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riscv-gcc-1
Commit e4329280 by Richard Kenner
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(propagate_block): CALL_INSNs don't kill fixed regs. 

From-SVN: r11646
parent dc1d6150
Showing with 3 additions and 2 deletions
gcc/flow.c
...@@ -1622,12 +1622,13 @@ propagate_block (old, first, last, final, significant, bnum) ...@@ -1622,12 +1622,13 @@ propagate_block (old, first, last, final, significant, bnum)
final, insn); final, insn);
/* Each call clobbers all call-clobbered regs that are not /* Each call clobbers all call-clobbered regs that are not
global. Note that the function-value reg is a global or fixed. Note that the function-value reg is a
call-clobbered reg, and mark_set_regs has already had call-clobbered reg, and mark_set_regs has already had
a chance to handle it. */ a chance to handle it. */
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++) for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
if (call_used_regs[i] && ! global_regs[i]) if (call_used_regs[i] && ! global_regs[i]
&& ! fixed_regs[i])
dead[i / REGSET_ELT_BITS] dead[i / REGSET_ELT_BITS]
|= ((REGSET_ELT_TYPE) 1 << (i % REGSET_ELT_BITS)); |= ((REGSET_ELT_TYPE) 1 << (i % REGSET_ELT_BITS));
......
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