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ALU unit critical path optimization

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This commit is contained in:
Blaise Tine
2021-09-07 23:54:10 -07:00
parent c06efbf480
commit aeeb3ca616
6 changed files with 107 additions and 88 deletions
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14
hw/rtl/VX_define.vh
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@@ -14,10 +14,14 @@
`define NB_BITS `LOG2UP(`NUM_BARRIERS)
`define NUM_IREGS 32
`define NRI_BITS `LOG2UP(`NUM_IREGS)
`ifdef EXT_F_ENABLE
`define NUM_REGS 64
`define NUM_REGS (2 * `NUM_IREGS)
`else
`define NUM_REGS 32
`define NUM_REGS `NUM_IREGS
`endif
`define NR_BITS `LOG2UP(`NUM_REGS)
@@ -114,7 +118,6 @@
`define INST_BR_DRET 4'b1110
`define INST_BR_OTHER 4'b1111
`define INST_BR_BITS 4
`define INST_BR_OP(x) x[`INST_BR_BITS-1:0]
`define INST_BR_NEG(x) x[1]
`define INST_BR_LESS(x) x[2]
`define INST_BR_STATIC(x) x[3]
@@ -128,7 +131,6 @@
`define INST_MUL_REM 3'h6
`define INST_MUL_REMU 3'h7
`define INST_MUL_BITS 3
`define INST_MUL_OP(x) x[`INST_MUL_BITS-1:0]
`define INST_MUL_IS_DIV(x) x[2]
`define INST_FMT_B 3'b000
@@ -148,7 +150,6 @@
`define INST_LSU_BITS 4
`define INST_LSU_FMT(x) x[2:0]
`define INST_LSU_WSIZE(x) x[1:0]
`define INST_LSU_OP(x) x[`INST_LSU_BITS-1:0]
`define INST_LSU_IS_FENCE(x) x[0]
`define INST_FENCE_BITS 1
@@ -160,7 +161,6 @@
`define INST_CSR_RC 2'h3
`define INST_CSR_OTHER 2'h0
`define INST_CSR_BITS 2
`define INST_CSR_OP(x) x[`INST_CSR_BITS-1:0]
`define INST_FPU_ADD 4'h0
`define INST_FPU_SUB 4'h4
@@ -179,7 +179,6 @@
`define INST_FPU_NMSUB 4'hB
`define INST_FPU_NMADD 4'hF
`define INST_FPU_BITS 4
`define INST_FPU_OP(x) x[`INST_FPU_BITS-1:0]
`define INST_GPU_TMC 3'h0
`define INST_GPU_WSPAWN 3'h1
@@ -188,7 +187,6 @@
`define INST_GPU_BAR 3'h4
`define INST_GPU_OTHER 3'h7
`define INST_GPU_BITS 3
`define INST_GPU_OP(x) x[`INST_GPU_BITS-1:0]
///////////////////////////////////////////////////////////////////////////////