diff options
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/nvptx/nvptx.cc | 42 | ||||
| -rw-r--r-- | gcc/config/nvptx/nvptx.opt | 3 |
2 files changed, 45 insertions, 0 deletions
diff --git a/gcc/config/nvptx/nvptx.cc b/gcc/config/nvptx/nvptx.cc index a37a6c7..981b91f 100644 --- a/gcc/config/nvptx/nvptx.cc +++ b/gcc/config/nvptx/nvptx.cc @@ -5372,6 +5372,17 @@ workaround_barsyncs (void) } #endif +static rtx +gen_comment (const char *s) +{ + const char *sep = " "; + size_t len = strlen (ASM_COMMENT_START) + strlen (sep) + strlen (s) + 1; + char *comment = (char *) alloca (len); + snprintf (comment, len, "%s%s%s", ASM_COMMENT_START, sep, s); + return gen_rtx_ASM_INPUT_loc (VOIDmode, ggc_strdup (comment), + cfun->function_start_locus); +} + /* Initialize all declared regs at function entry. Advantage : Fool-proof. Disadvantage: Potentially creates a lot of long live ranges and adds a lot @@ -5394,6 +5405,8 @@ workaround_uninit_method_1 (void) gcc_assert (CONST0_RTX (GET_MODE (reg))); start_sequence (); + if (nvptx_comment && first != NULL) + emit_insn (gen_comment ("Start: Added by -minit-regs=1")); emit_move_insn (reg, CONST0_RTX (GET_MODE (reg))); rtx_insn *inits = get_insns (); end_sequence (); @@ -5411,6 +5424,9 @@ workaround_uninit_method_1 (void) else insert_here = emit_insn_after (inits, insert_here); } + + if (nvptx_comment && insert_here != NULL) + emit_insn_after (gen_comment ("End: Added by -minit-regs=1"), insert_here); } /* Find uses of regs that are not defined on all incoming paths, and insert a @@ -5446,6 +5462,8 @@ workaround_uninit_method_2 (void) gcc_assert (CONST0_RTX (GET_MODE (reg))); start_sequence (); + if (nvptx_comment && first != NULL) + emit_insn (gen_comment ("Start: Added by -minit-regs=2:")); emit_move_insn (reg, CONST0_RTX (GET_MODE (reg))); rtx_insn *inits = get_insns (); end_sequence (); @@ -5463,6 +5481,9 @@ workaround_uninit_method_2 (void) else insert_here = emit_insn_after (inits, insert_here); } + + if (nvptx_comment && insert_here != NULL) + emit_insn_after (gen_comment ("End: Added by -minit-regs=2"), insert_here); } /* Find uses of regs that are not defined on all incoming paths, and insert a @@ -5531,6 +5552,27 @@ workaround_uninit_method_3 (void) } } + if (nvptx_comment) + FOR_EACH_BB_FN (bb, cfun) + { + if (single_pred_p (bb)) + continue; + + edge e; + edge_iterator ei; + FOR_EACH_EDGE (e, ei, bb->preds) + { + if (e->insns.r == NULL_RTX) + continue; + start_sequence (); + emit_insn (gen_comment ("Start: Added by -minit-regs=3:")); + emit_insn (e->insns.r); + emit_insn (gen_comment ("End: Added by -minit-regs=3:")); + e->insns.r = get_insns (); + end_sequence (); + } + } + commit_edge_insertions (); } diff --git a/gcc/config/nvptx/nvptx.opt b/gcc/config/nvptx/nvptx.opt index 0858007..e56ec92 100644 --- a/gcc/config/nvptx/nvptx.opt +++ b/gcc/config/nvptx/nvptx.opt @@ -95,3 +95,6 @@ Specify the version of the ptx version to use. minit-regs= Target Var(nvptx_init_regs) IntegerRange(0, 3) Joined UInteger Init(3) Initialize ptx registers. + +mptx-comment +Target Var(nvptx_comment) Init(1) Undocumented |