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 %s 5# 6# Like phi-through-regalloc.mir, pass a PHI node into register allocation, and 7# test that it correctly comes out, in a stack slot. Fifteen spurious PHIs have 8# 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 !19 19 } 20 21 declare dso_local i32 @ext(i32) 22 23 ; Function Attrs: nounwind readnone speculatable willreturn 24 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: foo 54alignment: 16 55tracksRegLiveness: true 56debugInstrRef: true 57registers: 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: 1 68 adjustsStack: true 69 hasCalls: true 70machineFunctionInfo: {} 71body: | 72 ; CHECK-LABEL: bb.0: 73 ; CHECK: renamable $ebp = COPY $edi 74 ; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, killed renamable $ebp 75 bb.0: 76 successors: %bb.2(0x50000000), %bb.1(0x30000000) 77 liveins: $edi, $esi 78 79 DBG_VALUE $edi, $noreg, !11, !DIExpression(), debug-location !12 80 DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !12 81 %2:gr32 = COPY killed $esi 82 %1:gr32 = COPY killed $edi 83 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15 84 %3:gr32 = MOV32r0 implicit-def dead $eflags 85 $edi = COPY killed %3, debug-location !15 86 CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15 87 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15 88 %4:gr32 = COPY killed $eax, debug-location !15 89 %10:gr32 = MOV32ri 0 90 %11:gr32 = MOV32ri 1 91 %12:gr32 = MOV32ri 2 92 %13:gr32 = MOV32ri 3 93 %14:gr32 = MOV32ri 4 94 %15:gr32 = MOV32ri 5 95 %16:gr32 = MOV32ri 6 96 %17:gr32 = MOV32ri 7 97 %18:gr32 = MOV32ri 8 98 %19:gr32 = MOV32ri 9 99 %20:gr32 = MOV32ri 10 100 %21:gr32 = MOV32ri 11 101 %22:gr32 = MOV32ri 12 102 %23:gr32 = MOV32ri 13 103 %24:gr32 = MOV32ri 14 104 TEST32rr killed %4, %4, implicit-def $eflags, debug-location !15 105 JCC_1 %bb.2, 5, implicit killed $eflags, debug-location !17 106 JMP_1 %bb.1, debug-location !17 107 108 bb.1: 109 %30:gr32 = MOV32ri 0 110 %31:gr32 = MOV32ri 1 111 %32:gr32 = MOV32ri 2 112 %33:gr32 = MOV32ri 3 113 %34:gr32 = MOV32ri 4 114 %35:gr32 = MOV32ri 5 115 %36:gr32 = MOV32ri 6 116 %37:gr32 = MOV32ri 7 117 %38:gr32 = MOV32ri 8 118 %39:gr32 = MOV32ri 9 119 %40:gr32 = MOV32ri 10 120 %41:gr32 = MOV32ri 11 121 %42:gr32 = MOV32ri 12 122 %43:gr32 = MOV32ri 13 123 %44:gr32 = MOV32ri 14 124 125 ; CHECK-LABEL: bb.2: 126 bb.2: 127 %0:gr32 = PHI %1, %bb.0, %2, %bb.1, debug-instr-number 1, debug-location !18 128 %50:gr32 = PHI %10, %bb.0, %30, %bb.1, debug-location !18 129 %51:gr32 = PHI %11, %bb.0, %31, %bb.1, debug-location !18 130 %52:gr32 = PHI %12, %bb.0, %32, %bb.1, debug-location !18 131 %53:gr32 = PHI %13, %bb.0, %33, %bb.1, debug-location !18 132 %54:gr32 = PHI %14, %bb.0, %34, %bb.1, debug-location !18 133 %55:gr32 = PHI %15, %bb.0, %35, %bb.1, debug-location !18 134 %56:gr32 = PHI %16, %bb.0, %36, %bb.1, debug-location !18 135 %57:gr32 = PHI %17, %bb.0, %37, %bb.1, debug-location !18 136 %58:gr32 = PHI %18, %bb.0, %38, %bb.1, debug-location !18 137 %59:gr32 = PHI %19, %bb.0, %39, %bb.1, debug-location !18 138 %60:gr32 = PHI %20, %bb.0, %40, %bb.1, debug-location !18 139 %61:gr32 = PHI %21, %bb.0, %41, %bb.1, debug-location !18 140 %62:gr32 = PHI %22, %bb.0, %42, %bb.1, debug-location !18 141 %63:gr32 = PHI %23, %bb.0, %43, %bb.1, debug-location !18 142 %64:gr32 = PHI %24, %bb.0, %44, %bb.1, debug-location !18 143 144 DBG_INSTR_REF !14, !DIExpression(DW_OP_LLVM_arg, 0), dbg-instr-ref(1, 0), debug-location !12 145 ; CHECK: DBG_PHI %stack.1, 1, 32 146 ; CHECK: renamable $eax = MOV32rm %stack.1, 147 ; CHECK: DBG_INSTR_REF {{.+}}, dbg-instr-ref(1, 0) 148 $eax = COPY killed %0, debug-location !19 149 RET 0, killed $eax, debug-location !19 150 151... 152