From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Fri, 10 Oct 2008 17:56:03 +0000 (-0600)
Subject: cell: fix bug in emit_FLR() when src reg == dst reg
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e43af05311acd979f43a75f8ba4d9152b453408e;p=mesa.git

cell: fix bug in emit_FLR() when src reg == dst reg
---

diff --git a/src/gallium/drivers/cell/ppu/cell_gen_fp.c b/src/gallium/drivers/cell/ppu/cell_gen_fp.c
index dad74bbad86..7a4e8d20ba2 100644
--- a/src/gallium/drivers/cell/ppu/cell_gen_fp.c
+++ b/src/gallium/drivers/cell/ppu/cell_gen_fp.c
@@ -1092,15 +1092,15 @@ emit_FLR(struct codegen *gen, const struct tgsi_full_instruction *inst)
          int tmp_reg = get_itemp(gen);
 
          /* If negative, subtract 1.0 */
-         spe_fcgt(gen->f, d_reg, zero_reg, s1_reg);
-         spe_selb(gen->f, tmp_reg, zero_reg, get_const_one_reg(gen), d_reg);
-         spe_fs(gen->f, d_reg, s1_reg, tmp_reg);
+         spe_fcgt(gen->f, tmp_reg, zero_reg, s1_reg);
+         spe_selb(gen->f, tmp_reg, zero_reg, get_const_one_reg(gen), tmp_reg);
+         spe_fs(gen->f, tmp_reg, s1_reg, tmp_reg);
 
          /* Convert float to int */
-         spe_cflts(gen->f, d_reg, d_reg, 0);
+         spe_cflts(gen->f, tmp_reg, tmp_reg, 0);
 
          /* Convert int to float */
-         spe_csflt(gen->f, d_reg, d_reg, 0);
+         spe_csflt(gen->f, d_reg, tmp_reg, 0);
 
          store_dest_reg(gen, d_reg, ch, &inst->FullDstRegisters[0]);
          free_itemps(gen);
@@ -1111,8 +1111,7 @@ emit_FLR(struct codegen *gen, const struct tgsi_full_instruction *inst)
 }
 
 /**
- * Emit frac.  
- * Input - FLR(Input)
+ * Compute frac = Input - FLR(Input)
  */
 static boolean
 emit_FRC(struct codegen *gen, const struct tgsi_full_instruction *inst)