https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66444
vries at gcc dot gnu.org changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |vries at gcc dot gnu.org
--- Comment #1 from vries at gcc dot gnu.org ---
Tentative patch:
...
diff --git a/gcc/postreload.c b/gcc/postreload.c
index 7ecca15..1cc7b14 100644
--- a/gcc/postreload.c
+++ b/gcc/postreload.c
@@ -1352,9 +1352,12 @@ reload_combine (void)
if (CALL_P (insn))
{
rtx link;
+ HARD_REG_SET used_regs;
+
+ get_call_reg_set_usage (insn, &used_regs, call_used_reg_set);
for (r = 0; r < FIRST_PSEUDO_REGISTER; r++)
- if (call_used_regs[r])
+ if (TEST_HARD_REG_BIT (used_regs, r))
{
reg_state[r].use_index = RELOAD_COMBINE_MAX_USES;
reg_state[r].store_ruid = reload_combine_ruid;
...
Output with patch:
...
movabsq $962072674304, %r8
salq $5, %rax
addq %rax, %r8
movq %r8, %rdi
call fn1
movq %r8, %rdi
call fn2
...
