| blob | b40f2ae9cb6d07b3dd5aeb2923bebb72fc187914 |
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.
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"
16 define dso_local i32 @foo(i32 %bar, i32 %baz) !dbg !7 {
17 entry:
18 ret i32 0, !dbg !19
19 }
21 declare dso_local i32 @ext(i32)
23 ; Function Attrs: nounwind readnone speculatable willreturn
24 declare void @llvm.dbg.value(metadata, metadata, metadata)
26 !llvm.dbg.cu = !{!0}
27 !llvm.module.flags = !{!3, !4, !5}
28 !llvm.ident = !{!6}
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)
51 ...
52 ---
53 name: foo
54 alignment: 16
55 tracksRegLiveness: true
56 registers:
57 - { id: 0, class: gr32 }
58 - { id: 1, class: gr32 }
59 - { id: 2, class: gr32 }
60 - { id: 3, class: gr32 }
61 - { id: 4, class: gr32 }
62 liveins:
63 - { reg: '$edi', virtual-reg: '%1' }
64 - { reg: '$esi', virtual-reg: '%2' }
65 frameInfo:
66 maxAlignment: 1
67 hasCalls: true
68 machineFunctionInfo: {}
69 body: |
70 ; CHECK-LABEL: bb.0:
71 ; CHECK: renamable $ebp = COPY $edi
72 ; CHECK: MOV32mr %stack.1, 1, $noreg, 0, $noreg, killed renamable $ebp
73 bb.0:
74 successors: %bb.2(0x50000000), %bb.1(0x30000000)
75 liveins: $edi, $esi
77 DBG_VALUE $edi, $noreg, !11, !DIExpression(), debug-location !12
78 DBG_VALUE $esi, $noreg, !13, !DIExpression(), debug-location !12
79 %2:gr32 = COPY killed $esi
80 %1:gr32 = COPY killed $edi
81 ADJCALLSTACKDOWN64 0, 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
82 %3:gr32 = MOV32r0 implicit-def dead $eflags
83 $edi = COPY killed %3, debug-location !15
84 CALL64pcrel32 @ext, csr_64, implicit $rsp, implicit $ssp, implicit killed $edi, implicit-def $rsp, implicit-def $ssp, implicit-def $eax, debug-location !15
85 ADJCALLSTACKUP64 0, 0, implicit-def dead $rsp, implicit-def dead $eflags, implicit-def dead $ssp, implicit $rsp, implicit $ssp, debug-location !15
86 %4:gr32 = COPY killed $eax, debug-location !15
87 %10:gr32 = MOV32ri 0
88 %11:gr32 = MOV32ri 1
89 %12:gr32 = MOV32ri 2
90 %13:gr32 = MOV32ri 3
91 %14:gr32 = MOV32ri 4
92 %15:gr32 = MOV32ri 5
93 %16:gr32 = MOV32ri 6
94 %17:gr32 = MOV32ri 7
95 %18:gr32 = MOV32ri 8
96 %19:gr32 = MOV32ri 9
97 %20:gr32 = MOV32ri 10
98 %21:gr32 = MOV32ri 11
99 %22:gr32 = MOV32ri 12
100 %23:gr32 = MOV32ri 13
101 %24:gr32 = MOV32ri 14
102 TEST32rr killed %4, %4, implicit-def $eflags, debug-location !15
103 JCC_1 %bb.2, 5, implicit killed $eflags, debug-location !17
104 JMP_1 %bb.1, debug-location !17
106 bb.1:
107 %30:gr32 = MOV32ri 0
108 %31:gr32 = MOV32ri 1
109 %32:gr32 = MOV32ri 2
110 %33:gr32 = MOV32ri 3
111 %34:gr32 = MOV32ri 4
112 %35:gr32 = MOV32ri 5
113 %36:gr32 = MOV32ri 6
114 %37:gr32 = MOV32ri 7
115 %38:gr32 = MOV32ri 8
116 %39:gr32 = MOV32ri 9
117 %40:gr32 = MOV32ri 10
118 %41:gr32 = MOV32ri 11
119 %42:gr32 = MOV32ri 12
120 %43:gr32 = MOV32ri 13
121 %44:gr32 = MOV32ri 14
123 ; CHECK-LABEL: bb.2:
124 bb.2:
125 %0:gr32 = PHI %1, %bb.0, %2, %bb.1, debug-instr-number 1, debug-location !18
126 %50:gr32 = PHI %10, %bb.0, %30, %bb.1, debug-location !18
127 %51:gr32 = PHI %11, %bb.0, %31, %bb.1, debug-location !18
128 %52:gr32 = PHI %12, %bb.0, %32, %bb.1, debug-location !18
129 %53:gr32 = PHI %13, %bb.0, %33, %bb.1, debug-location !18
130 %54:gr32 = PHI %14, %bb.0, %34, %bb.1, debug-location !18
131 %55:gr32 = PHI %15, %bb.0, %35, %bb.1, debug-location !18
132 %56:gr32 = PHI %16, %bb.0, %36, %bb.1, debug-location !18
133 %57:gr32 = PHI %17, %bb.0, %37, %bb.1, debug-location !18
134 %58:gr32 = PHI %18, %bb.0, %38, %bb.1, debug-location !18
135 %59:gr32 = PHI %19, %bb.0, %39, %bb.1, debug-location !18
136 %60:gr32 = PHI %20, %bb.0, %40, %bb.1, debug-location !18
137 %61:gr32 = PHI %21, %bb.0, %41, %bb.1, debug-location !18
138 %62:gr32 = PHI %22, %bb.0, %42, %bb.1, debug-location !18
139 %63:gr32 = PHI %23, %bb.0, %43, %bb.1, debug-location !18
140 %64:gr32 = PHI %24, %bb.0, %44, %bb.1, debug-location !18
142 DBG_INSTR_REF 1, 0, !14, !DIExpression(), debug-location !12
143 ; CHECK: DBG_PHI %stack.1, 1
144 ; CHECK: renamable $eax = MOV32rm %stack.1,
145 ; CHECK: DBG_INSTR_REF 1, 0
146 $eax = COPY killed %0, debug-location !19
147 RET 0, killed $eax, debug-location !19
149 ...