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Reid Kleckner 9ea2c01264 [codeview] Emit S_FRAMEPROC and use S_DEFRANGE_FRAMEPOINTER_REL 
Summary:
Before this change, LLVM would always describe locals on the stack as
being relative to some specific register, RSP, ESP, EBP, ESI, etc.
Variables in stack memory are pretty common, so there is a special
S_DEFRANGE_FRAMEPOINTER_REL symbol for them. This change uses it to
reduce the size of our debug info.

On top of the size savings, there are cases on 32-bit x86 where local
variables are addressed from ESP, but ESP changes across the function.
Unlike in DWARF, there is no FPO data to describe the stack adjustments
made to push arguments onto the stack and pop them off after the call,
which makes it hard for the debugger to find the local variables in
frames further up the stack.

To handle this, CodeView has a special VFRAME register, which
corresponds to the $T0 variable set by our FPO data in 32-bit.  Offsets
to local variables are instead relative to this value.

This is part of PR38857.

Reviewers: hans, zturner, javed.absar

Subscribers: aprantl, hiraditya, JDevlieghere, llvm-commits

Differential Revision: https://reviews.llvm.org/D52217

llvm-svn: 343543
 		2018-10-01 21:59:45 +00:00
..
auto-successor.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
basic-block-liveins.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
basic-block-not-at-start-of-line-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
block-address-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
branch-probabilities.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
callee-saved-info.mir [MIR] Add support for debug metadata for fixed stack objects 2018-04-25 18:58:06 +00:00
cfi-def-cfa-offset.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
cfi-def-cfa-register.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
cfi-offset.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
constant-pool-item-redefinition-error.mir
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constant-pool.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
constant-value-error.mir
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copyIRflags.mir add IR flags to MI 2018-09-11 21:35:32 +00:00
dead-register-flag.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
def-register-already-tied-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
diexpr-win32.mir [codeview] Emit S_FRAMEPROC and use S_DEFRANGE_FRAMEPOINTER_REL 2018-10-01 21:59:45 +00:00
duplicate-memory-operand-flag.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
duplicate-register-flag-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
early-clobber-register-flag.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
empty0.mir Add triples or specify REQUIRES: default_triple to some tests 2018-01-27 23:31:09 +00:00
empty1.mir Add triples or specify REQUIRES: default_triple to some tests 2018-01-27 23:31:09 +00:00
empty2.mir Add triples or specify REQUIRES: default_triple to some tests 2018-01-27 23:31:09 +00:00
escape-function-name.ll [YAML] Add support for non-printable characters 2017-12-18 17:38:03 +00:00
expected-align-in-memory-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-alignment-after-align-in-memory-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-basic-block-at-start-of-body.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-block-reference-in-blockaddress.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-comma-after-cfi-register.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-comma-after-memory-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-different-implicit-operand.mir [MIRParser] Update a diagnostic message to use the correct register sigil. NFC 2018-06-19 18:39:40 +00:00
expected-different-implicit-register-flag.mir [MIRParser] Update a diagnostic message to use the correct register sigil. NFC 2018-06-19 18:39:40 +00:00
expected-function-reference-after-blockaddress.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-global-value-after-blockaddress.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-integer-after-offset-sign.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-integer-after-tied-def.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-integer-in-successor-weight.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-load-or-store-in-memory-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-machine-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-metadata-node-after-debug-location.mir [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
expected-metadata-node-after-exclaim.mir [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
expected-metadata-node-in-stack-object.mir [MIR] Add support for debug metadata for fixed stack objects 2018-04-25 18:58:06 +00:00
expected-named-register-in-allocation-hint.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-named-register-in-callee-saved-register.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-named-register-in-functions-livein.mir
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expected-named-register-livein.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-newline-at-end-of-list.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-number-after-bb.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-offset-after-cfi-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-pointer-value-in-memory-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-positive-alignment-after-align.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-register-after-cfi-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-register-after-flags.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-size-integer-after-memory-operation.mir Consistently use MemoryLocation::UnknownSize to indicate unknown access size 2018-08-20 20:37:57 +00:00
expected-size-integer-after-memory-operation2.mir Consistently use MemoryLocation::UnknownSize to indicate unknown access size 2018-08-20 20:37:57 +00:00
expected-stack-object.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-subregister-after-colon.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-target-flag-name.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-tied-def-after-lparen.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-value-in-memory-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
expected-virtual-register-in-functions-livein.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
external-symbol-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
fastmath.mir MachineInst support mapping SDNode fast math flags for support in Back End code generation 2018-05-03 00:07:56 +00:00
fixed-stack-di.mir [MIR] Add support for debug metadata for fixed stack objects 2018-04-25 18:58:06 +00:00
fixed-stack-memory-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
fixed-stack-object-redefinition-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
fixed-stack-objects.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
frame-info-save-restore-points.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
frame-info-stack-references.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
frame-setup-instruction-flag.mir [MIR] Allow frame-setup and frame-destroy on the same instruction 2018-03-13 19:53:16 +00:00
