emit-rtl.c (gen_lowpart_common): Do not assume that SFmode and DFmode are UNITS_PER_W...

2001-06-19  Eric Christopher <echristo@redhat.com>

	* emit-rtl.c (gen_lowpart_common): Do not assume that SFmode
	and DFmode are UNITS_PER_WORD and 2*UNITS_PER_WORD.  Use
	GET_MODE_BITSIZE instead of GET_MODE_SIZE/UNITS_PER_WORD.

From-SVN: r43454

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d0e6541ee5757daf66b4cdcaf2dfcfe39cd7c949..3afd65219ce165d9fef6526f18d01412d3a050ce 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2001-06-19  Eric Christopher <echristo@redhat.com>
+
+       * emit-rtl.c (gen_lowpart_common): Do not assume that SFmode
+       and DFmode are UNITS_PER_WORD and 2*UNITS_PER_WORD.  Use
+       GET_MODE_BITSIZE instead of GET_MODE_SIZE/UNITS_PER_WORD.
+
 Tue Jun 19 01:52:27 2001  J"orn Rennecke <amylaar@redhat.com>
 
        * sh.c (output_branch): Delete bogus code.
@@ -220,11 +226,11 @@ Thu Jun 14 12:44:15 CEST 2001  Jan Hubicka  <jh@suse.cz>
 2001-06-13  Zack Weinberg  <zackw@stanford.edu>
 
        * Makefile.in: Move _bb and __gcc_bcmp to LIB2FUNCS_ST.
-       * libgcc-std.ver: Take out __bb* and __gcc_bcmp.                        
+       * libgcc-std.ver: Take out __bb* and __gcc_bcmp.
 
        * config/t-slibgcc-elf-ver, config/t-slibgcc-sld,
        config/alpha/t-osf4, config/mips/t-iris6: Extract all
-       references to @shlib_map_file@, @shlib_objs@, or     
+       references to @shlib_map_file@, @shlib_objs@, or
        @shlib_base_name@ to Makefile variables.
        Bump soname version of libgcc to 1.
 
@@ -256,7 +262,7 @@ Thu Jun 14 12:44:15 CEST 2001  Jan Hubicka  <jh@suse.cz>
        Revert this patch:
        * toplev.c (rest_of_compilation): Remove dead code before
        purge_addressof.
-       
+
 2001-06-12  Alexandre Oliva  <aoliva@redhat.com>
 
        Reverted:
@@ -366,8 +372,8 @@ Tue Jun 12 12:20:12 CEST 2001  Jan Hubicka  <jh@suse.cz>
 
 2001-06-11  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 
-       * config/m68hc11/m68hc11.md ("*lshrdi3_const32"): Mark the clobber 
-       as an early clobber to make sure it is not used by reload in 
+       * config/m68hc11/m68hc11.md ("*lshrdi3_const32"): Mark the clobber
+       as an early clobber to make sure it is not used by reload in
        one of the operands.
 
 2001-06-11  Mark Mitchell  <mark@codesourcery.com>
@@ -459,13 +465,13 @@ Tue Jun 12 12:20:12 CEST 2001  Jan Hubicka  <jh@suse.cz>
        * configure.in: Align --help messages.
        Remove trailing full stops.
        Consistently use lower case.
-       Fix DWARF 2 spelling.   
+       Fix DWARF 2 spelling.
        * configure: Rebuilt.
 
 2001-06-11  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>
 
        * config/alpha/alpha.h (CPP_SPEC): Don't define __LANGUAGE_C and
-       variants for .cpp/.cp/.c++ files. 
+       variants for .cpp/.cp/.c++ files.
        Move definition of __LANGUAGE_C_PLUS_PLUS ...
        (CPLUSPLUS_CPP_SPEC): ... here.
 
@@ -538,7 +544,7 @@ Mon Jun 11 15:47:45 CEST 2001  Jan Hubicka  <jh@suse.cz>
        * config/alpha/alpha.c (override_options): Set align_loops,
        align_jumps, and align_functions.
        * config/alpha/alpha.h (FUNCTION_BOUNDARY): Set to 32 bits.
-       (LOOP_ALIGN, LABEL_ALIGN_AFTER_BARRIER): Remove.  
+       (LOOP_ALIGN, LABEL_ALIGN_AFTER_BARRIER): Remove.
 
 2001-06-11  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>
 
@@ -567,13 +573,13 @@ Mon Jun 11 15:47:45 CEST 2001  Jan Hubicka  <jh@suse.cz>
        * dwarf2out.c: #include diagnostic.h
 
        * toplev.h (warningcount, errorcount, sorrycount): Remove
-       declarations. 
+       declarations.
 
        * toplev.c (warningcount, errorcount, sorrycount): Remove
-       definitions. 
+       definitions.
 
        * diagnostic.h (struct output_buffer): Reorder fields.
-       (diagnostic_kind_count): New macro.     
+       (diagnostic_kind_count): New macro.
        (errorcount, warningcount, sorrycount): Define as macros.
        (diagnostic_report_warnings_p): New macro.
        (output_state): Add diagnostic_count field.
@@ -593,12 +599,12 @@ Mon Jun 11 15:47:45 CEST 2001  Jan Hubicka  <jh@suse.cz>
 
 2001-06-10  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 
-       * config/m68hc11/m68hc11-protos.h (m68hc11_initialize_trampoline): 
+       * config/m68hc11/m68hc11-protos.h (m68hc11_initialize_trampoline):
        Move definition in the RTX_CODE section.
 
