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author	Tim Northover <t.p.northover@gmail.com>
	Wed, 21 Oct 2020 09:11:25 +0000 (10:11 +0100)
committer	Tim Northover <t.p.northover@gmail.com>
	Tue, 8 Dec 2020 10:28:26 +0000 (10:28 +0000)
commit	c5978f42ec8e9f7fa62a38510343440485752ec5
tree	576ba5a97f0188e9240a999bdbcb1d4421728233	tree \| snapshot
parent	c54d827fdb12d033dca2155c416f02791fc86786	commit \| diff

UBSAN: emit distinctive traps

Sometimes people get minimal crash reports after a UBSAN incident. This change
tags each trap with an integer representing the kind of failure encountered,
which can aid in tracking down the root cause of the problem.

55 files changed:

clang/lib/CodeGen/CGClass.cpp		diff \| blob \| history
clang/lib/CodeGen/CGExpr.cpp		diff \| blob \| history
clang/lib/CodeGen/CGExprScalar.cpp		diff \| blob \| history
clang/lib/CodeGen/CodeGenFunction.h		diff \| blob \| history
clang/lib/CodeGen/ItaniumCXXABI.cpp		diff \| blob \| history
clang/test/CodeGen/bounds-checking.c		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-attribute-align_value-on-lvalue.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-attribute-align_value-on-paramvar.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-attribute-alloc_align-on-function-variable.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-attribute-alloc_align-on-function.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-attribute-assume_aligned-on-function-two-params.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-attribute-assume_aligned-on-function.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-builtin_assume_aligned-three-params-variable.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-builtin_assume_aligned-three-params.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-builtin_assume_aligned-two-params.cpp		diff \| blob \| history
clang/test/CodeGen/catch-alignment-assumption-openmp.cpp		diff \| blob \| history
clang/test/CodeGen/catch-implicit-integer-sign-changes-CompoundAssignOperator.c		diff \| blob \| history
clang/test/CodeGen/catch-implicit-integer-sign-changes-incdec.c		diff \| blob \| history
clang/test/CodeGen/catch-implicit-integer-sign-changes.c		diff \| blob \| history
clang/test/CodeGen/catch-implicit-integer-truncations-CompoundAssignOperator.c		diff \| blob \| history
clang/test/CodeGen/catch-implicit-integer-truncations.c		diff \| blob \| history
clang/test/CodeGen/catch-implicit-signed-integer-truncation-or-sign-change-CompoundAssignOperator.c		diff \| blob \| history
clang/test/CodeGen/catch-implicit-signed-integer-truncation-or-sign-change.c		diff \| blob \| history
clang/test/CodeGen/catch-implicit-signed-integer-truncations-incdec.c		diff \| blob \| history
clang/test/CodeGen/catch-nullptr-and-nonzero-offset-when-nullptr-is-defined.c		diff \| blob \| history
clang/test/CodeGen/catch-nullptr-and-nonzero-offset.c		diff \| blob \| history
clang/test/CodeGen/catch-pointer-overflow-volatile.c		diff \| blob \| history
clang/test/CodeGen/catch-pointer-overflow.c		diff \| blob \| history
clang/test/CodeGen/catch-undef-behavior.c		diff \| blob \| history
clang/test/CodeGen/cfi-check-fail.c		diff \| blob \| history
clang/test/CodeGen/cfi-check-fail2.c		diff \| blob \| history
clang/test/CodeGen/sanitize-trap.c		diff \| blob \| history
clang/test/CodeGen/trapv.c		diff \| blob \| history
clang/test/CodeGen/ubsan-trap-debugloc.c	[new file with mode: 0644]	blob
clang/test/CodeGen/unsigned-trapv.c		diff \| blob \| history
clang/test/CodeGenCXX/cfi-cast.cpp		diff \| blob \| history
clang/test/CodeGenCXX/cfi-mfcall.cpp		diff \| blob \| history
clang/test/CodeGenCXX/trap-fnattr.cpp		diff \| blob \| history
clang/test/CodeGenCXX/type-metadata.cpp		diff \| blob \| history
llvm/docs/LangRef.rst		diff \| blob \| history
llvm/include/llvm/CodeGen/ISDOpcodes.h		diff \| blob \| history
llvm/include/llvm/IR/Intrinsics.td		diff \| blob \| history
llvm/include/llvm/Target/TargetSelectionDAG.td		diff \| blob \| history
llvm/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp		diff \| blob \| history
llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp		diff \| blob \| history
llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp		diff \| blob \| history
llvm/lib/CodeGen/TargetLoweringBase.cpp		diff \| blob \| history
llvm/lib/Target/AArch64/AArch64ISelLowering.cpp		diff \| blob \| history
llvm/lib/Target/AArch64/AArch64InstrInfo.td		diff \| blob \| history
llvm/lib/Target/AArch64/GISel/AArch64InstructionSelector.cpp		diff \| blob \| history
llvm/lib/Target/X86/X86ISelLowering.cpp		diff \| blob \| history
llvm/lib/Target/X86/X86InstrSystem.td		diff \| blob \| history
llvm/lib/Target/X86/X86MCInstLower.cpp		diff \| blob \| history
llvm/test/CodeGen/AArch64/ubsantrap.ll	[new file with mode: 0644]	blob
llvm/test/CodeGen/X86/ubsantrap.ll	[new file with mode: 0644]	blob

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