diff options
Diffstat (limited to 'gcc/config/avr/avr.c')
| -rw-r--r-- | gcc/config/avr/avr.c | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/gcc/config/avr/avr.c b/gcc/config/avr/avr.c index 0fcec0dff1a..e52c5d85f6b 100644 --- a/gcc/config/avr/avr.c +++ b/gcc/config/avr/avr.c @@ -9973,6 +9973,14 @@ avr_out_movmem (rtx insn ATTRIBUTE_UNUSED, rtx *op, int *plen) /* Helper for __builtin_avr_delay_cycles */ +static rtx +avr_mem_clobber (void) +{ + rtx mem = gen_rtx_MEM (BLKmode, gen_rtx_SCRATCH (Pmode)); + MEM_VOLATILE_P (mem) = 1; + return mem; +} + static void avr_expand_delay_cycles (rtx operands0) { @@ -9984,7 +9992,8 @@ avr_expand_delay_cycles (rtx operands0) { loop_count = ((cycles - 9) / 6) + 1; cycles_used = ((loop_count - 1) * 6) + 9; - emit_insn (gen_delay_cycles_4 (gen_int_mode (loop_count, SImode))); + emit_insn (gen_delay_cycles_4 (gen_int_mode (loop_count, SImode), + avr_mem_clobber())); cycles -= cycles_used; } @@ -9994,7 +10003,8 @@ avr_expand_delay_cycles (rtx operands0) if (loop_count > 0xFFFFFF) loop_count = 0xFFFFFF; cycles_used = ((loop_count - 1) * 5) + 7; - emit_insn (gen_delay_cycles_3 (gen_int_mode (loop_count, SImode))); + emit_insn (gen_delay_cycles_3 (gen_int_mode (loop_count, SImode), + avr_mem_clobber())); cycles -= cycles_used; } @@ -10004,7 +10014,8 @@ avr_expand_delay_cycles (rtx operands0) if (loop_count > 0xFFFF) loop_count = 0xFFFF; cycles_used = ((loop_count - 1) * 4) + 5; - emit_insn (gen_delay_cycles_2 (gen_int_mode (loop_count, HImode))); + emit_insn (gen_delay_cycles_2 (gen_int_mode (loop_count, HImode), + avr_mem_clobber())); cycles -= cycles_used; } @@ -10014,7 +10025,8 @@ avr_expand_delay_cycles (rtx operands0) if (loop_count > 255) loop_count = 255; cycles_used = loop_count * 3; - emit_insn (gen_delay_cycles_1 (gen_int_mode (loop_count, QImode))); + emit_insn (gen_delay_cycles_1 (gen_int_mode (loop_count, QImode), + avr_mem_clobber())); cycles -= cycles_used; } |