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| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-04 10:56:22 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-04 10:56:22 +0000 |
| commit | b9be572eda05cd23bbabd6409387d2c7ac782715 (patch) | |
| tree | 5b089e25b51a9c3914b5055c84f8d83414072dab /gcc/common.opt | |
| parent | 2fee2038f99cb244aa1250f8ad42cae7fe2702ec (diff) | |
| download | gcc-b9be572eda05cd23bbabd6409387d2c7ac782715.tar.gz | |
2010-11-04 Richard Guenther <rguenther@suse.de>
Richard Henderson <rth@redhat.com>
* tree.def (FMA_EXPR): New tree code.
* expr.c (expand_expr_real_2): Add FMA_EXPR expansion code.
* gimple.c (gimple_rhs_class_table): FMA_EXPR is a GIMPLE_TERNARY_RHS.
* tree-cfg.c (verify_gimple_assign_ternary): Verify FMA_EXPR types.
* tree-inline.c (estimate_operator_cost): Handle FMA_EXPR.
* gimple-pretty-print.c (dump_ternary_rhs): Likewise.
* tree-ssa-math-opts.c (convert_mult_to_fma): New function.
(execute_optimize_widening_mul): Call it. Reorganize to allow
dead stmt removal. Move TODO flags ...
(pass_optimize_widening_mul): ... here.
* flag-types.h (enum fp_contract_mode): New enum.
* common.opt (flag_fp_contract_mode): New variable.
(-ffp-contract): New option.
* opts.c (common_handle_option): Handle it.
* doc/invoke.texi (-ffp-contract): Document.
* tree.h (fold_fma): Declare.
* builtins.c (fold_fma): New function.
(fold_builtin_fma): Likewise.
(fold_builtin_3): Call it for fma.
* fold-const.c (fold_ternary_loc): Fold FMA_EXPR.
* optabs.c (optab_for_tree_code): Handle FMA_EXPR.
* config/i386/sse.md (fms<mode>4, fnma<mode>, fnms<mode>4):
New expanders.
* doc/md.texi (fms<mode>4, fnma<mode>, fnms<mode>4): Document new
named patterns.
* genopinit.c (optabs): Initialize fms_optab, fnma_optab and fnms_optab.
* optabs.h (enum optab_index): Add OTI_fms, OTI_fnma and OTI_fnms.
(fms_optab, fnma_optab, fnms_optab): New defines.
* gimplify.c (gimplify_expr): Handle binary truth expressions
explicitly. Handle FMA_EXPR.
* tree-vect-stmts.c (vectorizable_operation): Handle ternary
operations.
* gcc.target/i386/fma4-vector-2.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@166304 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/common.opt')
| -rw-r--r-- | gcc/common.opt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/gcc/common.opt b/gcc/common.opt index cd8b0adfff1..551c3358f75 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -58,6 +58,10 @@ bool flag_warn_unused_result = false Variable int *param_values +; Floating-point contraction mode, fast by default. +Variable +enum fp_contract_mode flag_fp_contract_mode = FP_CONTRACT_FAST + ### Driver @@ -857,6 +861,10 @@ fforward-propagate Common Report Var(flag_forward_propagate) Optimization Perform a forward propagation pass on RTL +ffp-contract= +Common Joined RejectNegative +-ffp-contract=[off|on|fast] Perform floating-point expression contraction. + ; Nonzero means don't put addresses of constant functions in registers. ; Used for compiling the Unix kernel, where strange substitutions are ; done on the assembly output. |