From: Nathan Sidwell Date: Wed, 2 Dec 2015 14:57:54 +0000 (+0000) Subject: nvptx-protos.h (nvptx_output_mov_insn): Declare. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f313d112b04b691b736a75f72af49ca6779e9236;p=gcc.git nvptx-protos.h (nvptx_output_mov_insn): Declare. * config/nvptx/nvptx-protos.h (nvptx_output_mov_insn): Declare. (nvptx_underlying_object_mode): Delete. * config/nvptx/nvptx.c (nvptx_underlying_object_mode): Delete. (output_reg): New. (nvptx_declare_function_name): Use output_reg. Remove punning buffer. (nvptx_output_mov_insn): New. (nvptx_print_operand): Separate SUBREG handling, remove 'f' case, Use output_reg. Merge 't' and 'u' handling. * config/nvptx/nvptx.h (NVPTX_PUNNING_BUFFER_REGNUM): Delete. (struct machine_function): Remvoe punning_buffer_size. (REGISTER_NAMES): Remove %punbuffer. * config/nvptx/nvptx.md (UNSPEC_CPLX_LOWPART, UNSPEC_CPLX_HIGHPART): Delete. (*mov_insn [QHSDIM): Remove unnecessary constraints, use nvptx_output_mov_insn. (*mov_insn [SDFM): Reorder constraints to match integer moc. Use nvptx_output_mov_insn. (highpartscsf2, set_highpartscsf2, lowpartscsf2, set_lowpartscsf2): Delete. (mov [SDCM]): Delete. From-SVN: r231180 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 68e4f81fc40..990aab8813c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,27 @@ +2015-12-02 Nathan Sidwell + + * config/nvptx/nvptx-protos.h (nvptx_output_mov_insn): Declare. + (nvptx_underlying_object_mode): Delete. + * config/nvptx/nvptx.c (nvptx_underlying_object_mode): Delete. + (output_reg): New. + (nvptx_declare_function_name): Use output_reg. Remove punning + buffer. + (nvptx_output_mov_insn): New. + (nvptx_print_operand): Separate SUBREG handling, remove 'f' case, + Use output_reg. Merge 't' and 'u' handling. + * config/nvptx/nvptx.h (NVPTX_PUNNING_BUFFER_REGNUM): Delete. + (struct machine_function): Remvoe punning_buffer_size. + (REGISTER_NAMES): Remove %punbuffer. + * config/nvptx/nvptx.md (UNSPEC_CPLX_LOWPART, + UNSPEC_CPLX_HIGHPART): Delete. + (*mov_insn [QHSDIM): Remove unnecessary constraints, use + nvptx_output_mov_insn. + (*mov_insn [SDFM): Reorder constraints to match integer + moc. Use nvptx_output_mov_insn. + (highpartscsf2, set_highpartscsf2, lowpartscsf2, + set_lowpartscsf2): Delete. + (mov [SDCM]): Delete. + 2015-12-02 Richard Biener * tree.h (tree_invariant_p): Declare. diff --git a/gcc/config/nvptx/nvptx-protos.h b/gcc/config/nvptx/nvptx-protos.h index 78b1c98a0f9..de364fa4da7 100644 --- a/gcc/config/nvptx/nvptx-protos.h +++ b/gcc/config/nvptx/nvptx-protos.h @@ -38,9 +38,9 @@ extern void nvptx_expand_oacc_join (unsigned); extern void nvptx_expand_call (rtx, rtx); extern rtx nvptx_expand_compare (rtx); extern const char *nvptx_ptx_type_from_mode (machine_mode, bool); +extern const char *nvptx_output_mov_insn (rtx, rtx); extern const char *nvptx_output_call_insn (rtx_insn *, rtx, rtx); extern const char *nvptx_output_return (void); -extern machine_mode nvptx_underlying_object_mode (rtx); extern const char *nvptx_section_from_addr_space (addr_space_t); extern bool nvptx_hard_regno_mode_ok (int, machine_mode); extern rtx nvptx_maybe_convert_symbolic_operand (rtx); diff --git a/gcc/config/nvptx/nvptx.c b/gcc/config/nvptx/nvptx.c index d3101c035da..17e129c5373 100644 --- a/gcc/config/nvptx/nvptx.c +++ b/gcc/config/nvptx/nvptx.c @@ -155,23 +155,6 @@ nvptx_option_override (void) worker_red_align = GET_MODE_ALIGNMENT (SImode) / BITS_PER_UNIT; } -/* Return the mode to be used when declaring a ptx object for OBJ. - For objects with subparts such as complex modes this is the mode - of the subpart. */ - -machine_mode -nvptx_underlying_object_mode (rtx obj) -{ - if (GET_CODE (obj) == SUBREG) - obj = SUBREG_REG (obj); - machine_mode mode = GET_MODE (obj); - if (mode == TImode) - return DImode; - if (COMPLEX_MODE_P (mode)) - return GET_MODE_INNER (mode); - return mode; -} - /* Return a ptx type for MODE. If PROMOTE, then use .u32 for QImode to deal with ptx ideosyncracies. */ @@ -257,6 +240,37 @@ maybe_split_mode (machine_mode mode) return VOIDmode; } +/* Output a register, subreg, or register pair (with optional + enclosing braces). */ + +static void +output_reg (FILE *file, unsigned regno, machine_mode inner_mode, + int subreg_offset = -1) +{ + if (inner_mode == VOIDmode) + { + if (HARD_REGISTER_NUM_P (regno)) + fprintf (file, "%s", reg_names[regno]); + else + fprintf (file, "%%r%d", regno); + } + else if (subreg_offset >= 0) + { + output_reg (file, regno, VOIDmode); + fprintf (file, "$%d", subreg_offset); + } + else + { + if (subreg_offset == -1) + fprintf (file, "{"); + output_reg (file, regno, inner_mode, GET_MODE_SIZE (inner_mode)); + fprintf (file, ","); + output_reg (file, regno, inner_mode, 0); + if (subreg_offset == -1) + fprintf (file, "}"); + } +} + /* Emit forking instructions for MASK. */ static void @@ -724,16 +738,12 @@ nvptx_declare_function_name (FILE *file, const char *name, const_tree decl) { machine_mode mode = PSEUDO_REGNO_MODE (i); machine_mode split = maybe_split_mode (mode); + if (split != VOIDmode) - { - fprintf (file, "\t.reg%s %%r%d$%d;\n", - nvptx_ptx_type_from_mode (split, true), i, 0); - fprintf (file, "\t.reg%s %%r%d$%d;\n", - nvptx_ptx_type_from_mode (split, true), i, 1); - } - else - fprintf (file, "\t.reg%s %%r%d;\n", - nvptx_ptx_type_from_mode (mode, true), i); + mode = split; + fprintf (file, "\t.reg%s ", nvptx_ptx_type_from_mode (mode, true)); + output_reg (file, i, split, -2); + fprintf (file, ";\n"); } } @@ -754,15 +764,6 @@ nvptx_declare_function_name (FILE *file, const char *name, const_tree decl) BITS_PER_WORD); } - if (cfun->machine->punning_buffer_size > 0) - { - fprintf (file, "\t.reg.u%d %%punbuffer;\n" - "\t.local.align 8 .b8 %%punbuffer_ar[%d];\n", - BITS_PER_WORD, cfun->machine->punning_buffer_size); - fprintf (file, "\tcvta.local.u%d %%punbuffer, %%punbuffer_ar;\n", - BITS_PER_WORD); - } - /* Declare a local variable for the frame. */ sz = get_frame_size (); if (sz > 0 || cfun->machine->has_call_with_sc) @@ -1755,6 +1756,7 @@ nvptx_globalize_label (FILE *, const char *) /* Implement TARGET_ASM_ASSEMBLE_UNDEFINED_DECL. Write an extern declaration only for variable DECL with NAME to FILE. */ + static void nvptx_assemble_undefined_decl (FILE *file, const char *name, const_tree decl) { @@ -1772,6 +1774,37 @@ nvptx_assemble_undefined_decl (FILE *file, const char *name, const_tree decl) fprintf (file, ";\n\n"); } +/* Output a pattern for a move instruction. */ + +const char * +nvptx_output_mov_insn (rtx dst, rtx src) +{ + machine_mode dst_mode = GET_MODE (dst); + machine_mode dst_inner = (GET_CODE (dst) == SUBREG + ? GET_MODE (XEXP (dst, 0)) : dst_mode); + machine_mode src_inner = (GET_CODE (src) == SUBREG + ? GET_MODE (XEXP (src, 0)) : dst_mode); + + if (REG_P (dst) && REGNO (dst) == NVPTX_RETURN_REGNUM && dst_mode == HImode) + /* Special handling for the return register. It's never really an + HI object, and only occurs as the destination of a move + insn. */ + dst_inner = SImode; + + if (src_inner == dst_inner) + return "%.\tmov%t0\t%0, %1;"; + + if (CONSTANT_P (src)) + return (GET_MODE_CLASS (dst_inner) == MODE_INT + && GET_MODE_CLASS (src_inner) != MODE_FLOAT + ? "%.\tmov%t0\t%0, %1;" : "%.\tmov.b%T0\t%0, %1;"); + + if (GET_MODE_SIZE (dst_inner) == GET_MODE_SIZE (src_inner)) + return "%.\tmov.b%T0\t%0, %1;"; + + return "%.\tcvt%t0%t1\t%0, %1;"; +} + /* Output INSN, which is a call to CALLEE with result RESULT. For ptx, this involves writing .param declarations and in/out copies into them. For indirect calls, also write the .callprototype. */ @@ -1921,7 +1954,6 @@ nvptx_print_operand_address (FILE *file, machine_mode mode, rtx addr) A -- print an address space identifier for a MEM c -- print an opcode suffix for a comparison operator, including a type code - f -- print a full reg even for something that must always be split S -- print a shuffle kind specified by CONST_INT t -- print a type opcode suffix, promoting QImode to 32 bits T -- print a type size in bits @@ -1930,9 +1962,6 @@ nvptx_print_operand_address (FILE *file, machine_mode mode, rtx addr) static void nvptx_print_operand (FILE *file, rtx x, int code) { - rtx orig_x = x; - machine_mode op_mode; - if (code == '.') { x = current_insn_predicate; @@ -1954,6 +1983,7 @@ nvptx_print_operand (FILE *file, rtx x, int code) } enum rtx_code x_code = GET_CODE (x); + machine_mode mode = GET_MODE (x); switch (code) { @@ -1975,13 +2005,16 @@ nvptx_print_operand (FILE *file, rtx x, int code) break; case 't': - op_mode = nvptx_underlying_object_mode (x); - fprintf (file, "%s", nvptx_ptx_type_from_mode (op_mode, true)); - break; - case 'u': - op_mode = nvptx_underlying_object_mode (x); - fprintf (file, "%s", nvptx_ptx_type_from_mode (op_mode, false)); + if (x_code == SUBREG) + { + mode = GET_MODE (SUBREG_REG (x)); + if (mode == TImode) + mode = DImode; + else if (COMPLEX_MODE_P (mode)) + mode = GET_MODE_INNER (mode); + } + fprintf (file, "%s", nvptx_ptx_type_from_mode (mode, code == 't')); break; case 'S': @@ -1994,7 +2027,7 @@ nvptx_print_operand (FILE *file, rtx x, int code) break; case 'T': - fprintf (file, "%d", GET_MODE_BITSIZE (GET_MODE (x))); + fprintf (file, "%d", GET_MODE_BITSIZE (mode)); break; case 'j': @@ -2006,14 +2039,14 @@ nvptx_print_operand (FILE *file, rtx x, int code) goto common; case 'c': - op_mode = GET_MODE (XEXP (x, 0)); + mode = GET_MODE (XEXP (x, 0)); switch (x_code) { case EQ: fputs (".eq", file); break; case NE: - if (FLOAT_MODE_P (op_mode)) + if (FLOAT_MODE_P (mode)) fputs (".neu", file); else fputs (".ne", file); @@ -2069,38 +2102,39 @@ nvptx_print_operand (FILE *file, rtx x, int code) default: gcc_unreachable (); } - if (FLOAT_MODE_P (op_mode) + if (FLOAT_MODE_P (mode) || x_code == EQ || x_code == NE || x_code == GEU || x_code == GTU || x_code == LEU || x_code == LTU) - fputs (nvptx_ptx_type_from_mode (op_mode, true), file); + fputs (nvptx_ptx_type_from_mode (mode, true), file); else - fprintf (file, ".s%d", GET_MODE_BITSIZE (op_mode)); + fprintf (file, ".s%d", GET_MODE_BITSIZE (mode)); break; default: common: switch (x_code) { case SUBREG: - x = SUBREG_REG (x); - /* fall through */ + { + rtx inner_x = SUBREG_REG (x); + machine_mode inner_mode = GET_MODE (inner_x); + machine_mode split = maybe_split_mode (inner_mode); + + if (split != VOIDmode + && (GET_MODE_SIZE (inner_mode) == GET_MODE_SIZE (mode))) + output_reg (file, REGNO (inner_x), split); + else + output_reg (file, REGNO (inner_x), split, SUBREG_BYTE (x)); + } + break; case REG: - if (HARD_REGISTER_P (x)) - fprintf (file, "%s", reg_names[REGNO (x)]); - else - fprintf (file, "%%r%d", REGNO (x)); - if (code != 'f' && maybe_split_mode (GET_MODE (x)) != VOIDmode) - { - gcc_assert (GET_CODE (orig_x) == SUBREG - && maybe_split_mode (GET_MODE (orig_x)) == VOIDmode); - fprintf (file, "$%d", SUBREG_BYTE (orig_x) / UNITS_PER_WORD); - } + output_reg (file, REGNO (x), maybe_split_mode (mode)); break; case MEM: fputc ('[', file); - nvptx_print_address_operand (file, XEXP (x, 0), GET_MODE (x)); + nvptx_print_address_operand (file, XEXP (x, 0), mode); fputc (']', file); break; @@ -2119,10 +2153,10 @@ nvptx_print_operand (FILE *file, rtx x, int code) case CONST_DOUBLE: long vals[2]; - real_to_target (vals, CONST_DOUBLE_REAL_VALUE (x), GET_MODE (x)); + real_to_target (vals, CONST_DOUBLE_REAL_VALUE (x), mode); vals[0] &= 0xffffffff; vals[1] &= 0xffffffff; - if (GET_MODE (x) == SFmode) + if (mode == SFmode) fprintf (file, "0f%08lx", vals[0]); else fprintf (file, "0d%08lx%08lx", vals[1], vals[0]); diff --git a/gcc/config/nvptx/nvptx.h b/gcc/config/nvptx/nvptx.h index cc5822bb107..a6e74eaabb8 100644 --- a/gcc/config/nvptx/nvptx.h +++ b/gcc/config/nvptx/nvptx.h @@ -156,7 +156,6 @@ enum reg_class #define STACK_POINTER_REGNUM 1 #define HARD_FRAME_POINTER_REGNUM 2 -#define NVPTX_PUNNING_BUFFER_REGNUM 3 #define NVPTX_RETURN_REGNUM 4 #define FRAME_POINTER_REGNUM 15 #define ARG_POINTER_REGNUM 14 @@ -231,7 +230,6 @@ struct GTY(()) machine_function bool has_call_with_sc; HOST_WIDE_INT outgoing_stdarg_size; int ret_reg_mode; /* machine_mode not defined yet. */ - int punning_buffer_size; rtx axis_predicate[2]; }; #endif @@ -264,7 +262,7 @@ struct GTY(()) machine_function #define REGISTER_NAMES \ { \ - "%hr0", "%outargs", "%hfp", "%punbuffer", "%retval", "%retval_in", "%hr6", "%hr7", \ + "%hr0", "%outargs", "%hfp", "%hr3", "%retval", "%retval_in", "%hr6", "%hr7", \ "%hr8", "%hr9", "%hr10", "%hr11", "%hr12", "%hr13", "%argp", "%frame" \ } diff --git a/gcc/config/nvptx/nvptx.md b/gcc/config/nvptx/nvptx.md index fd015631203..913afc11139 100644 --- a/gcc/config/nvptx/nvptx.md +++ b/gcc/config/nvptx/nvptx.md @@ -31,9 +31,6 @@ UNSPEC_TO_SHARED UNSPEC_TO_CONST - UNSPEC_CPLX_LOWPART - UNSPEC_CPLX_HIGHPART - UNSPEC_COPYSIGN UNSPEC_LOG2 UNSPEC_EXP2 @@ -258,74 +255,31 @@ %.