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1# RUN: llc %s -o - -mtriple=x86_64-unknown-unknown \2# RUN: -experimental-debug-variable-locations \3# RUN: -run-pass=phi-node-elimination,livedebugvars,greedy,virtregrewriter \4# RUN: | FileCheck %s5#6# Like phi-through-regalloc.mir, pass a PHI node into register allocation, and7# test that it correctly comes out, in a stack slot. Fifteen spurious PHIs have8# been added to force the register allocator to spill one.9 10--- |11 ; ModuleID = 'promoted.ll'12 source_filename = "test.c"13 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"14 target triple = "x86_64-unknown-linux-gnu"15 16 define dso_local i32 @foo(i32 %bar, i32 %baz) !dbg !7 {17 entry:18 ret i32 0, !dbg !1919 }20 21 declare dso_local i32 @ext(i32)22 23 ; Function Attrs: nounwind readnone speculatable willreturn24 declare void @llvm.dbg.value(metadata, metadata, metadata)25 26 !llvm.dbg.cu = !{!0}27 !llvm.module.flags = !{!3, !4, !5}28 !llvm.ident = !{!6}29 30 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)31 !1 = !DIFile(filename: "test.c", directory: ".")32 !2 = !{}33 !3 = !{i32 7, !"Dwarf Version", i32 4}34 !4 = !{i32 2, !"Debug Info Version", i32 3}35 !5 = !{i32 1, !"wchar_size", i32 4}36 !6 = !{!"."}37 !7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 2, type: !8, scopeLine: 2, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)38 !8 = !DISubroutineType(types: !9)39 !9 = !{!10, !10, !10}40 !10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)41 !11 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 2, type: !10)42 !12 = !DILocation(line: 0, scope: !7)43 !13 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 2, type: !10)44 !14 = !DILocalVariable(name: "either", scope: !7, file: !1, line: 3, type: !10)45 !15 = !DILocation(line: 4, column: 7, scope: !16)46 !16 = distinct !DILexicalBlock(scope: !7, file: !1, line: 4, column: 7)47 !17 = !DILocation(line: 4, column: 7, scope: !7)48 !18 = !DILocation(line: 0, scope: !16)49 !19 = !DILocation(line: 9, column: 3, scope: !7)50 51...52---53name: foo54alignment: 1655tracksRegLiveness: true56debugInstrRef: true57registers:58 - { id: 0, class: gr32 }59 - { id: 1, class: gr32 }60 - { id: 2, class: gr32 }61 - { id: 3, class: gr32 }62 - { id: 4, class: gr32 }63liveins:64 - { reg: '$edi', virtual-reg: '%1' }65 - { reg: '$esi', virtual-reg: '%2' }66frameInfo:67 maxAlignment: 168 adjustsStack: true69 hasCalls: true70machineFunctionInfo: {}71body: |72 ; CHECK-LABEL: bb.0:73 ; CHECK: renamable $ebp = COPY $edi74 ; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, killed renamable $ebp75 bb.0:76 successors: %bb.2(0x50000000), %bb.1(0x30000000)77 liveins: $edi, $esi78 79 DBG_VALUE $edi, $noreg, !11, !DIExpression(), debug-location !1280 DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !1281 %2:gr32 = COPY killed $esi82 %1:gr32 = COPY killed $edi83 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !1584 %3:gr32 = MOV32r0 implicit-def dead $eflags85 $edi = COPY killed %3, debug-location !1586 CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !1587 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !1588 %4:gr32 = COPY killed $eax, debug-location !1589 %10:gr32 = MOV32ri 090 %11:gr32 = MOV32ri 191 %12:gr32 = MOV32ri 292 %13:gr32 = MOV32ri 393 %14:gr32 = MOV32ri 494 %15:gr32 = MOV32ri 595 %16:gr32 = MOV32ri 696 %17:gr32 = MOV32ri 797 %18:gr32 = MOV32ri 898 %19:gr32 = MOV32ri 999 %20:gr32 = MOV32ri 10100 %21:gr32 = MOV32ri 11101 %22:gr32 = MOV32ri 12102 %23:gr32 = MOV32ri 13103 %24:gr32 = MOV32ri 14104 TEST32rr killed %4, %4, implicit-def $eflags, debug-location !15105 JCC_1 %bb.2, 5, implicit killed $eflags, debug-location !17106 JMP_1 %bb.1, debug-location !17107 108 bb.1:109 %30:gr32 = MOV32ri 0110 %31:gr32 = MOV32ri 1111 %32:gr32 = MOV32ri 2112 %33:gr32 = MOV32ri 3113 %34:gr32 = MOV32ri 4114 %35:gr32 = MOV32ri 5115 %36:gr32 = MOV32ri 6116 %37:gr32 = MOV32ri 7117 %38:gr32 = MOV32ri 8118 %39:gr32 = MOV32ri 9119 %40:gr32 = MOV32ri 10120 %41:gr32 = MOV32ri 11121 %42:gr32 = MOV32ri 12122 %43:gr32 = MOV32ri 13123 %44:gr32 = MOV32ri 14124 125 ; CHECK-LABEL: bb.2:126 bb.2:127 %0:gr32 = PHI %1, %bb.0, %2, %bb.1, debug-instr-number 1, debug-location !18128 %50:gr32 = PHI %10, %bb.0, %30, %bb.1, debug-location !18129 %51:gr32 = PHI %11, %bb.0, %31, %bb.1, debug-location !18130 %52:gr32 = PHI %12, %bb.0, %32, %bb.1, debug-location !18131 %53:gr32 = PHI %13, %bb.0, %33, %bb.1, debug-location !18132 %54:gr32 = PHI %14, %bb.0, %34, %bb.1, debug-location !18133 %55:gr32 = PHI %15, %bb.0, %35, %bb.1, debug-location !18134 %56:gr32 = PHI %16, %bb.0, %36, %bb.1, debug-location !18135 %57:gr32 = PHI %17, %bb.0, %37, %bb.1, debug-location !18136 %58:gr32 = PHI %18, %bb.0, %38, %bb.1, debug-location !18137 %59:gr32 = PHI %19, %bb.0, %39, %bb.1, debug-location !18138 %60:gr32 = PHI %20, %bb.0, %40, %bb.1, debug-location !18139 %61:gr32 = PHI %21, %bb.0, %41, %bb.1, debug-location !18140 %62:gr32 = PHI %22, %bb.0, %42, %bb.1, debug-location !18141 %63:gr32 = PHI %23, %bb.0, %43, %bb.1, debug-location !18142 %64:gr32 = PHI %24, %bb.0, %44, %bb.1, debug-location !18143 144 DBG_INSTR_REF !14, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !12145 ; CHECK: DBG_PHI %stack.1, 1, 32146 ; CHECK: renamable $eax = MOV32rm %stack.1,147 ; CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0)148 $eax = COPY killed %0, debug-location !19149 RET 0, killed $eax, debug-location !19150 151...152