function-liveins.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
generic-instr-type.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
global-value-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
immediate-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
implicit-register-flag.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
inline-asm-registers.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
inline-asm.mir [MIR] Repurposing '$' sigil used by external symbols. Replacing with '&'. 2018-01-10 00:56:48 +00:00
instr-symbols-and-mcsymbol-operands.mir [x86/MIR] Implement support for pre- and post-instruction symbols, as 2018-08-16 23:11:05 +00:00
instructions-debug-location.mir [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
invalid-constant-pool-item.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
invalid-debug-location.mir MIRParser: Check that instructions only reference DILocation metadata 2018-10-01 17:50:52 +00:00
invalid-metadata-node-type.mir [MIR] Add support for debug metadata for fixed stack objects 2018-04-25 18:58:06 +00:00
invalid-target-flag-name.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
invalid-tied-def-index-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
jump-table-info.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
jump-table-redefinition-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
killed-register-flag.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
large-cfi-offset-number-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
large-immediate-operand-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
large-index-number-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
large-offset-number-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
large-size-in-memory-operand-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
lit.local.cfg
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liveout-register-mask.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
machine-basic-block-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
machine-instructions.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
machine-verifier.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
memory-operands.mir Consistently use MemoryLocation::UnknownSize to indicate unknown access size 2018-08-20 20:37:57 +00:00
metadata-operands.mir [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
missing-closing-quote.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
missing-comma.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
missing-implicit-operand.mir [MIRParser] Update a diagnostic message to use the correct register sigil. NFC 2018-06-19 18:39:40 +00:00
named-registers.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
newline-handling.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
null-register-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
pr38773.mir [DebugInfo][Dexter] Incorrect DBG_VALUE after MCP dead copy instruction removal. 2018-10-01 08:14:44 +00:00
register-mask-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
register-operand-class-invalid0.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
register-operand-class-invalid1.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
register-operand-class.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
register-operands-target-flag-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
renamable-register-flag.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
roundtrip.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
simple-register-allocation-hints.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
spill-slot-fixed-stack-object-aliased.mir
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spill-slot-fixed-stack-object-immutable.mir
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spill-slot-fixed-stack-objects.mir [MIR] Add support for debug metadata for fixed stack objects 2018-04-25 18:58:06 +00:00
stack-object-debug-info.mir [MIR] Add support for debug metadata for fixed stack objects 2018-04-25 18:58:06 +00:00
stack-object-invalid-name.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
stack-object-operand-name-mismatch-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
stack-object-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
stack-object-redefinition-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
stack-objects.mir [MIR] Add support for debug metadata for fixed stack objects 2018-04-25 18:58:06 +00:00
standalone-register-error.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
subreg-on-physreg.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
subregister-index-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
subregister-operands.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
successor-basic-blocks-weights.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
successor-basic-blocks.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
tied-def-operand-invalid.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
tied-physical-regs-match.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undef-register-flag.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-fixed-stack-object.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-global-value.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-ir-block-in-blockaddress.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-ir-block-slot-in-blockaddress.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-jump-table-id.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-named-global-value.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-register-class.mir
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undefined-stack-object.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-value-in-memory-operand.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
undefined-virtual-register.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
unexpected-type-phys.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
unknown-instruction.mir
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unknown-machine-basic-block.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
unknown-metadata-keyword.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
unknown-metadata-node.mir [DebugInfo] Add DILabel metadata and intrinsic llvm.dbg.label. 2018-05-09 02:40:45 +00:00
unknown-named-machine-basic-block.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
unknown-register.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
unknown-subregister-index-op.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
unknown-subregister-index.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00
unreachable_block.ll [MIRPrinter] Print empty successor lists when they cannot be guessed 2017-09-19 23:34:12 +00:00
unrecognized-character.mir
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variable-sized-stack-object-size-error.mir
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variable-sized-stack-objects.mir [MIR] Add support for debug metadata for fixed stack objects 2018-04-25 18:58:06 +00:00
virtual-register-redefinition-error.mir
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virtual-registers.mir Followup on Proposal to move MIR physical register namespace to '$' sigil. 2018-01-31 22:04:26 +00:00