Jeremy Morse 6df259fb43 [InstrRef][X86] Drop debug instruction numbers from x87 instructions ... Avoid a crash when using instruction referencing if x87 floating point instructions are used. These instructions are significantly mutated when they're rewritten from referring to registers, to referring to floating-point-stack positions. As a result, their operands are re-ordered, and (InstrRef) LiveDebugValues asserts when it sees a DBG_INSTR_REF referring to a non-reg non-def register operand. To fix this, drop the instruction numbers, and thus variable locations. This patch adds a helper utility do do that. Dropping the variable locations is sub-optimal, but applying DBG_VALUEs to the $fp0 and similar registers is dropped on emission too. It seems we've never done well at describing variables that live in x87 registers, at all. Differential Revision: https://reviews.llvm.org/D105657		2021-07-19 15:08:27 +01:00
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AArch64	CodeGen: Print/parse LLTs in MachineMemOperands	2021-06-30 16:54:13 -04:00
ARM	CodeGen: Print/parse LLTs in MachineMemOperands	2021-06-30 16:54:13 -04:00
Hexagon	[RemoveRedundantDebugValues] Add a Pass that removes redundant DBG_VALUEs	2021-07-14 04:29:42 -07:00
InstrRef	[InstrRef][X86] Drop debug instruction numbers from x87 instructions	2021-07-19 15:08:27 +01:00
Mips	CodeGen: Print/parse LLTs in MachineMemOperands	2021-06-30 16:54:13 -04:00
SystemZ	[SystemZ] Separate LoZ ELF specifics in tablegen.	2021-02-17 16:11:58 -05:00
X86	[2/2][RemoveRedundantDebugValues] Add a Pass that removes redundant DBG_VALUEs	2021-07-15 00:08:31 -07:00
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