Module Name: src
Committed By: kalvisd
Date: Sun Sep 29 11:49:43 UTC 2024
Modified Files:
src/external/gpl3/gcc/dist/gcc/config/vax: vax.cc
Log Message:
gcc: vax: revise the expressions that may be valid index terms on VAX
Multiplication of a constant and a register is commutative but the
same is not true for left shifts. Only expressions where a register
is shifted by a constant (and that where the constant is equal to
the word size for the operand) can be valid index terms.
OK rin@
To generate a diff of this commit:
cvs rdiff -u -r1.8 -r1.9 src/external/gpl3/gcc/dist/gcc/config/vax/vax.cc
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/external/gpl3/gcc/dist/gcc/config/vax/vax.cc
diff -u src/external/gpl3/gcc/dist/gcc/config/vax/vax.cc:1.8 src/external/gpl3/gcc/dist/gcc/config/vax/vax.cc:1.9
--- src/external/gpl3/gcc/dist/gcc/config/vax/vax.cc:1.8 Sun Sep 29 11:45:31 2024
+++ src/external/gpl3/gcc/dist/gcc/config/vax/vax.cc Sun Sep 29 11:49:43 2024
@@ -1916,7 +1916,6 @@ static bool
index_term_p (rtx prod, machine_mode mode, bool strict)
{
rtx xfoo0, xfoo1;
- bool log_p;
if (GET_MODE_SIZE (mode) == 1)
return BASE_REGISTER_P (prod, strict);
@@ -1925,18 +1924,24 @@ index_term_p (rtx prod, machine_mode mod
|| GET_MODE_SIZE (mode) > 8)
return false;
- log_p = GET_CODE (prod) == ASHIFT;
xfoo0 = XEXP (prod, 0);
xfoo1 = XEXP (prod, 1);
- if (!log_p
+ if (GET_CODE (prod) == MULT
&& CONST_INT_P (xfoo0)
&& GET_MODE_SIZE (mode) == INTVAL (xfoo0)
&& INDEX_REGISTER_P (xfoo1, strict))
return true;
- if (CONST_INT_P (xfoo1)
- && GET_MODE_SIZE (mode) == (log_p ? 1 << INTVAL (xfoo1) : INTVAL (xfoo1))
+ if (GET_CODE (prod) == MULT
+ && CONST_INT_P (xfoo1)
+ && GET_MODE_SIZE (mode) == INTVAL (xfoo1)
+ && INDEX_REGISTER_P (xfoo0, strict))
+ return true;
+
+ if (GET_CODE (prod) == ASHIFT
+ && CONST_INT_P (xfoo1)
+ && GET_MODE_SIZE (mode) == (1 << INTVAL (xfoo1))
&& INDEX_REGISTER_P (xfoo0, strict))
return true;
