There are some xtheadvector instructions that differ from RVV1.0
apart from simply adding "th." prefix. For example, RVV1.0
load/store instructions will have SEW while xtheadvector not;
RVV1.0 will have "o" for indexed-ordered store instructions while
xtheadvecotr not; xtheadvector and RVV1.0 have different
vnsrl/vnsra/vfncvt suffix (vv/vx/vi vs wv/wx/wi).
To address this issue without duplicating patterns, we use ASM
targethook to rewrite the whole string of the instructions. We
identify different instructions from the corresponding attribute.
gcc/ChangeLog:
* config/riscv/riscv.cc (riscv_asm_output_opcode):
Co-authored-by: Jin Ma <ji...@linux.alibaba.com>
Co-authored-by: Xianmiao Qu <cooper...@linux.alibaba.com>
Co-authored-by: Christoph Müllner <christoph.muell...@vrull.eu>
---
gcc/config/riscv/riscv.cc | 213 +++++++++++++++++++++++++++++++++++++-
1 file changed, 210 insertions(+), 3 deletions(-)
diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index a80bf8d1a74..13cdfc4ee27 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -5646,9 +5646,216 @@ riscv_asm_output_opcode (FILE *asm_out_file, const char
*p)
{
/* We need to add th. prefix to all the xtheadvector
insturctions here.*/
- if (TARGET_XTHEADVECTOR && current_output_insn != NULL_RTX &&
- p[0] == 'v')
- fputs ("th.", asm_out_file);
+ if (TARGET_XTHEADVECTOR && current_output_insn != NULL_RTX)
+ {
+ if (get_attr_type (current_output_insn) == TYPE_VLDE ||
+ get_attr_type (current_output_insn) == TYPE_VSTE ||
+ get_attr_type (current_output_insn) == TYPE_VLDFF)
+ {
+ if (strstr (p, "e8") || strstr (p, "e16") ||
+ strstr (p, "e32") || strstr (p, "e64"))
+ {
+ get_attr_type (current_output_insn) == TYPE_VSTE
+ ? fputs ("th.vse", asm_out_file)
+ : fputs ("th.vle", asm_out_file);
+ if (strstr (p, "e8"))
+ return p+4;
+ else
+ return p+5;
+ }
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VLDS ||
+ get_attr_type (current_output_insn) == TYPE_VSTS)
+ {
+ if (strstr (p, "vle8") || strstr (p, "vse8") ||
+ strstr (p, "vle16") || strstr (p, "vse16") ||
+ strstr (p, "vle32") || strstr (p, "vse32") ||
+ strstr (p, "vle64") || strstr (p, "vse64"))
+ {
+ get_attr_type (current_output_insn) == TYPE_VSTS
+ ? fputs ("th.vse", asm_out_file)
+ : fputs ("th.vle", asm_out_file);
+ if (strstr (p, "e8"))
+ return p+4;
+ else
+ return p+5;
+ }
+ else if (strstr (p, "vlse8") || strstr (p, "vsse8") ||
+ strstr (p, "vlse16") || strstr (p, "vsse16") ||
+ strstr (p, "vlse32") || strstr (p, "vsse32") ||
+ strstr (p, "vlse64") || strstr (p, "vsse64"))
+ {
+ get_attr_type (current_output_insn) == TYPE_VSTS
+ ? fputs ("th.vsse", asm_out_file)
+ : fputs ("th.vlse", asm_out_file);
+ if (strstr (p, "e8"))
+ return p+5;
+ else
+ return p+6;
+ }
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VLDUX ||
+ get_attr_type (current_output_insn) == TYPE_VLDOX)
+ {
+ if (strstr (p, "ei"))
+ {
+ fputs ("th.vlxe", asm_out_file);
+ if (strstr (p, "ei8"))
+ return p+7;
+ else
+ return p+8;
+ }
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VSTUX ||
+ get_attr_type (current_output_insn) == TYPE_VSTOX)
+ {
+ if (strstr (p, "ei"))
+ {
+ get_attr_type (current_output_insn) == TYPE_VSTUX
+ ? fputs ("th.vsuxe", asm_out_file)
