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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-07-19 23:26:51 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2001-07-19 23:26:51 +0000 |
| commit | 3cc092f7e6b224108c9283ed6c5ef69121eddc2a (patch) | |
| tree | a9b47fb91c9fd09f19a418557090e5dd7abf596d /gcc/doc/tm.texi | |
| parent | 3fe4cd25d4598b79557f7c9c72e8d1c5355293c6 (diff) | |
| download | gcc-3cc092f7e6b224108c9283ed6c5ef69121eddc2a.tar.gz | |
* tm.texi (POINTERS_EXTEND_UNSIGNED) Modify definition.
* optabs.c (can_extend_p) Check HAVE_ptr_extend for a specialized
pointer extension instruction.
* combine.c (nonzero_bits,num_sign_bit_copies) Likewise.
* simplify-rtx.c (simplify_unary_operation) Likewise.
* explow.c (convert_memory_address) Check value of
POINTERS_EXTEND_UNSIGNED to avoid some conversions when
less than zero.
* config/ia64/t-hpux (LIBGCC, INSTALL_LIBGCC, MULTILIB_OPTIONS,
MULTILIB_DIRNAMES, MULTILIB_MATCHES) Add multilib support.
* config/ia64/hpux.h (CPP_SPEC, ASM_SPEC, SUBTARGET_SWITCHES)
Add Multilib Support.
(POINTERS_EXTEND_UNSIGNED) Define for ILP32 support.
* config/ia64/ia64.h (MASK_ILP32, TARGET_ILP32, SUBTARGET_SWITCHES)
Add Multilib Support.
(POINTER_SIZE, LONG_TYPE_SIZE, MAX_LONG_TYPE_SIZE) Modify for ILP32
support.
* config/ia64/ia64.c (rtx_needs_barrier) Add support for addp4.
* config/ia64/ia64.md (ptr_extend) New instruction to "swizzle"
a 32 bit HP-UX pointer into a 64 bit HP-UX pointer.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44166 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/doc/tm.texi')
| -rw-r--r-- | gcc/doc/tm.texi | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 6fcc3ba8a47..162dc9e4f96 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -954,9 +954,11 @@ you must define @code{POINTERS_EXTEND_UNSIGNED}. @findex POINTERS_EXTEND_UNSIGNED @item POINTERS_EXTEND_UNSIGNED -A C expression whose value is nonzero if pointers that need to be +A C expression whose value is greater than zero if pointers that need to be extended from being @code{POINTER_SIZE} bits wide to @code{Pmode} are to -be zero-extended and zero if they are to be sign-extended. +be zero-extended and zero if they are to be sign-extended. If the value +is less then zero then there must be an "ptr_extend" instruction that +extends a pointer from @code{POINTER_SIZE} to @code{Pmode}. You need not define this macro if the @code{POINTER_SIZE} is equal to the width of @code{Pmode}. |