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SDDbgValues are apparently not being legalized. Fix a symptom of the problem,

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and not the real problem itself, by dropping debug info for i128 values.
rdar://7958162.

llvm-svn: 103310
This commit is contained in:
Dan Gohman 2010-05-07 22:19:08 +00:00
parent 2644f3ae62
commit 95040c18f4
2 changed files with 32 additions and 1 deletions
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8
lib/CodeGen/SelectionDAG/InstrEmitter.cpp
View File

@ -583,7 +583,13 @@ InstrEmitter::EmitDbgValue(SDDbgValue *SD,
} else if (SD->getKind() == SDDbgValue::CONST) {
const Value *V = SD->getConst();
if (const ConstantInt *CI = dyn_cast<ConstantInt>(V)) {
MIB.addImm(CI->getSExtValue());
// FIXME: SDDbgValues aren't updated with legalization, so it's possible
// to have i128 values in them at this point. As a crude workaround, just
// drop the debug info if this happens.
if (!CI->getValue().isSignedIntN(64))
MIB.addReg(0U);
else
MIB.addImm(CI->getSExtValue());
} else if (const ConstantFP *CF = dyn_cast<ConstantFP>(V)) {
MIB.addFPImm(CF);
} else {

25
test/CodeGen/Generic/legalize-dbg-value.ll Normal file
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@ -0,0 +1,25 @@
; RUN: llc < %s -o /dev/null
; llvm.dbg.value instructions can have types which are not legal for the
; target. CodeGen should handle this.
define i128 @__mulvti3(i128 %a, i128 %b) nounwind {
entry:
tail call void @llvm.dbg.value(metadata !0, i64 0, metadata !1), !dbg !11
unreachable
}
declare void @llvm.dbg.value(metadata, i64, metadata) nounwind readnone
!0 = metadata !{i128 170141183460469231731687303715884105727}
!1 = metadata !{i32 524544, metadata !2, metadata !"MAX", metadata !4, i32 29, metadata !8} ; [ DW_TAG_auto_variable ]
!2 = metadata !{i32 524299, metadata !3, i32 26, i32 0} ; [ DW_TAG_lexical_block ]
!3 = metadata !{i32 524334, i32 0, metadata !4, metadata !"__mulvti3", metadata !"__mulvti3", metadata !"__mulvti3", metadata !4, i32 26, metadata !6, i1 false, i1 true, i32 0, i32 0, null, i1 false} ; [ DW_TAG_subprogram ]
!4 = metadata !{i32 524329, metadata !"mulvti3.c", metadata !"/Volumes/Sandbox/llvm/swb/Libcompiler_rt-6.roots/Libcompiler_rt-6/lib", metadata !5} ; [ DW_TAG_file_type ]
!5 = metadata !{i32 524305, i32 0, i32 1, metadata !"mulvti3.c", metadata !"/Volumes/Sandbox/llvm/swb/Libcompiler_rt-6.roots/Libcompiler_rt-6/lib", metadata !"4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2328)", i1 true, i1 true, metadata !"", i32 0} ; [ DW_TAG_compile_unit ]
!6 = metadata !{i32 524309, metadata !4, metadata !"", metadata !4, i32 0, i64 0, i64 0, i64 0, i32 0, null, metadata !7, i32 0, null} ; [ DW_TAG_subroutine_type ]
!7 = metadata !{metadata !8, metadata !8, metadata !8}
!8 = metadata !{i32 524310, metadata !4, metadata !"ti_int", metadata !9, i32 78, i64 0, i64 0, i64 0, i32 0, metadata !10} ; [ DW_TAG_typedef ]
!9 = metadata !{i32 524329, metadata !"int_lib.h", metadata !"/Volumes/Sandbox/llvm/swb/Libcompiler_rt-6.roots/Libcompiler_rt-6/lib", metadata !5} ; [ DW_TAG_file_type ]
!10 = metadata !{i32 524324, metadata !4, metadata !"", metadata !4, i32 0, i64 128, i64 128, i64 0, i32 0, i32 5} ; [ DW_TAG_base_type ]
!11 = metadata !{i32 29, i32 0, metadata !2, null}