type: default, offset: 12, size: 10, alignment: 4, stack-id: default, 118 isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true, 119 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }120 - { id: 2, type: default, offset: 0, size: 10, alignment: 16, stack-id: default, 121 isImmutable: true, isAliased: false, callee-saved-register: '', callee-saved-restored: true, 122 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }123stack:124 - { id: 0, name: '', type: spill-slot, offset: 0, size: 10, alignment: 4, 125 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 126 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }127 - { id: 1, name: '', type: spill-slot, offset: 0, size: 10, alignment: 4, 128 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 129 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }130 - { id: 2, name: '', type: spill-slot, offset: 0, size: 10, alignment: 4, 131 stack-id: default, callee-saved-register: '', callee-saved-restored: true, 132 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }133callSites: []134debugValueSubstitutions: []135constants:136 - id: 0137 value: 'float 5.000000e+00'138 alignment: 4139 isTargetSpecific: false140machineFunctionInfo: {}141body: |142 bb.0.entry:143 renamable $fp0 = nofpexcept LD_Fp80m %fixed-stack.0, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 1 :: (load (s80) from %fixed-stack.0, align 8)144 ST_FpP80m %stack.0, 1, $noreg, 0, $noreg, killed renamable $fp0, implicit-def $fpsw, implicit $fpcw, debug-instr-number 2 :: (store (s80) into %stack.0, align 4)145 renamable $fp1 = nofpexcept LD_Fp80m %fixed-stack.1, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 3 :: (load (s80) from %fixed-stack.1, align 4)146 ST_FpP80m %stack.1, 1, $noreg, 0, $noreg, renamable $fp1, implicit-def $fpsw, implicit $fpcw, debug-instr-number 4 :: (store (s80) into %stack.1, align 4)147 renamable $fp0 = nofpexcept LD_Fp80m %fixed-stack.2, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 5 :: (load (s80) from %fixed-stack.2, align 16)148 renamable $fp0 = nofpexcept ADD_Fp80 killed renamable $fp0, killed renamable $fp1, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 6, debug-location !21149 ST_FpP80m %stack.2, 1, $noreg, 0, $noreg, killed renamable $fp0, implicit-def $fpsw, implicit $fpcw, debug-instr-number 7 :: (store (s80) into %stack.2, align 4)150 ADJCALLSTACKDOWN32 0, 0, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp, debug-location !22151 152 ; This identical call (to the one below) does not touch the FP registers at153 ; all. Therefore, it shouldn't have any debug instructions dropped.154 CALLpcrel32 @ext, csr_32, implicit $esp, implicit $ssp, implicit-def $esp, implicit-def $ssp, debug-instr-number 101, debug-location !22155 156 ; Original call: this should have it's location dropped, as it touches the157 ; FP stack.158 CALLpcrel32 @ext, csr_32, implicit $esp, implicit $ssp, implicit-def $esp, implicit-def $ssp, implicit-def $fp0, debug-instr-number 100, debug-location !22159 160 161 ADJCALLSTACKUP32 0, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp, debug-location !22162 renamable $fp1 = LD_Fp80m %stack.2, 1, $noreg, 0, $noreg, implicit-def $fpsw, implicit $fpcw :: (load (s80) from %stack.2, align 4)163 renamable $fp0 = nofpexcept MUL_Fp80 killed renamable $fp1, killed renamable $fp0, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 8, debug-location !23164 ST_FpP80m %stack.2, 1, $noreg, 0, $noreg, killed renamable $fp0, implicit-def $fpsw, implicit $fpcw, debug-instr-number 9 :: (store (s80) into %stack.2, align 4)165 ADJCALLSTACKDOWN32 0, 0, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp, debug-location !24166 CALLpcrel32 @ext, csr_32, implicit $esp, implicit $ssp, implicit-def $esp, implicit-def $ssp, implicit-def $fp0, debug-location !24167 ADJCALLSTACKUP32 0, 0, implicit-def dead $esp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $esp, implicit $ssp, debug-location !24168 renamable $fp1 = nofpexcept LD_Fp32m80 $noreg, 1, $noreg, %const.0, $noreg, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 10 :: (load (s32) from constant-pool)169 renamable $fp2 = LD_Fp80m %stack.2, 1, $noreg, 0, $noreg, implicit-def $fpsw, implicit $fpcw, debug-instr-number 11 :: (load (s80) from %stack.2, align 4)170 nofpexcept UCOM_FpIr80 killed renamable $fp1, renamable $fp2, implicit-def $eflags, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 12, debug-location !25171 renamable $fp1 = nofpexcept LD_Fp80m $noreg, 1, $noreg, @glob, $noreg, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 13, debug-location !27 :: (dereferenceable load (s80) from @glob, align 4)172 renamable $fp1 = nofpexcept ADD_Fp80 renamable $fp2, killed renamable $fp1, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 14, debug-location !27173 renamable $fp2 = CMOVNBE_Fp80 killed renamable $fp2, killed renamable $fp1, implicit-def dead $fpsw, implicit killed $eflags, debug-instr-number 15, debug-location !27174 renamable $fp3 = COPY killed renamable $fp2175 renamable $fp1 = LD_Fp80m %stack.0, 1, $noreg, 0, $noreg, implicit-def $fpsw, implicit $fpcw, debug-instr-number 16 :: (load (s80) from %stack.0, align 4)176 renamable $fp2 = LD_Fp80m %stack.1, 1, $noreg, 0, $noreg, implicit-def $fpsw, implicit $fpcw, debug-instr-number 17 :: (load (s80) from %stack.1, align 4)177 renamable $fp1 = nofpexcept ADD_Fp80 killed renamable $fp2, killed renamable $fp1, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 18, debug-location !28178 renamable $fp0 = nofpexcept DIV_Fp80 killed renamable $fp1, killed renamable $fp0, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 19, debug-location !29179 renamable $fp0 = nofpexcept SUB_Fp80 killed renamable $fp3, killed renamable $fp0, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 20, debug-location !30180 ;; Edited in:181 renamable $fp0 = ADD_Fp64m killed renamable $fp0, killed $esp, 1, $noreg, 0, $noreg, implicit-def dead $fpsw, implicit $fpcw, debug-instr-number 21, :: (load (s64) from `ptr undef`)182 RET 0, killed renamable $fp0, debug-location !31183 184...185