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gcc43
gcc-power7-sles-11sp1.patch02c
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File gcc-power7-sles-11sp1.patch02c of Package gcc43
2009-10-15 Michael Meissner <meissner@linux.vnet.ibm.com> Pat Haugen <pthaugen@us.ibm.com> Revital Eres <ERES@il.ibm.com> Peter Bergner <bergner@vnet.ibm.com> Backport rs6000 changes from GCC 4.5 mainline to 4.3 that includes improved support for vector misalignment. 2009-09-17 Revital Eres <eres@il.ibm.com> * doc/tm.texi (TARGET_SUPPORT_VECTOR_MISALIGNMENT): Document. * targhooks.c (default_builtin_support_vector_misalignment): New builtin function. * targhooks.h (default_builtin_support_vector_misalignment): Declare. * target.h (builtin_support_vector_misalignment): New field in struct gcc_target. * tree-vectorizer.c (vect_supportable_dr_alignment): Call new builtin function. * target-def.h (TARGET_SUPPORT_VECTOR_MISALIGNMENT): Define. diff -rupN --exclude='*~' --exclude=autom4te.cache sles-11sp1-orig/gcc/target-def.h sles-11sp1/gcc/target-def.h --- sles-11sp1-orig/gcc/target-def.h 2008-06-30 07:54:13.000000000 -0400 +++ sles-11sp1/gcc/target-def.h 2009-10-13 13:01:47.000000000 -0400 @@ -364,6 +364,8 @@ #define TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST 0 #define TARGET_VECTOR_ALIGNMENT_REACHABLE \ default_builtin_vector_alignment_reachable +#define TARGET_SUPPORT_VECTOR_MISALIGNMENT \ + default_builtin_support_vector_misalignment #define TARGET_VECTORIZE \ { \ @@ -373,7 +375,8 @@ TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_EVEN, \ TARGET_VECTORIZE_BUILTIN_MUL_WIDEN_ODD, \ TARGET_VECTORIZE_BUILTIN_VECTORIZATION_COST, \ - TARGET_VECTOR_ALIGNMENT_REACHABLE \ + TARGET_VECTOR_ALIGNMENT_REACHABLE, \ + TARGET_SUPPORT_VECTOR_MISALIGNMENT \ } #define TARGET_DEFAULT_TARGET_FLAGS 0 diff -rupN --exclude='*~' --exclude=autom4te.cache sles-11sp1-orig/gcc/target.h sles-11sp1/gcc/target.h --- sles-11sp1-orig/gcc/target.h 2008-06-30 07:54:12.000000000 -0400 +++ sles-11sp1/gcc/target.h 2009-10-13 13:00:59.000000000 -0400 @@ -438,6 +438,11 @@ struct gcc_target /* Return true if vector alignment is reachable (by peeling N iterations) for the given type. */ bool (* vector_alignment_reachable) (const_tree, bool); + /* Return true if the target supports misaligned store/load of a + specific factor denoted in the third parameter. The last parameter + is true if the access is defined in a packed struct. */ + bool (* builtin_support_vector_misalignment) (enum machine_mode, + const_tree, int, bool); } vectorize; /* The initial value of target_flags. */ diff -rupN --exclude='*~' --exclude=autom4te.cache sles-11sp1-orig/gcc/targhooks.c sles-11sp1/gcc/targhooks.c --- sles-11sp1-orig/gcc/targhooks.c 2008-06-30 07:54:12.000000000 -0400 +++ sles-11sp1/gcc/targhooks.c 2009-10-13 13:00:36.000000000 -0400 @@ -691,6 +691,23 @@ tree default_mangle_decl_assembler_name return id; } +/* By default, assume that a target supports any factor of misalignment + memory access if it supports movmisalign patten. + is_packed is true if the memory access is defined in a packed struct. */ +bool +default_builtin_support_vector_misalignment (enum machine_mode mode, + const_tree type + ATTRIBUTE_UNUSED, + int misalignment + ATTRIBUTE_UNUSED, + bool is_packed + ATTRIBUTE_UNUSED) +{ + if (optab_handler (movmisalign_optab, mode)->insn_code != CODE_FOR_nothing) + return true; + return false; +} + bool default_builtin_vector_alignment_reachable (const_tree type, bool is_packed) { diff -rupN --exclude='*~' --exclude=autom4te.cache sles-11sp1-orig/gcc/targhooks.h sles-11sp1/gcc/targhooks.h --- sles-11sp1-orig/gcc/targhooks.h 2008-06-30 07:54:12.000000000 -0400 +++ sles-11sp1/gcc/targhooks.h 2009-10-13 13:00:47.000000000 -0400 @@ -70,6 +70,10 @@ extern tree default_builtin_vectorized_c extern tree default_builtin_reciprocal (enum built_in_function, bool, bool); extern bool default_builtin_vector_alignment_reachable (const_tree, bool); +extern bool +default_builtin_support_vector_misalignment (enum machine_mode mode, + const_tree, + int, bool); /* These are here, and not in hooks.[ch], because not all users of hooks.h include tm.h, and thus we don't have CUMULATIVE_ARGS. */ diff -rupN --exclude='*~' --exclude=autom4te.cache sles-11sp1-orig/gcc/tree-vectorizer.c sles-11sp1/gcc/tree-vectorizer.c --- sles-11sp1-orig/gcc/tree-vectorizer.c 2009-10-09 17:11:06.000000000 -0400 +++ sles-11sp1/gcc/tree-vectorizer.c 2009-10-13 13:01:17.000000000 -0400 @@ -1938,6 +1938,9 @@ vect_supportable_dr_alignment (struct da if (DR_IS_READ (dr)) { + bool is_packed = false; + tree type = (TREE_TYPE (DR_REF (dr))); + if (optab_handler (vec_realign_load_optab, mode)->insn_code != CODE_FOR_nothing && (!targetm.vectorize.builtin_mask_for_load @@ -1949,9 +1952,17 @@ vect_supportable_dr_alignment (struct da else return dr_explicit_realign_optimized; } + if (!known_alignment_for_access_p (dr)) + { + tree ba = DR_BASE_OBJECT (dr); + + if (ba) + is_packed = contains_packed_reference (ba); + } - if (optab_handler (movmisalign_optab, mode)->insn_code != - CODE_FOR_nothing) + if (targetm.vectorize. + builtin_support_vector_misalignment (mode, type, + DR_MISALIGNMENT (dr), is_packed)) /* Can't software pipeline the loads, but can at least do them. */ return dr_unaligned_supported; } diff -rupN --exclude='*~' --exclude=autom4te.cache sles-11sp1-orig/gcc/doc/tm.texi sles-11sp1/gcc/doc/tm.texi --- sles-11sp1-orig/gcc/doc/tm.texi 2009-10-09 17:15:53.000000000 -0400 +++ sles-11sp1/gcc/doc/tm.texi 2009-10-13 13:00:13.000000000 -0400 @@ -5541,6 +5541,14 @@ the vectorized function shall be of vect argument types should be @var{vec_type_in}. @end deftypefn +@deftypefn {Target Hook} bool TARGET_SUPPORT_VECTOR_MISALIGNMENT (enum machine_mode @var{mode}, tree @var{type}, int @var{misalignment}, bool @var{is_packed}) +This hook should return true if the target supports misaligned vector +store/load of a specific factor denoted in the @var{misalignment} +parameter. The vector store/load should be of machine mode @var{mode} and +the elements in the vectors should be of type @var{type}. @var{is_packed} +parameter is true if the memory access is defined in a packed struct. +@end deftypefn + @node Anchored Addresses @section Anchored Addresses @cindex anchored addresses
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