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riscv-gcc-1
Commit cf641ce6 by Joern Rennecke
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(calc_live_regs): need not save MACL/MACH when not live, and in leaf function. 

From-SVN: r13627
parent f3e9068e
Showing with 3 additions and 4 deletions
gcc/config/sh/sh.c
...@@ -2590,10 +2590,9 @@ calc_live_regs (count_ptr, live_regs_mask2) ...@@ -2590,10 +2590,9 @@ calc_live_regs (count_ptr, live_regs_mask2)
{ {
/* Need to save all the regs ever live. */ /* Need to save all the regs ever live. */
if ((regs_ever_live[reg] if ((regs_ever_live[reg]
|| (call_used_regs[reg] && ! fixed_regs[reg] || (call_used_regs[reg]
&& regs_ever_live[PR_REG]) && (! fixed_regs[reg] || reg == MACH_REG || reg == MACL_REG)
|| reg == MACH_REG && regs_ever_live[PR_REG]))
|| reg == MACL_REG)
&& reg != STACK_POINTER_REGNUM && reg != ARG_POINTER_REGNUM && reg != STACK_POINTER_REGNUM && reg != ARG_POINTER_REGNUM
&& reg != RETURN_ADDRESS_POINTER_REGNUM && reg != RETURN_ADDRESS_POINTER_REGNUM
&& reg != T_REG && reg != GBR_REG) && reg != T_REG && reg != GBR_REG)
......
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