From: Jonathan White <jwhite@tungstengraphics.com>
Date: Thu, 18 Sep 2008 16:36:09 +0000 (-0600)
Subject: cell: Added SGE and SLE instructions
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c868a1c32d70295f425333f9e8a35235b129704b;p=mesa.git

cell: Added SGE and SLE instructions
---

diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c
index 77386b30250..92681408e9f 100644
--- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c
+++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c
@@ -696,6 +696,68 @@ emit_SLT(struct codegen *gen, const struct tgsi_full_instruction *inst)
    return true;
 }
 
+/**
+ * Emit set-if_greater-then-or-equal.  See emit_SGT for comments.
+ */
+static boolean
+emit_SGE(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+   int ch;
+
+   spe_comment(gen->f, -4, "SGE:");
+
+   for (ch = 0; ch < 4; ch++) {
+      if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+         int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+         int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+         int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+         /* d = (s1 >= s2) */
+         spe_fcgt(gen->f, d_reg, s2_reg, s1_reg);
+
+         /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+         /* d = d & ~one_reg */
+         spe_andc(gen->f, d_reg, d_reg, get_const_one_reg(gen));
+
+         store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+         free_itemps(gen);
+      }
+   }
+
+   return true;
+}
+
+/**
+ * Emit set-if_less-then-or-equal.  See emit_SGT for comments.
+ */
+static boolean
+emit_SLE(struct codegen *gen, const struct tgsi_full_instruction *inst)
+{
+   int ch;
+
+   spe_comment(gen->f, -4, "SLE:");
+
+   for (ch = 0; ch < 4; ch++) {
+      if (inst->FullDstRegisters[0].DstRegister.WriteMask & (1 << ch)) {
+         int s1_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[0]);
+         int s2_reg = get_src_reg(gen, ch, &inst->FullSrcRegisters[1]);
+         int d_reg = get_dst_reg(gen, ch, &inst->FullDstRegisters[0]);
+
+         /* d = (s1 <= s2) */
+         spe_fcgt(gen->f, d_reg, s1_reg, s2_reg);
+
+         /* convert d from 0x0/0xffffffff to 0.0/1.0 */
+         /* d = d & ~one_reg */
+         spe_andc(gen->f, d_reg, d_reg, get_const_one_reg(gen));
+
+         store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
+         free_itemps(gen);
+      }
+   }
+
+   return true;
+}
+
 /**
  * Emit set-if_equal.  See emit_SGT for comments.
  */