On 11/25/13 23:53, David Holsgrove wrote:
Hi Michael,I've attached patch based on latest gcc master. Please apply when ready. Changelog 2013-11-26 David Holsgrove <david.holsgr...@xilinx.com> * gcc/config/microblaze/predicates.md: Add cmp_op predicate. * gcc/config/microblaze/microblaze.md: Add branch_compare instruction which uses cmp_op predicate and emits cmp insn before branch. * gcc/config/microblaze/microblaze.c (microblaze_emit_compare): Rename to microblaze_expand_conditional_branch and consolidate logic. (microblaze_expand_conditional_branch): emit branch_compare insn instead of handling cmp op separate from branch insn. thanks, David On 15 July 2013 14:58, David Holsgrove <david.holsgr...@xilinx.com> wrote:To facilitate optimization pass understanding of the conditional branch for microblaze, remove the UNSPEC'd signed_compare / unsigned_compare instructions, and replace with a complete branch_compare which will output_asm_insn the correct cmp/cmpu depending on comparison code and signed / unsigned. We then return the correct branch instruction. cbranchsi now calls an expanded microblaze_expand_conditional_branch function which will carry out compare against zero, compare EQ/NE, and all other compares appropriately. -funroll-loops optimization pass can now proceed Changelog 2013-07-15 David Holsgrove <david.holsgr...@xilinx.com> * gcc/config/microblaze/predicates.md: Add cmp_op predicate. * gcc/config/microblaze/microblaze.md: Add branch_compare instruction which uses cmp_op predicate and emits cmp insn before branch. * gcc/config/microblaze/microblaze.c (microblaze_emit_compare): Rename to microblaze_expand_conditional_branch and consolidate logic. (microblaze_expand_conditional_branch): emit branch_compare insn instead of handling cmp op separate from branch insn. thanks, David
gcc-head: Committed revision 208055. gcc-4_8_branch: Committed revision 208056. -- Michael Eager ea...@eagercon.com 1960 Park Blvd., Palo Alto, CA 94306 650-325-8077
