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author | Richard Biener <rguenther@suse.de> | 2024-01-15 13:09:48 +0100 |
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committer | Richard Biener <rguenther@suse.de> | 2024-01-23 08:08:27 +0100 |
commit | 23ebb09ed2e88c1f292d4232c1fd2974cc5c79e6 (patch) | |
tree | 00386cd17b525c6ec90be22d173c281104d5b137 /gcc/alias.cc | |
parent | a98d5130a6dcff2ed4db371e500550134777b8cf (diff) | |
download | gcc-23ebb09ed2e88c1f292d4232c1fd2974cc5c79e6.zip gcc-23ebb09ed2e88c1f292d4232c1fd2974cc5c79e6.tar.gz gcc-23ebb09ed2e88c1f292d4232c1fd2974cc5c79e6.tar.bz2 |
find_base_value part
The following adjusts find_base_value similar as to what
find_base_term was adjusted for PR113255.
* alias.cc (known_base_value_p): Remove.
(find_base_value): Remove PLUS/MINUS handling
when both operands are not CONST_INT_P.
Diffstat (limited to 'gcc/alias.cc')
-rw-r--r-- | gcc/alias.cc | 62 |
1 files changed, 4 insertions, 58 deletions
diff --git a/gcc/alias.cc b/gcc/alias.cc index 6fad4b2..808e209 100644 --- a/gcc/alias.cc +++ b/gcc/alias.cc @@ -1400,26 +1400,6 @@ unique_base_value_p (rtx x) return GET_CODE (x) == ADDRESS && GET_MODE (x) == Pmode; } -/* Return true if X is known to be a base value. */ - -static bool -known_base_value_p (rtx x) -{ - switch (GET_CODE (x)) - { - case LABEL_REF: - case SYMBOL_REF: - return true; - - case ADDRESS: - /* Arguments may or may not be bases; we don't know for sure. */ - return GET_MODE (x) != VOIDmode; - - default: - return false; - } -} - /* Inside SRC, the source of a SET, find a base address. */ static rtx @@ -1490,46 +1470,12 @@ find_base_value (rtx src) case PLUS: case MINUS: { - rtx temp, src_0 = XEXP (src, 0), src_1 = XEXP (src, 1); - - /* If either operand is a REG that is a known pointer, then it - is the base. */ - if (REG_P (src_0) && REG_POINTER (src_0)) - return find_base_value (src_0); - if (REG_P (src_1) && REG_POINTER (src_1)) - return find_base_value (src_1); - - /* If either operand is a REG, then see if we already have - a known value for it. */ - if (REG_P (src_0)) - { - temp = find_base_value (src_0); - if (temp != 0) - src_0 = temp; - } - - if (REG_P (src_1)) - { - temp = find_base_value (src_1); - if (temp!= 0) - src_1 = temp; - } - - /* If either base is named object or a special address - (like an argument or stack reference), then use it for the - base term. */ - if (src_0 != 0 && known_base_value_p (src_0)) - return src_0; - - if (src_1 != 0 && known_base_value_p (src_1)) - return src_1; + rtx src_0 = XEXP (src, 0), src_1 = XEXP (src, 1); - /* Guess which operand is the base address: - If either operand is a symbol, then it is the base. If - either operand is a CONST_INT, then the other is the base. */ - if (CONST_INT_P (src_1) || CONSTANT_P (src_0)) + /* If either operand is a CONST_INT, then the other is the base. */ + if (CONST_INT_P (src_1)) return find_base_value (src_0); - else if (CONST_INT_P (src_0) || CONSTANT_P (src_1)) + else if (CONST_INT_P (src_0)) return find_base_value (src_1); return 0; |