\\tsetp.eq.u32\\t%0, 1, 1;") (define_insn "*mov_insn" - [(set (match_operand:QHSDIM 0 "nvptx_nonimmediate_operand" "=R,R,R,m") - (match_operand:QHSDIM 1 "general_operand" "n,Ri,m,R"))] - "!(MEM_P (operands[0]) - && (!REG_P (operands[1]) || REGNO (operands[1]) <= LAST_VIRTUAL_REGISTER))" + [(set (match_operand:QHSDIM 0 "nvptx_nonimmediate_operand" "=R,R,m") + (match_operand:QHSDIM 1 "general_operand" "Ri,m,R"))] + "!MEM_P (operands[0]) + || (REG_P (operands[1]) && REGNO (operands[1]) > LAST_VIRTUAL_REGISTER)" { - if (which_alternative == 2) + if (which_alternative == 1) return "%.\\tld%A1%u1\\t%0, %1;"; - if (which_alternative == 3) + if (which_alternative == 2) return "%.\\tst%A0%u0\\t%0, %1;"; - rtx dst = operands[0]; - rtx src = operands[1]; - - enum machine_mode dst_mode = nvptx_underlying_object_mode (dst); - enum machine_mode src_mode = nvptx_underlying_object_mode (src); - if (GET_CODE (dst) == SUBREG) - dst = SUBREG_REG (dst); - if (GET_CODE (src) == SUBREG) - src = SUBREG_REG (src); - if (src_mode == QImode) - src_mode = SImode; - if (dst_mode == QImode) - dst_mode = SImode; - if (CONSTANT_P (src)) - { - if (GET_MODE_CLASS (dst_mode) != MODE_INT) - return "%.\\tmov.b%T0\\t%0, %1;"; - else - return "%.\\tmov%t0\\t%0, %1;"; - } - - /* Special handling for the return register; we allow this register to - only occur in the destination of a move insn. */ - if (REG_P (dst) && REGNO (dst) == NVPTX_RETURN_REGNUM - && dst_mode == HImode) - dst_mode = SImode; - if (dst_mode == src_mode) - return "%.\\tmov%t0\\t%0, %1;"; - /* Mode-punning between floating point and integer. */ - if (GET_MODE_SIZE (dst_mode) == GET_MODE_SIZE (src_mode)) - return "%.\\tmov.b%T0\\t%0, %1;"; - return "%.\\tcvt%t0%t1\\t%0, %1;"; + return nvptx_output_mov_insn (operands[0], operands[1]); } [(set_attr "subregs_ok" "true")]) (define_insn "*mov_insn" [(set (match_operand:SDFM 0 "nvptx_nonimmediate_operand" "=R,R,m") (match_operand:SDFM 1 "general_operand" "RF,m,R"))] - "!(MEM_P (operands[0]) && !REG_P (operands[1]))" + "!MEM_P (operands[0]) || REG_P (operands[1])" { if (which_alternative == 1) return "%.\\tld%A1%u0\\t%0, %1;"; if (which_alternative == 2) return "%.\\tst%A0%u1\\t%0, %1;"; - rtx dst = operands[0]; - rtx src = operands[1]; - if (GET_CODE (dst) == SUBREG) - dst = SUBREG_REG (dst); - if (GET_CODE (src) == SUBREG) - src = SUBREG_REG (src); - enum machine_mode dst_mode = GET_MODE (dst); - enum machine_mode src_mode = GET_MODE (src); - if (dst_mode == src_mode) - return "%.\\tmov%t0\\t%0, %1;"; - if (GET_MODE_SIZE (dst_mode) == GET_MODE_SIZE (src_mode)) - return "%.\\tmov.b%T0\\t%0, %1;"; - gcc_unreachable (); + return nvptx_output_mov_insn (operands[0], operands[1]); } [(set_attr "subregs_ok" "true")]) @@ -373,116 +327,6 @@ } }) -(define_insn "highpartscsf2" - [(set (match_operand:SF 0 "nvptx_register_operand" "=R") - (unspec:SF [(match_operand:SC 1 "nvptx_register_operand")] - UNSPEC_CPLX_HIGHPART))] - "" - "%.