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-rw-r--r--gcc/reg-notes.def6
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/reg-notes.def b/gcc/reg-notes.def
index aa2daeac007..f82e7b741a0 100644
--- a/gcc/reg-notes.def
+++ b/gcc/reg-notes.def
@@ -148,6 +148,12 @@ REG_NOTE (CFA_OFFSET)
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