[Bug middle-end/37815] [4.4 Regression] ICE in vt_add_function_parameters (bootstrap error)

[jakub at gcc dot gnu dot org]

------- Comment #5 from jakub at gcc dot gnu dot org  2008-10-14 11:47 -------
vt_add_function_parameters asserts that REG_EXPR or MEM_EXPR of DECL_RTL of a
PARM decl, if it is non-NULL, is the PARM_DECL itself, but with the r141077
patch when the stack slots may be shared, decl might be actually
spill_slot_decl.
Not sure how should var-tracking.c figure out where the stack slot is still
used for the PARM_DECL and where it starts holding something else.
On this libgcc2.i sparc testcase the stack slot in question (fp-176) is used
first as c (one of PARM_DECLs) and after a while as c.49 (VAR_DECL).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37815