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LoongArch: Avoid RTL flag check failure in loongarch_classify_symbol

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SYMBOL_REF_TLS_MODEL invokes SYMBOL_REF_FLAGS, and SYMBOL_REF_FLAGS
invokes RTL_FLAG_CHECK1 and aborts when RTL code is not SYMBOL_REF.

r13-1833 removed "gcc_assert (SYMBOL_REF_P (x))" before invoking
"SYMBOL_REF_TLS_MODEL (x)", indicating that it's now possible that "x"
is not a SYMBOL_REF.  So we need to check if "x" is SYMBOL_REF first.

This fixes a test failure happening with r13-2173 with RTL flag
checking enabled:

    pr106096.C:26:1: internal compiler error: RTL flag check:
    SYMBOL_REF_FLAGS used with unexpected rtx code 'const' in
    loongarch_classify_symbol

gcc/ChangeLog:

	* config/loongarch/loongarch.cc (loongarch_classify_symbol):
	Return early if the rtx is not SYMBOL_REF.
This commit is contained in:
Xi Ruoyao 2022-08-24 21:31:34 +08:00
parent 818073fe9d
commit a45b7b19e1
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GPG Key ID: ACAAD20E19E710E3
1 changed files with 2 additions and 3 deletions
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5
gcc/config/loongarch/loongarch.cc
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@ -1633,14 +1633,13 @@ loongarch_rtx_constant_in_small_data_p (machine_mode mode)
static enum loongarch_symbol_type
loongarch_classify_symbol (const_rtx x)
{
if (LABEL_REF_P (x))
if (!SYMBOL_REF_P (x))
return SYMBOL_PCREL;
if (SYMBOL_REF_TLS_MODEL (x))
return SYMBOL_TLS;
if (SYMBOL_REF_P (x)
&& !loongarch_symbol_binds_local_p (x))
if (!loongarch_symbol_binds_local_p (x))
return SYMBOL_GOT_DISP;
return SYMBOL_PCREL;