diff options
Diffstat (limited to 'gcc-4.9/gcc/config/alpha/alpha.c')
| -rw-r--r-- | gcc-4.9/gcc/config/alpha/alpha.c | 49 |
1 files changed, 46 insertions, 3 deletions
diff --git a/gcc-4.9/gcc/config/alpha/alpha.c b/gcc-4.9/gcc/config/alpha/alpha.c index df4cc1b1c..dc07a02c0 100644 --- a/gcc-4.9/gcc/config/alpha/alpha.c +++ b/gcc-4.9/gcc/config/alpha/alpha.c @@ -62,6 +62,7 @@ along with GCC; see the file COPYING3. If not see #include "gimple-expr.h" #include "is-a.h" #include "gimple.h" +#include "gimple-iterator.h" #include "gimplify.h" #include "gimple-ssa.h" #include "stringpool.h" @@ -7042,9 +7043,6 @@ alpha_fold_builtin (tree fndecl, int n_args, tree *op, case ALPHA_BUILTIN_MSKQH: return alpha_fold_builtin_mskxx (op, opint, op_const, 0xff, true); - case ALPHA_BUILTIN_UMULH: - return fold_build2 (MULT_HIGHPART_EXPR, alpha_dimode_u, op[0], op[1]); - case ALPHA_BUILTIN_ZAP: opint[1] ^= 0xff; /* FALLTHRU */ @@ -7094,6 +7092,49 @@ alpha_fold_builtin (tree fndecl, int n_args, tree *op, return NULL; } } + +bool +alpha_gimple_fold_builtin (gimple_stmt_iterator *gsi) +{ + bool changed = false; + gimple stmt = gsi_stmt (*gsi); + tree call = gimple_call_fn (stmt); + gimple new_stmt = NULL; + + if (call) + { + tree fndecl = gimple_call_fndecl (stmt); + + if (fndecl) + { + tree arg0, arg1; + + switch (DECL_FUNCTION_CODE (fndecl)) + { + case ALPHA_BUILTIN_UMULH: + arg0 = gimple_call_arg (stmt, 0); + arg1 = gimple_call_arg (stmt, 1); + + new_stmt + = gimple_build_assign_with_ops (MULT_HIGHPART_EXPR, + gimple_call_lhs (stmt), + arg0, + arg1); + break; + default: + break; + } + } + } + + if (new_stmt) + { + gsi_replace (gsi, new_stmt, true); + changed = true; + } + + return changed; +} /* This page contains routines that are used to determine what the function prologue and epilogue code will do and write them out. */ @@ -9790,6 +9831,8 @@ alpha_canonicalize_comparison (int *code, rtx *op0, rtx *op1, #define TARGET_EXPAND_BUILTIN alpha_expand_builtin #undef TARGET_FOLD_BUILTIN #define TARGET_FOLD_BUILTIN alpha_fold_builtin +#undef TARGET_GIMPLE_FOLD_BUILTIN +#define TARGET_GIMPLE_FOLD_BUILTIN alpha_gimple_fold_builtin #undef TARGET_FUNCTION_OK_FOR_SIBCALL #define TARGET_FUNCTION_OK_FOR_SIBCALL alpha_function_ok_for_sibcall |