+ : fputs ("th.vsxe", asm_out_file);
+ if (strstr (p, "ei8"))
+ return p+7;
+ else
+ return p+8;
+ }
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VLSEGDE ||
+ get_attr_type (current_output_insn) == TYPE_VSSEGTE ||
+ get_attr_type (current_output_insn) == TYPE_VLSEGDFF)
+ {
+ get_attr_type (current_output_insn) == TYPE_VSSEGTE
+ ? fputs ("th.vsseg", asm_out_file)
+ : fputs ("th.vlseg", asm_out_file);
+ asm_fprintf (asm_out_file, "%c", p[5]);
+ fputs ("e", asm_out_file);
+ if (strstr (p, "e8"))
+ return p+8;
+ else
+ return p+9;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VLSEGDS ||
+ get_attr_type (current_output_insn) == TYPE_VSSEGTS)
+ {
+ get_attr_type (current_output_insn) == TYPE_VSSEGTS
+ ? fputs ("th.vssseg", asm_out_file)
+ : fputs ("th.vlsseg", asm_out_file);
+ asm_fprintf (asm_out_file, "%c", p[6]);
+ fputs ("e", asm_out_file);
+ if (strstr (p, "e8"))
+ return p+9;
+ else
+ return p+10;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VLSEGDUX ||
+ get_attr_type (current_output_insn) == TYPE_VLSEGDOX)
+ {
+ fputs ("th.vlxseg", asm_out_file);
+ asm_fprintf (asm_out_file, "%c", p[7]);
+ fputs ("e", asm_out_file);
+ if (strstr (p, "e8"))
+ return p+10;
+ else
+ return p+11;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VSSEGTUX ||
+ get_attr_type (current_output_insn) == TYPE_VSSEGTOX)
+ {
+ fputs ("th.vsxseg", asm_out_file);
+ asm_fprintf (asm_out_file, "%c", p[7]);
+ fputs ("e", asm_out_file);
+ if (strstr (p, "e8"))
+ return p+10;
+ else
+ return p+11;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VNSHIFT)
+ {
+ if (strstr (p, "vncvt"))
+ {
+ fputs ("th.vncvt.x.x.v", asm_out_file);
+ return p+11;
+ }
+
+ strstr (p, "vnsrl") ? fputs ("th.vnsrl.v", asm_out_file)
+ : fputs ("th.vnsra.v", asm_out_file);
+ return p+7;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VNCLIP)
+ {
+ if (strstr (p, "vnclipu"))
+ {
+ fputs ("th.vnclipu.v", asm_out_file);
+ return p+9;
+ }
+ else
+ {
+ fputs ("th.vnclip.v", asm_out_file);
+ return p+8;
+ }
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VMPOP)
+ {
+ fputs ("th.vmpopc", asm_out_file);
+ return p+5;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VMFFS)
+ {
+ fputs ("th.vmfirst", asm_out_file);
+ return p+6;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VFNCVTFTOI ||
+ get_attr_type (current_output_insn) == TYPE_VFNCVTITOF)
+ {
+ if (strstr (p, "xu"))
+ {
+ get_attr_type (current_output_insn) == TYPE_VFNCVTFTOI
+ ? fputs ("th.vfncvt.xu.f.v", asm_out_file)
+ : fputs ("th.vfncvt.f.xu.v", asm_out_file);
+ return p+13;
+ }
+ else
+ {
+ get_attr_type (current_output_insn) == TYPE_VFNCVTFTOI
+ ? fputs ("th.vfncvt.x.f.v", asm_out_file)
+ : fputs ("th.vfncvt.f.x.v", asm_out_file);
+ return p+12;
+ }
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VFNCVTFTOF)
+ {
+ fputs ("th.vfncvt.f.f.v", asm_out_file);
+ return p+12;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VFREDU)
+ {
+ fputs ("th.vfredsum", asm_out_file);
+ return p+9;
+ }
+
+ if (get_attr_type (current_output_insn) == TYPE_VFWREDU)
+ {
+ fputs ("th.vfwredsum", asm_out_file);
+ return p+10;
+ }
+
+ if (p[0] == 'v')
+ fputs ("th.", asm_out_file);
+ }
return p;
}
--
2.17.1
