Hi!
My earlier attempts to replace bogus inline asm with something that
reg-stack.c would be happy about failed, so this is just a quick hack to
help the error-recovery on the pr84828.C testcase with -m32.
I bet bunch of other spots will need any_malformed_asm tweaks, just don't
have testcases for those.
Bootstrapped/regtested on x86_64-linux and i686-linux, fixes:
-FAIL: g++.dg/ext/pr84828.C -std=gnu++11 (internal compiler error)
-FAIL: g++.dg/ext/pr84828.C -std=gnu++11 (test for excess errors)
-FAIL: g++.dg/ext/pr84828.C -std=gnu++14 (internal compiler error)
-FAIL: g++.dg/ext/pr84828.C -std=gnu++14 (test for excess errors)
-FAIL: g++.dg/ext/pr84828.C -std=gnu++98 (internal compiler error)
-FAIL: g++.dg/ext/pr84828.C -std=gnu++98 (test for excess errors)
on i686-linux, ok for trunk?
2018-04-23 Jakub Jelinek <ja...@redhat.com>
PR target/84828
* reg-stack.c (move_for_stack_reg): Don't fail assertion about dead
destination if any_malformed_asm.
--- gcc/reg-stack.c.jj 2018-03-16 13:42:37.118852524 +0100
+++ gcc/reg-stack.c 2018-04-23 17:16:41.085198214 +0200
@@ -1105,13 +1105,16 @@ move_for_stack_reg (rtx_insn *insn, stac
}
/* The destination ought to be dead. */
- gcc_assert (get_hard_regnum (regstack, dest) < FIRST_STACK_REG);
+ if (get_hard_regnum (regstack, dest) >= FIRST_STACK_REG)
+ gcc_assert (any_malformed_asm);
+ else
+ {
+ replace_reg (psrc, get_hard_regnum (regstack, src));
- replace_reg (psrc, get_hard_regnum (regstack, src));
-
- regstack->reg[++regstack->top] = REGNO (dest);
- SET_HARD_REG_BIT (regstack->reg_set, REGNO (dest));
- replace_reg (pdest, FIRST_STACK_REG);
+ regstack->reg[++regstack->top] = REGNO (dest);
+ SET_HARD_REG_BIT (regstack->reg_set, REGNO (dest));
+ replace_reg (pdest, FIRST_STACK_REG);
+ }
}
else if (STACK_REG_P (src))
{
Jakub
