R600/SI: Make more unordered comparisons legal

This saves a second compare and an and / or by using
the unordered comparison instructions.

llvm-svn: 224066
diff --git a/llvm/test/CodeGen/R600/fcmp64.ll b/llvm/test/CodeGen/R600/fcmp64.ll
index dc24443..73cee66 100644
--- a/llvm/test/CodeGen/R600/fcmp64.ll
+++ b/llvm/test/CodeGen/R600/fcmp64.ll
@@ -1,7 +1,7 @@
 ; RUN: llc < %s -march=r600 -mcpu=tahiti -verify-machineinstrs | FileCheck %s
 
 ; CHECK-LABEL: {{^}}flt_f64:
-; CHECK: v_cmp_lt_f64_e64 {{s[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+]}}
+; CHECK: v_cmp_nge_f64_e32 vcc, {{v[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+]}}
 define void @flt_f64(i32 addrspace(1)* %out, double addrspace(1)* %in1,
                      double addrspace(1)* %in2) {
    %r0 = load double addrspace(1)* %in1
@@ -13,7 +13,7 @@
 }
 
 ; CHECK-LABEL: {{^}}fle_f64:
-; CHECK: v_cmp_le_f64_e64 {{s[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+]}}
+; CHECK: v_cmp_ngt_f64_e32 vcc, {{v[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+]}}
 define void @fle_f64(i32 addrspace(1)* %out, double addrspace(1)* %in1,
                      double addrspace(1)* %in2) {
    %r0 = load double addrspace(1)* %in1
@@ -25,7 +25,7 @@
 }
 
 ; CHECK-LABEL: {{^}}fgt_f64:
-; CHECK: v_cmp_gt_f64_e64 {{s[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+]}}
+; CHECK: v_cmp_nle_f64_e32 vcc, {{v[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+]}}
 define void @fgt_f64(i32 addrspace(1)* %out, double addrspace(1)* %in1,
                      double addrspace(1)* %in2) {
    %r0 = load double addrspace(1)* %in1
@@ -37,7 +37,7 @@
 }
 
 ; CHECK-LABEL: {{^}}fge_f64:
-; CHECK: v_cmp_ge_f64_e64 {{s[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+]}}
+; CHECK: v_cmp_nlt_f64_e32 vcc, {{v[[0-9]+:[0-9]+], v[[0-9]+:[0-9]+]}}
 define void @fge_f64(i32 addrspace(1)* %out, double addrspace(1)* %in1,
                      double addrspace(1)* %in2) {
    %r0 = load double addrspace(1)* %in1