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3f66a78716
DwarfDebug unconditionally assumes for all call instructions the 0th operand is the callee operand, which seems to be true for other targets, but not for WebAssembly. This adds `TargetInstrInfo::getCallOperand` method whose default implementation returns `getOperand(0)` and makes WebAssembly overrides it to use its own utility method to get the callee operand. This also fixes an existing bug in `WebAssembly::getCalleeOp`, which was uncovered by this CL. Reviewed By: dschuff, djtodoro Differential Revision: https://reviews.llvm.org/D102978
48 lines
2.2 KiB
LLVM
48 lines
2.2 KiB
LLVM
; RUN: llc -filetype=obj %s -o - | llvm-dwarfdump - | FileCheck %s
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;; This checks if the call site information is correctly written in debug info.
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;; This is a regression test for the bug that DwarfDebug unconditionally assumed
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;; the callee operand was getOperand(0), which was not true for WebAssembly.
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; CHECK: 0x00000026: DW_TAG_subprogram
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; CHECK: DW_AT_name ("call_direct")
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; CHECK: 0x0000003d: DW_TAG_GNU_call_site
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; CHECK-NEXT: DW_AT_abstract_origin (0x00000047 "foo")
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define i32 @call_direct() !dbg !6 {
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entry:
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%0 = call i32 @foo(), !dbg !8
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ret i32 %0, !dbg !9
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}
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;; WebAssembly does not currently support DW_TAG_GNU_call_site for stackified
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;; registers. This just checks if the test runs without crashing.
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define i32 @call_indirect(i32 (i32, i32)* %callee) !dbg !11 {
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%1 = call i32 %callee(i32 3, i32 5), !dbg !12
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ret i32 %1, !dbg !13
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}
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declare !dbg !10 i32 @foo()
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
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!1 = !DIFile(filename: "test.c", directory: "/home/llvm-project")
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!2 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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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 = distinct !DISubprogram(name: "call_direct", scope: !1, file: !1, line: 3, type: !7, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!7 = !DISubroutineType(types: !{null})
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!8 = !DILocation(line: 4, column: 11, scope: !6)
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!9 = !DILocation(line: 7, column: 1, scope: !6)
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!10 = !DISubprogram(name: "foo", scope: !1, file: !1, line: 30, type: !7, scopeLine: 3, spFlags: DISPFlagOptimized)
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!11 = distinct !DISubprogram(name: "call_indirect", scope: !1, file: !1, line: 3, type: !7, scopeLine: 3, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0)
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!12 = !DILocation(line: 40, column: 11, scope: !11)
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!13 = !DILocation(line: 70, column: 1, scope: !11)
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