nv50: add abs-modifier for emit_minmax

diff --git a/src/gallium/drivers/nv50/nv50_program.c b/src/gallium/drivers/nv50/nv50_program.c
index 27827c7ecf1d107eb29761e446202d201f7929dd..64a0b571a58be01d9ff5ae2b5d57176f5b84e4c9 100644 (file)
--- a/src/gallium/drivers/nv50/nv50_program.c
+++ b/src/gallium/drivers/nv50/nv50_program.c
@@ -88,12 +88,16 @@ struct nv50_reg {
        int index;
 
        int hw;
-       int neg;
+       int mod;
 
        int rhw; /* result hw for FP outputs, or interpolant index */
        int acc; /* instruction where this reg is last read (first insn == 1) */
 };
 
+#define NV50_MOD_NEG 1
+#define NV50_MOD_ABS 2
+#define NV50_MOD_SAT 4
+
 /* arbitrary limits */
 #define MAX_IF_DEPTH 4
 #define MAX_LOOP_DEPTH 4
@@ -152,7 +156,7 @@ ctor_reg(struct nv50_reg *reg, unsigned type, int index, int hw)
        reg->type = type;
        reg->index = index;
        reg->hw = hw;
-       reg->neg = 0;
+       reg->mod = 0;
        reg->rhw = -1;
        reg->acc = 0;
 }
@@ -460,8 +464,12 @@ set_dst(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_program_exec *e)
 static INLINE void
 set_immd(struct nv50_pc *pc, struct nv50_reg *imm, struct nv50_program_exec *e)
 {
+       unsigned val;
        float f = pc->immd_buf[imm->hw];
-       unsigned val = fui(imm->neg ? -f : f);
+
+       if (imm->mod & NV50_MOD_ABS)
+               f = fabsf(f);
+       val = fui((imm->mod & NV50_MOD_NEG) ? -f : f);
 
        set_long(pc, e);
        /*XXX: can't be predicated - bits overlap.. catch cases where both
@@ -801,12 +809,12 @@ emit_mul(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src0,
        set_dst(pc, dst, e);
        set_src_0(pc, src0, e);
        if (src1->type == P_IMMD && !is_long(e)) {
-               if (src0->neg)
+               if (src0->mod & NV50_MOD_NEG)
                        e->inst[0] |= 0x00008000;
                set_immd(pc, src1, e);
        } else {
                set_src_1(pc, src1, e);
-               if (src0->neg ^ src1->neg) {
+               if ((src0->mod ^ src1->mod) & NV50_MOD_NEG) {
                        if (is_long(e))
                                e->inst[1] |= 0x08000000;
                        else
@@ -828,9 +836,10 @@ emit_add(struct nv50_pc *pc, struct nv50_reg *dst,
        alloc_reg(pc, src1);
        check_swap_src_0_1(pc, &src0, &src1);
 
-       if (!pc->allow32 || (src0->neg | src1->neg) || src1->hw > 63) {
+       if (!pc->allow32 || (src0->mod | src1->mod) || src1->hw > 63) {
                set_long(pc, e);
-               e->inst[1] |= (src0->neg << 26) | (src1->neg << 27);
+               e->inst[1] |= ((src0->mod & NV50_MOD_NEG) << 26) |
+                             ((src1->mod & NV50_MOD_NEG) << 27);
        }
 
        set_dst(pc, dst, e);
@@ -877,6 +886,11 @@ emit_minmax(struct nv50_pc *pc, unsigned sub, struct nv50_reg *dst,
        set_src_0(pc, src0, e);
        set_src_1(pc, src1, e);
 
+       if (src0->mod & NV50_MOD_ABS)
+               e->inst[1] |= 0x00100000;
+       if (src1->mod & NV50_MOD_ABS)
+               e->inst[1] |= 0x00080000;
+
        emit(pc, e);
 }
 
@@ -885,9 +899,9 @@ emit_sub(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src0,
         struct nv50_reg *src1)
 {
        assert(src0 != src1);
-       src1->neg ^= 1;
+       src1->mod ^= NV50_MOD_NEG;
        emit_add(pc, dst, src0, src1);
-       src1->neg ^= 1;
+       src1->mod ^= NV50_MOD_NEG;
 }
 
 static void
@@ -941,9 +955,9 @@ emit_mad(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src0,
        set_src_1(pc, src1, e);
        set_src_2(pc, src2, e);
 
-       if (src0->neg ^ src1->neg)
+       if ((src0->mod ^ src1->mod) & NV50_MOD_NEG)
                e->inst[1] |= 0x04000000;
-       if (src2->neg)
+       if (src2->mod & NV50_MOD_NEG)
                e->inst[1] |= 0x08000000;
 
        emit(pc, e);
@@ -954,9 +968,9 @@ emit_msb(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src0,
         struct nv50_reg *src1, struct nv50_reg *src2)
 {
        assert(src2 != src0 && src2 != src1);
-       src2->neg ^= 1;
+       src2->mod ^= NV50_MOD_NEG;
        emit_mad(pc, dst, src0, src1, src2);
-       src2->neg ^= 1;
+       src2->mod ^= NV50_MOD_NEG;
 }
 
 static void
@@ -1230,7 +1244,7 @@ emit_kil(struct nv50_pc *pc, struct nv50_reg *src)
        const int r_pred = 1;
        unsigned cvn = CVT_F32_F32;
 
-       if (src->neg)
+       if (src->mod & NV50_MOD_NEG)
                cvn |= CVT_NEG;
        /* write predicate reg */
        emit_cvt(pc, NULL, src, r_pred, CVTOP_RN, cvn);
@@ -1408,7 +1422,7 @@ emit_ddy(struct nv50_pc *pc, struct nv50_reg *dst, struct nv50_reg *src)
 
        assert(src->type == P_TEMP);
 
-       if (!src->neg) /* ! double negation */
+       if (!(src->mod & NV50_MOD_NEG)) /* ! double negation */
                emit_neg(pc, src, src);
 
        e->inst[0] = 0xc0150000;
@@ -1671,7 +1685,7 @@ tgsi_src(struct nv50_pc *pc, int chan, const struct tgsi_full_src_register *src,
                break;
        case TGSI_UTIL_SIGN_TOGGLE:
                if (neg)
-                       r->neg = 1;
+                       r->mod = NV50_MOD_NEG;
                else {
                        temp = temp_temp(pc);
                        emit_neg(pc, temp, r);
@@ -2207,7 +2221,7 @@ nv50_program_tx_insn(struct nv50_pc *pc,
                for (c = 0; c < 4; c++) {
                        if (!src[i][c])
                                continue;
-                       src[i][c]->neg = 0;
+                       src[i][c]->mod = 0;
                        if (src[i][c]->index == -1 && src[i][c]->type == P_IMMD)
                                FREE(src[i][c]);
                        else