| From 1a9dcdb578452ecd53e0aec65fe6279233218778 Mon Sep 17 00:00:00 2001 |
| From: Mahesh Bodapati <mbodapat@xilinx.com> |
| Date: Sat, 26 Aug 2017 19:21:26 -0700 |
| Subject: [PATCH] Fix the Microblaze crash with msmall-divides flag |
| |
| Fix the Microblaze crash with msmall-divides flag Compiler is crashing |
| when we use msmall-divides and mxl-barrel-shift flag. This is because |
| when use above flags microblaze_expand_divide function will be called |
| for division operation. In microblaze_expand_divide function we are |
| using sub_reg but MicroBlaze doesn't have subreg register due to this |
| compiler was crashing. Changed the logic to avoid sub_reg call |
| |
| Signed-off-by: Nagaraju Mekala <nagaraju.mekala@xilinx.com> |
| Signed-off-by: Mahesh Bodapati <mbodapat@xilinx.com> |
| Signed-off-by: Manjukumar Matha <manjukumar.harthikote-matha@xilinx.com> |
| Upstream-Status: Pending |
| --- |
| gcc/config/microblaze/microblaze.c | 3 +-- |
| 1 file changed, 1 insertion(+), 2 deletions(-) |
| |
| diff --git a/gcc/config/microblaze/microblaze.c b/gcc/config/microblaze/microblaze.c |
| index bba6983b65..15080db539 100644 |
| --- a/gcc/config/microblaze/microblaze.c |
| +++ b/gcc/config/microblaze/microblaze.c |
| @@ -3527,8 +3527,7 @@ microblaze_expand_divide (rtx operands[]) |
| mem_rtx = gen_rtx_MEM (QImode, |
| gen_rtx_PLUS (Pmode, regt1, div_table_rtx)); |
| |
| - insn = emit_insn (gen_movqi (regqi, mem_rtx)); |
| - insn = emit_insn (gen_movsi (operands[0], gen_rtx_SUBREG (SImode, regqi, 0))); |
| + insn = emit_insn (gen_zero_extendqisi2(operands[0],mem_rtx)); |
| jump = emit_jump_insn_after (gen_jump (div_end_label), insn); |
| JUMP_LABEL (jump) = div_end_label; |
| LABEL_NUSES (div_end_label) = 1; |
| -- |
| 2.14.2 |
| |