From bfe57ab76a1ec5a46cf5af5a07554a51816ccffd Mon Sep 17 00:00:00 2001 From: sayle Date: Mon, 3 Feb 2003 19:40:58 +0000 Subject: * hooks.c (hook_rtx_rtx_identity): Generic hook function that takes a single rtx and returns it unmodified. * hooks.h (hook_rtx_rtx_identity): Prototype here. * target.h (struct gcc_target): Add "delegitimize_address" field to target structure. * target-def.h (TARGET_DELEGITIMIZE_ADDRESS): Provide default for delegitimize_address target using hook_rtx_rtx_identity. (TARGET_INITIALIZER): Initialize delegitimize_address field using TARGET_DELEGITIMIZE_ADDRESS macro. * simplify-rtx.c (avoid_constant_pool_reference): Handle float extensions of constant pool references. Use delegitimize_address to undo the obfuscation of "-fpic". * Makefile.in (simplify-rtx.o): Add dependency on target.h. * config/i386/i386.c (TARGET_DELEGITIMIZE_ADDRESS): Define as i386_simplify_dwarf_addr. (ix86_find_base_term): Simplify using i386_simplify_dwarf_addr. (maybe_get_pool_constant): Likewise. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@62336 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/simplify-rtx.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) (limited to 'gcc/simplify-rtx.c') diff --git a/gcc/simplify-rtx.c b/gcc/simplify-rtx.c index 47dd7a07038..19d664b14fb 100644 --- a/gcc/simplify-rtx.c +++ b/gcc/simplify-rtx.c @@ -38,6 +38,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #include "toplev.h" #include "output.h" #include "ggc.h" +#include "target.h" /* Simplification and canonicalization of RTL. */ @@ -106,13 +107,36 @@ rtx avoid_constant_pool_reference (x) rtx x; { - rtx c, addr; + rtx c, tmp, addr; enum machine_mode cmode; - if (GET_CODE (x) != MEM) - return x; + switch (GET_CODE (x)) + { + case MEM: + break; + + case FLOAT_EXTEND: + /* Handle float extensions of constant pool references. */ + tmp = XEXP (x, 0); + c = avoid_constant_pool_reference (tmp); + if (c != tmp && GET_CODE (c) == CONST_DOUBLE) + { + REAL_VALUE_TYPE d; + + REAL_VALUE_FROM_CONST_DOUBLE (d, c); + return CONST_DOUBLE_FROM_REAL_VALUE (d, GET_MODE (x)); + } + return x; + + default: + return x; + } + addr = XEXP (x, 0); + /* Call target hook to avoid the effects of -fpic etc... */ + addr = (*targetm.delegitimize_address) (addr); + if (GET_CODE (addr) == LO_SUM) addr = XEXP (addr, 1); -- cgit v1.2.1