R600: Fix inconsistency in rsq instructions.

[oota-llvm.git] / lib / Target / R600 / R600Instructions.td

diff --git a/lib/Target/R600/R600Instructions.td b/lib/Target/R600/R600Instructions.td
index 616b3b533b591014b760c1a2988e5874b41a80bb..73fa345ac0f23863a50035348ec2335d41f3218e 100644 (file)
--- a/lib/Target/R600/R600Instructions.td
+++ b/lib/Target/R600/R600Instructions.td
@@ -1079,18 +1079,21 @@ class RECIP_UINT_Common <bits<11> inst> : R600_1OP_Helper <
   let Itinerary = TransALU;
 }
 
+// Clamped to maximum.
 class RECIPSQRT_CLAMPED_Common <bits<11> inst> : R600_1OP_Helper <
-  inst, "RECIPSQRT_CLAMPED", AMDGPUrsq
+  inst, "RECIPSQRT_CLAMPED", AMDGPUrsq_clamped
 > {
   let Itinerary = TransALU;
 }
 
-class RECIPSQRT_IEEE_Common <bits<11> inst> : R600_1OP <
-  inst, "RECIPSQRT_IEEE", []
+class RECIPSQRT_IEEE_Common <bits<11> inst> : R600_1OP_Helper <
+  inst, "RECIPSQRT_IEEE", AMDGPUrsq_legacy
 > {
   let Itinerary = TransALU;
 }
 
+// TODO: There is also RECIPSQRT_FF which clamps to zero.
+
 class SIN_Common <bits<11> inst> : R600_1OP <
   inst, "SIN", [(set f32:$dst, (SIN_HW f32:$src0))]>{
   let Trig = 1;