\\tmov%t0\\t%0, %f1$1;") - -(define_insn "set_highpartsfsc2" - [(set (match_operand:SC 0 "nvptx_register_operand" "+R") - (unspec:SC [(match_dup 0) - (match_operand:SF 1 "nvptx_register_operand")] - UNSPEC_CPLX_HIGHPART))] - "" - "%.\\tmov%t1\\t%f0$1, %1;") - -(define_insn "lowpartscsf2" - [(set (match_operand:SF 0 "nvptx_register_operand" "=R") - (unspec:SF [(match_operand:SC 1 "nvptx_register_operand")] - UNSPEC_CPLX_LOWPART))] - "" - "%.\\tmov%t0\\t%0, %f1$0;") - -(define_insn "set_lowpartsfsc2" - [(set (match_operand:SC 0 "nvptx_register_operand" "+R") - (unspec:SC [(match_dup 0) - (match_operand:SF 1 "nvptx_register_operand")] - UNSPEC_CPLX_LOWPART))] - "" - "%.\\tmov%t1\\t%f0$0, %1;") - -(define_expand "mov" - [(set (match_operand:SDCM 0 "nvptx_nonimmediate_operand" "") - (match_operand:SDCM 1 "general_operand" ""))] - "" -{ - enum machine_mode submode = mode == SCmode ? SFmode : DFmode; - int sz = GET_MODE_SIZE (submode); - rtx xops[4]; - rtx punning_reg = NULL_RTX; - rtx copyback = NULL_RTX; - - if (GET_CODE (operands[0]) == SUBREG) - { - rtx inner = SUBREG_REG (operands[0]); - enum machine_mode inner_mode = GET_MODE (inner); - int sz2 = GET_MODE_SIZE (inner_mode); - gcc_assert (sz2 >= sz); - cfun->machine->punning_buffer_size - = MAX (cfun->machine->punning_buffer_size, sz2); - if (punning_reg == NULL_RTX) - punning_reg = gen_rtx_REG (Pmode, NVPTX_PUNNING_BUFFER_REGNUM); - copyback = gen_move_insn (inner, gen_rtx_MEM (inner_mode, punning_reg)); - operands[0] = gen_rtx_MEM (mode, punning_reg); - } - if (GET_CODE (operands[1]) == SUBREG) - { - rtx inner = SUBREG_REG (operands[1]); - enum machine_mode inner_mode = GET_MODE (inner); - int sz2 = GET_MODE_SIZE (inner_mode); - gcc_assert (sz2 >= sz); - cfun->machine->punning_buffer_size - = MAX (cfun->machine->punning_buffer_size, sz2); - if (punning_reg == NULL_RTX) - punning_reg = gen_rtx_REG (Pmode, NVPTX_PUNNING_BUFFER_REGNUM); - emit_move_insn (gen_rtx_MEM (inner_mode, punning_reg), inner); - operands[1] = gen_rtx_MEM (mode, punning_reg); - } - - if (REG_P (operands[0]) && submode == SFmode) - { - xops[0] = gen_reg_rtx (submode); - xops[1] = gen_reg_rtx (submode); - } - else - { - xops[0] = gen_lowpart (submode, operands[0]); - if (MEM_P (operands[0])) - xops[1] = adjust_address_nv (operands[0], submode, sz); - else - xops[1] = gen_highpart (submode, operands[0]); - } - - if (REG_P (operands[1]) && submode == SFmode) - { - xops[2] = gen_reg_rtx (submode); - xops[3] = gen_reg_rtx (submode); - emit_insn (gen_lowpartscsf2 (xops[2], operands[1])); - emit_insn (gen_highpartscsf2 (xops[3], operands[1])); - } - else - { - xops[2] = gen_lowpart (submode, operands[1]); - if (MEM_P (operands[1])) - xops[3] = adjust_address_nv (operands[1], submode, sz); - else - xops[3] = gen_highpart (submode, operands[1]); - } - - emit_move_insn (xops[0], xops[2]); - emit_move_insn (xops[1], xops[3]); - if (REG_P (operands[0]) && submode == SFmode) - { - emit_insn (gen_set_lowpartsfsc2 (operands[0], xops[0])); - emit_insn (gen_set_highpartsfsc2 (operands[0], xops[1])); - } - if (copyback) - emit_insn (copyback); - DONE; -}) - (define_insn "zero_extendqihi2" [(set (match_operand:HI 0 "nvptx_register_operand" "=R,R") (zero_extend:HI (match_operand:QI 1 "nvptx_reg_or_mem_operand" "R,m")))]