/* Register note definitions.
- Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GCC.
respectively. */
REG_NOTE (DEP_OUTPUT)
REG_NOTE (DEP_ANTI)
+REG_NOTE (DEP_CONTROL)
/* REG_BR_PROB is attached to JUMP_INSNs and CALL_INSNs. It has an
integer value. For jumps, it is the probability that this is a
won't return. */
REG_NOTE (BR_PROB)
-/* REG_VALUE_PROFILE is attached when the profile is read in to an
- insn before that the code to profile the value is inserted. It
- contains the results of profiling. */
-REG_NOTE (VALUE_PROFILE)
-
/* Attached to a call insn; indicates that the call is malloc-like and
that the pointer returned cannot alias anything else. */
REG_NOTE (NOALIAS)
instead of intuition. */
REG_NOTE (FRAME_RELATED_EXPR)
+/* Attached to insns that are RTX_FRAME_RELATED_P, but are too complex
+ for FRAME_RELATED_EXPR intuition. The insn's first pattern must be
+ a SET, and the destination must be the CFA register. The attached
+ rtx is an expression that defines the CFA. In the simplest case, the
+ rtx could be just the stack_pointer_rtx; more common would be a PLUS
+ with a base register and a constant offset. In the most complicated
+ cases, this will result in a DW_CFA_def_cfa_expression with the rtx
+ expression rendered in a dwarf location expression. */
+REG_NOTE (CFA_DEF_CFA)
+
+/* Attached to insns that are RTX_FRAME_RELATED_P, but are too complex
+ for FRAME_RELATED_EXPR intuition. This note adjusts the expression
+ from which the CFA is computed. The attached rtx defines a new CFA
+ expression, relative to the old CFA expression. This rtx must be of
+ the form (SET new-cfa-reg (PLUS old-cfa-reg const_int)). If the note
+ rtx is NULL, we use the first SET of the insn. */
+REG_NOTE (CFA_ADJUST_CFA)
+
+/* Similar to FRAME_RELATED_EXPR, with the additional information that
+ this is a save to memory, i.e. will result in DW_CFA_offset or the
+ like. The pattern or the insn should be a simple store relative to
+ the CFA. */
+REG_NOTE (CFA_OFFSET)
+
+/* Similar to FRAME_RELATED_EXPR, with the additional information that this
+ is a save to a register, i.e. will result in DW_CFA_register. The insn
+ or the pattern should be simple reg-reg move. */
+REG_NOTE (CFA_REGISTER)
+
+/* Attached to insns that are RTX_FRAME_RELATED_P, but are too complex
+ for FRAME_RELATED_EXPR intuition. This is a save to memory, i.e. will
+ result in a DW_CFA_expression. The pattern or the insn should be a
+ store of a register to an arbitrary (non-validated) memory address. */
+REG_NOTE (CFA_EXPRESSION)
+
+/* Attached to insns that are RTX_FRAME_RELATED_P, with the information
+ that this is a restore operation, i.e. will result in DW_CFA_restore
+ or the like. Either the attached rtx, or the destination of the insn's
+ first pattern is the register to be restored. */
+REG_NOTE (CFA_RESTORE)
+
+/* Attached to insns that are RTX_FRAME_RELATED_P, marks insn that sets
+ vDRAP from DRAP. If vDRAP is a register, vdrap_reg is initalized
+ to the argument, if it is a MEM, it is ignored. */
+REG_NOTE (CFA_SET_VDRAP)
+
+/* Attached to insns that are RTX_FRAME_RELATED_P, indicating a window
+ save operation, i.e. will result in a DW_CFA_GNU_window_save.
+ The argument is ignored. */
+REG_NOTE (CFA_WINDOW_SAVE)
+
+/* Attached to insns that are RTX_FRAME_RELATED_P, marks the insn as
+ requiring that all queued information should be flushed *before* insn,
+ regardless of what is visible in the rtl. The argument is ignored.
+ This is normally used for a call instruction which is not exposed to
+ the rest of the compiler as a CALL_INSN. */
+REG_NOTE (CFA_FLUSH_QUEUE)
+
/* Indicates that REG holds the exception context for the function.
This context is shared by inline functions, so the code to acquire
the real exception context is delayed until after inlining. */
/* This kind of note is generated at each to `setjmp', and similar
functions that can return twice. */
REG_NOTE (SETJMP)
+
+/* This kind of note is generated at each transactional memory
+ builtin, to indicate we need to generate transaction restart
+ edges for this insn. */
+REG_NOTE (TM)
+
+/* Indicates the cumulative offset of the stack pointer accounting
+ for pushed arguments. This will only be generated when
+ ACCUMULATE_OUTGOING_ARGS is false. */
+REG_NOTE (ARGS_SIZE)
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