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| author | Thomas Preud'homme <thomas.preudhomme@arm.com> | 2015-01-06 11:51:16 +0000 |
|---|---|---|
| committer | Thomas Preud'homme <thopre01@gcc.gnu.org> | 2015-01-06 11:51:16 +0000 |
| commit | e4a5735015888eaea5ec6964a3d879a1e61ea75a (patch) | |
| tree | 2d75dee25b815b763b4547ef9bd964c6dffd3b22 | |
| parent | 02169d7807750eba35013a832975df24bf309384 (diff) | |
| download | gcc-e4a5735015888eaea5ec6964a3d879a1e61ea75a.zip gcc-e4a5735015888eaea5ec6964a3d879a1e61ea75a.tar.gz gcc-e4a5735015888eaea5ec6964a3d879a1e61ea75a.tar.bz2 | |
re PR tree-optimization/63259 (Detecting byteswap sequence)
2015-01-06 Thomas Preud'homme <thomas.preudhomme@arm.com>
gcc/
PR tree-optimization/63259
* tree-ssa-math-opts.c (pass_optimize_bswap::execute): Stop checking
if optab exists for 16bit byteswap.
From-SVN: r219256
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/tree-ssa-math-opts.c | 19 |
2 files changed, 9 insertions, 16 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index daae241..4b3d6ca 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2015-01-06 Thomas Preud'homme <thomas.preudhomme@arm.com> + + PR tree-optimization/63259 + * tree-ssa-math-opts.c (pass_optimize_bswap::execute): Stop checking + if optab exists for 16bit byteswap. + 2015-01-06 Jakub Jelinek <jakub@redhat.com> * opts.c (common_handle_option): Add support for diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c index d9476b821..68da85a 100644 --- a/gcc/tree-ssa-math-opts.c +++ b/gcc/tree-ssa-math-opts.c @@ -2350,15 +2350,13 @@ unsigned int pass_optimize_bswap::execute (function *fun) { basic_block bb; - bool bswap16_p, bswap32_p, bswap64_p; + bool bswap32_p, bswap64_p; bool changed = false; - tree bswap16_type = NULL_TREE, bswap32_type = NULL_TREE, bswap64_type = NULL_TREE; + tree bswap32_type = NULL_TREE, bswap64_type = NULL_TREE; if (BITS_PER_UNIT != 8) return 0; - bswap16_p = (builtin_decl_explicit_p (BUILT_IN_BSWAP16) - && optab_handler (bswap_optab, HImode) != CODE_FOR_nothing); bswap32_p = (builtin_decl_explicit_p (BUILT_IN_BSWAP32) && optab_handler (bswap_optab, SImode) != CODE_FOR_nothing); bswap64_p = (builtin_decl_explicit_p (BUILT_IN_BSWAP64) @@ -2367,12 +2365,6 @@ pass_optimize_bswap::execute (function *fun) /* Determine the argument type of the builtins. The code later on assumes that the return and argument type are the same. */ - if (bswap16_p) - { - tree fndecl = builtin_decl_explicit (BUILT_IN_BSWAP16); - bswap16_type = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (fndecl))); - } - if (bswap32_p) { tree fndecl = builtin_decl_explicit (BUILT_IN_BSWAP32); @@ -2443,11 +2435,6 @@ pass_optimize_bswap::execute (function *fun) if (code == LROTATE_EXPR || code == RROTATE_EXPR) continue; load_type = uint16_type_node; - if (bswap16_p) - { - fndecl = builtin_decl_explicit (BUILT_IN_BSWAP16); - bswap_type = bswap16_type; - } break; case 32: load_type = uint32_type_node; @@ -2469,7 +2456,7 @@ pass_optimize_bswap::execute (function *fun) continue; } - if (bswap && !fndecl) + if (bswap && !fndecl && n.range != 16) continue; if (bswap_replace (cur_stmt, src_stmt, fndecl, bswap_type, load_type, |