complex: Directly emit gimple from extract_component [PR121661]HEADtrunkmaster

Currently extract_component uses force_gimple_operand_gsi to emit
gimple including loads. The problem with that decls that have
DECL_EXPR_DECL set on it will change over to use the DECL_EXPR_DECL instead.
Normally this is ok except for nested functions where the original decl
is a PARAM_DECL, there is a copy from the param decl to the new frame based
location.
Well instead we should just create the gimple ourselves.
The only special case that needs to be handled is BIT_FIELD_REF and
a VCE of SSA_NAME. BIT_FIELD_REF was already handled specially
so we can just emit the load there. VCE of SSA_NAME on the other
hand needed some extra code.

Note VCE of s SSA_NAME case could be optimized, I filed PR 123968
for that. Since that is not a regression at this point and we are
now producing the same code as before.

Bootstrapped and tested on x86_64-linux-gnu.

	PR middle-end/121661

gcc/ChangeLog:

	* tree-complex.cc (extract_component): Create gimple
	assign statements directly rather than call force_gimple_operand_gsi.

gcc/testsuite/ChangeLog:

	* gcc.dg/torture/pr121661-1.c: New test.

Signed-off-by: Andrew Pinski <andrew.pinski@oss.qualcomm.com>

0 files changed, 0 insertions, 0 deletions