[llvm-commits] [llvm-gcc-4.2] r43135 - in /llvm-gcc-4.2/trunk/gcc: config/rs6000/darwin-ldouble.c config/rs6000/darwin-libgcc.10.4.ver config/rs6000/darwin-libgcc.10.5.ver config/rs6000/darwin.h llvm-convert.cpp

Thu Oct 18 10:12:35 PDT 2007

Author: johannes
Date: Thu Oct 18 12:12:34 2007
New Revision: 43135

URL: http://llvm.org/viewvc/llvm-project?rev=43135&view=rev
Log:
Enable 128-bit long double on PPC darwin.
Remove hacks in library functions and build which
worked around its absence. 

This changes the ABI.  Also note that some functions
in libgcc now have a different interface, so make
sure you build and pick up the right ones.

Make double constants work on big-endian host/big-endian
target (cross compile to the other endianness is broken).


Modified:
    llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-ldouble.c
    llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.4.ver
    llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.5.ver
    llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin.h
    llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp

Modified: llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-ldouble.c
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-ldouble.c?rev=43135&r1=43134&r2=43135&view=diff

==============================================================================

--- llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-ldouble.c (original)
+++ llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-ldouble.c Thu Oct 18 12:12:34 2007
@@ -165,11 +165,7 @@
   
   /* Use fused multiply-add to get low part of a * c.  */
 #ifndef _SOFT_FLOAT
-/* LLVM LOCAL begin */
-#ifndef __llvm__  /* FIXME: no long double support! */
   asm ("fmsub %0,%1,%2,%3" : "=f"(tau) : "f"(a), "f"(c), "f"(t));
-#endif
-/* LLVM LOCAL end */
 #else
   tau = fmsub (a, c, t);
 #endif
@@ -206,11 +202,7 @@
   
   /* Use fused multiply-add to get low part of c * t.	 */
 #ifndef _SOFT_FLOAT
-/* LLVM LOCAL begin */
-#ifndef __llvm__  /* FIXME: no long double support! */
   asm ("fmsub %0,%1,%2,%3" : "=f"(sigma) : "f"(c), "f"(t), "f"(s));
-#endif
-/* LLVM LOCAL end */
 #else
   sigma = fmsub (c, t, s);
 #endif

Modified: llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.4.ver
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.4.ver?rev=43135&r1=43134&r2=43135&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.4.ver (original)
+++ llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.4.ver Thu Oct 18 12:12:34 2007
@@ -35,18 +35,15 @@
 ___ffsdi2
 ___fixdfdi
 ___fixsfdi
-# LLVM LOCAL FIXME!
-#___fixtfdi
+___fixtfdi
 ___fixunsdfdi
 ___fixunsdfsi
 ___fixunssfdi
 ___fixunssfsi
-# LLVM LOCAL FIXME!
-#___fixunstfdi
+___fixunstfdi
 ___floatdidf
 ___floatdisf
-# LLVM LOCAL FIXME!
-#___floatditf
+___floatditf
 ___gcc_personality_v0
 ___gcc_qadd
 ___gcc_qdiv

Modified: llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.5.ver
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.5.ver?rev=43135&r1=43134&r2=43135&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.5.ver (original)
+++ llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin-libgcc.10.5.ver Thu Oct 18 12:12:34 2007
@@ -34,24 +34,20 @@
 ___divdc3
 ___divdi3
 ___divsc3
-# LLVM LOCAL FIXME!
-#___divtc3
+___divtc3
 ___enable_execute_stack
 ___ffsdi2
 ___fixdfdi
 ___fixsfdi
-# LLVM LOCAL FIXME!
-#___fixtfdi
+___fixtfdi
 ___fixunsdfdi
 ___fixunsdfsi
 ___fixunssfdi
 ___fixunssfsi
-# LLVM LOCAL FIXME!
-#___fixunstfdi
+___fixunstfdi
 ___floatdidf
 ___floatdisf
-# LLVM LOCAL FIXME!
-#___floatditf
+___floatditf
 ___floatundidf
 ___floatundisf
 ___floatunditf
@@ -65,8 +61,7 @@
 ___muldc3
 ___muldi3
 ___mulsc3
-# LLVM LOCAL FIXME!
-#___multc3
+___multc3
 ___mulvdi3
 ___mulvsi3
 ___negdi2
@@ -78,8 +73,7 @@
 ___popcountsi2
 ___powidf2
 ___powisf2
-# LLVM LOCAL FIXME!
-#___powitf2
+___powitf2
 ___register_frame
 ___register_frame_info
 ___register_frame_info_bases

Modified: llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin.h
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin.h?rev=43135&r1=43134&r2=43135&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin.h (original)
+++ llvm-gcc-4.2/trunk/gcc/config/rs6000/darwin.h Thu Oct 18 12:12:34 2007
@@ -95,15 +95,7 @@
    consistency; arithmetic will work even if libc and libm support is
    not available.  */
 
-/* LLVM LOCAL begin */
-#ifndef ENABLE_LLVM
 #define RS6000_DEFAULT_LONG_DOUBLE_SIZE 128
-#else
-/* FIXME: no long double support yet! */
-#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 64
-#endif
-/* LLVM LOCAL end */
-
 
 /* We want -fPIC by default, unless we're using -static to compile for
    the kernel or some such.  */

Modified: llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp?rev=43135&r1=43134&r2=43135&view=diff

==============================================================================
--- llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp (original)
+++ llvm-gcc-4.2/trunk/gcc/llvm-convert.cpp Thu Oct 18 12:12:34 2007
@@ -5236,10 +5236,11 @@
     UArr[0] = RealArr[0];   // Long -> int convert
     UArr[1] = RealArr[1];
 
-    // FIXME: verify on big-endian targets and cross from big- to little- endian
-    // targets
-    if (FLOAT_WORDS_BIG_ENDIAN)
-      std::swap(UArr[0], UArr[1]);
+    // We want to switch the words of UArr if host and target endianness 
+    // do not match.  FLOAT_WORDS_BIG_ENDIAN describes the target endianness.
+    // The host's used to be available in HOST_WORDS_BIG_ENDIAN, but the gcc
+    // maintainers removed this in a fit of cleanliness between 4.0 
+    // and 4.2. For now, host and target endianness must match.
 
     return ConstantFP::get(Ty, Ty==Type::FloatTy ? APFloat((float)V)
                                                  : APFloat(V));



