65 lines
3.2 KiB
YAML
65 lines
3.2 KiB
YAML
# RUN: llc %s -o - -experimental-debug-variable-locations \
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# RUN: -run-pass=greedy,virtregrewriter | FileCheck %s
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#
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# This test is for stack spill folding -- the SETCC near the start of the MIR
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# below show be morphed into an SETCCm by the register allocator, making it
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# store to %stack.0. We should track this fact in the substitution table, by
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# adding a substitution to the memory-operand operand number.
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#
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# This is a single operand spill -- there's a separate test for tied def ones.
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#
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# Ideally this test would be shorter; however, it needs to be sufficiently
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# complex to force the register allocator to spill something, so there's a
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# limit.
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#
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# CHECK: debugValueSubstitutions:
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# CHECK-NEXT: - { srcinst: 1, srcop: 0, dstinst: 2, dstop: 1000000, subreg: 0 }
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# CHECK-LABEL: bb.0:
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# CHECK: SETCCm %stack.0, {{.*}} debug-instr-number 2
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--- |
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target triple = "x86_64--"
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define void @beans() !dbg !7 {
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ret void
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.c", directory: ".")
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!2 = !{}
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!3 = !{i32 7, !"Dwarf Version", i32 4}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang"}
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!7 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !8, scopeLine: 3, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10, !11, !11}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !DIBasicType(name: "short", size: 16, encoding: DW_ATE_signed)
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!12 = !DILocalVariable(name: "bar", arg: 1, scope: !7, file: !1, line: 3, type: !11)
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!13 = !DILocation(line: 0, scope: !7)
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!14 = !DILocalVariable(name: "baz", arg: 2, scope: !7, file: !1, line: 3, type: !11)
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!15 = distinct !DILexicalBlock(scope: !7, file: !1, line: 8, column: 7)
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...
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---
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name: beans
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tracksRegLiveness: True
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body: |
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bb.0:
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liveins: $edi
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%7:gr32 = COPY $edi
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CMP32ri8 %7, 4, implicit-def $eflags
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%0:gr8 = SETCCr 4, implicit $eflags, debug-instr-number 1
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; clobber all registers to force a spill/reload
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INLINEASM &nop, 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $rax, 12 /* clobber */, implicit-def dead early-clobber $rbx, 12 /* clobber */, implicit-def dead early-clobber $rcx, 12 /* clobber */, implicit-def dead early-clobber $rdx, 12 /* clobber */, implicit-def dead early-clobber $rsi, 12 /* clobber */, implicit-def dead early-clobber $rdi, 12 /* clobber */, implicit-def dead early-clobber $rbp, 12 /* clobber */, implicit-def dead early-clobber $r8, 12 /* clobber */, implicit-def dead early-clobber $r9, 12 /* clobber */, implicit-def dead early-clobber $r10, 12 /* clobber */, implicit-def dead early-clobber $r11, 12 /* clobber */, implicit-def dead early-clobber $r12, 12 /* clobber */, implicit-def dead early-clobber $r13, 12 /* clobber */, implicit-def dead early-clobber $r14, 12 /* clobber */, implicit-def dead early-clobber $r15
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$al = COPY %0
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RET 0, $al
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...
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