 2001-06-10  Stephane Carrez  <Stephane.Carrez@worldnet.fr>
 
-       * config/m68hc11/m68hc11.h (RETURN_ADDR_RTX): Define the return 
+       * config/m68hc11/m68hc11.h (RETURN_ADDR_RTX): Define the return
        address as relative to the argument pointer.
 
 Sun Jun 10 10:58:53 CEST 2001  Jan Hubicka  <jh@suse.cz>
@@ -632,7 +638,7 @@ Sun Jun 10 10:00:17 CEST 2001  Jan Hubicka  <jh@suse.cz>
 
        * toplev.c (rest_of_compilation): Remove dead code before
        purge_addressof.
-       
+
 2001-06-09  Neil Booth  <neil@daikokuya.demon.co.uk>
 
        * cppinit.c (print_help): Document -fpreprocessed.
@@ -837,7 +843,7 @@ Thu Jun  7 18:27:53 CEST 2001  Jan Hubicka  <jh@suse.cz>
        * config/darwin-protos.h: Declare it.
        * config/rs6000/rs6000.c (machopic_output_stub): Use
        STRIP_NAME_ENCODING.
-       
+
 2001-06-07  Mark Mitchell  <mark@codesourcery.com>
 
        * tree.h (DECL_SOURCE_FILE): Improve documentation.
@@ -1025,7 +1031,7 @@ Wed Jun  6 14:51:05 CEST 2001  Jan Hubicka  <jh@suse.cz>
        indent.
        * toplev.c (main): Disable sibling-call optimization if we are
        handling exceptions.
-       
+
 2001-06-05  Bernd Schmidt  <bernds@redhat.com>
 
        * reload1.c (reload): Delete all USEs generated during reload.

diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index 03bc62fafa5239d71bbbab559fcd23b019fd4fa2..c4f5be394238da413eb2db3b5be92391f838cd68 100644 (file)
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -900,9 +900,11 @@ gen_lowpart_common (mode, x)
      FP and integer operands.  This simplifies reload because it
      doesn't have to deal with constructs like (subreg:DI
      (const_double:SF ...)) or (subreg:DF (const_int ...)).  */
+  /* Single-precision floats are always 32-bits and double-precision
+     floats are always 64-bits.  */
 
   else if (GET_MODE_CLASS (mode) == MODE_FLOAT
-          && GET_MODE_SIZE (mode) == UNITS_PER_WORD
+          && GET_MODE_BITSIZE (mode) == 32
           && GET_CODE (x) == CONST_INT)
   {
       REAL_VALUE_TYPE r;
@@ -913,7 +915,7 @@ gen_lowpart_common (mode, x)
       return CONST_DOUBLE_FROM_REAL_VALUE (r, mode);
   }
   else if (GET_MODE_CLASS (mode) == MODE_FLOAT
-          && GET_MODE_SIZE (mode) == 2 * UNITS_PER_WORD
+          && GET_MODE_BITSIZE (mode) == 64
           && (GET_CODE (x) == CONST_INT || GET_CODE (x) == CONST_DOUBLE)
           && GET_MODE (x) == VOIDmode)
     {
@@ -952,20 +954,20 @@ gen_lowpart_common (mode, x)
       int endian = WORDS_BIG_ENDIAN ? 1 : 0;
 
       REAL_VALUE_FROM_CONST_DOUBLE (r, x);
-      switch (GET_MODE_SIZE (GET_MODE (x)) / UNITS_PER_WORD)
+      switch (GET_MODE_BITSIZE (GET_MODE (x)))
        {
-       case 1:
+       case 32:
          REAL_VALUE_TO_TARGET_SINGLE (r, i[endian]);
          i[1 - endian] = 0;
          break;
-       case 2:
+       case 64:
          REAL_VALUE_TO_TARGET_DOUBLE (r, i);
          break;
-       case 3:
+       case 96:
          REAL_VALUE_TO_TARGET_LONG_DOUBLE (r, i + endian);
          i[3-3*endian] = 0;
          break;
-       case 4:
+       case 128:
          REAL_VALUE_TO_TARGET_LONG_DOUBLE (r, i);
          break;
        default:
@@ -986,15 +988,15 @@ gen_lowpart_common (mode, x)
        for (c = 0; c < 4; c++)
          i[c] &= ~ (0L);
 
-       switch (GET_MODE_SIZE (GET_MODE (x)) / UNITS_PER_WORD)
+       switch (GET_MODE_BITSIZE (GET_MODE (x)))
          {
-         case 1:
-         case 2:
+         case 32:
+         case 64:
            return immed_double_const (((unsigned long) i[endian]) |
                                       (((HOST_WIDE_INT) i[1-endian]) << 32),
                                       0, mode);
-         case 3:
-         case 4:
+         case 96:
+         case 128:
            return immed_double_const (((unsigned long) i[endian*3]) |
                                       (((HOST_WIDE_INT) i[1+endian]) << 32),
                                       ((unsigned long) i[2-endian]) |