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i965/fs: Don't constant-fold RCP

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No shader-db changes on Broadwell

Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Jason Ekstrand 2016-03-16 19:31:02 -07:00
parent 01425c45b3
commit 9881eab197
1 changed files with 0 additions and 15 deletions
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15
src/mesa/drivers/dri/i965/brw_fs_copy_propagation.cpp
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@ -654,21 +654,6 @@ fs_visitor::try_constant_propagate(fs_inst *inst, acp_entry *entry)
}
break;
case SHADER_OPCODE_RCP:
/* The hardware doesn't do math on immediate values
* (because why are you doing that, seriously?), but
* the correct answer is to just constant fold it
* anyway.
*/
assert(i == 0);
if (inst->src[0].f != 0.0f) {
inst->opcode = BRW_OPCODE_MOV;
inst->src[0] = val;
inst->src[0].f = 1.0f / inst->src[0].f;
progress = true;
}
break;
case SHADER_OPCODE_UNTYPED_ATOMIC:
case SHADER_OPCODE_UNTYPED_SURFACE_READ:
case SHADER_OPCODE_UNTYPED_SURFACE_WRITE: