[Power9][NFC] add setb exploitation test case

[jedilyn]

Summary

Add an original test case for setb before the exploitation actually takes effect, later we can check the difference.

[jsji]

LGTM. I think you can commit such NFC patches directly without review. Thanks.

llvm/trunk/test/CodeGen/PowerPC/ppc64-P9-setb.ll

+; RUN: llc -verify-machineinstrs -mcpu=pwr9 -mtriple=powerpc64le-unknown-unknown \
+; RUN:   -enable-ppc-quad-precision -ppc-asm-full-reg-names < %s | FileCheck %s
+; RUN: llc -verify-machineinstrs -mcpu=pwr8 -mtriple=powerpc64le-unknown-unknown \
+; RUN:   -ppc-asm-full-reg-names < %s | FileCheck %s -check-prefix=CHECK-PWR8    \
+; RUN:   -implicit-check-not "\<setb\>"
+
+; Test different patterns with type i64
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setne)), setlt
+define i64 @setb1(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %a, %b
+  %t2 = icmp ne i64 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb1
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: addic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb1
+; CHECK-PWR8-DAG: xor
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: addic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setne)), setgt
+define i64 @setb2(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %b, %a
+  %t2 = icmp ne i64 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb2
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: addic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb2
+; CHECK-PWR8-DAG: xor
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: addic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setne)), setlt
+define i64 @setb3(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %a, %b
+  %t2 = icmp ne i64 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb3
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: addic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb3
+; CHECK-PWR8-DAG: xor
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: addic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setne)), setgt
+define i64 @setb4(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %b, %a
+  %t2 = icmp ne i64 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb4
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: addic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb4
+; CHECK-PWR8-DAG: xor
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: addic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setgt)), setlt
+define i64 @setb5(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %a, %b
+  %t2 = icmp sgt i64 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb5
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb5
+; CHECK-PWR8-DAG: sradi
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setgt)), setgt
+define i64 @setb6(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %b, %a
+  %t2 = icmp sgt i64 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb6
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb6
+; CHECK-PWR8-DAG: sradi
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setlt)), setlt
+define i64 @setb7(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %a, %b
+  %t2 = icmp slt i64 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb7
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb7
+; CHECK-PWR8-DAG: sradi
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setlt)), setgt
+define i64 @setb8(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %b, %a
+  %t2 = icmp slt i64 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb8
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb8
+; CHECK-PWR8-DAG: sradi
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc lhs, rhs, setne)), setgt
+define i64 @setb9(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %a, %b
+  %t2 = icmp ne i64 %a, %b
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb9
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfic
+; CHECK-DAG: subfe
+; CHECK-DAG: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb9
+; CHECK-PWR8-DAG: xor
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc rhs, lhs, setne)), setlt
+define i64 @setb10(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %b, %a
+  %t2 = icmp ne i64 %a, %b
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb10
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfic
+; CHECK-DAG: subfe
+; CHECK-DAG: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb10
+; CHECK-PWR8-DAG: xor
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc rhs, lhs, setne)), setgt
+define i64 @setb11(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %a, %b
+  %t2 = icmp ne i64 %b, %a
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb11
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfic
+; CHECK-DAG: subfe
+; CHECK-DAG: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb11
+; CHECK-PWR8-DAG: xor
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc lhs, rhs, setne)), setlt
+define i64 @setb12(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %b, %a
+  %t2 = icmp ne i64 %b, %a
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb12
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfic
+; CHECK-DAG: subfe
+; CHECK-DAG: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb12
+; CHECK-PWR8-DAG: xor
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc lhs, rhs, setlt)), setgt
+define i64 @setb13(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %a, %b
+  %t2 = icmp slt i64 %a, %b
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb13
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK-DAG: neg
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb13
+; CHECK-PWR8-DAG: sradi
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8-DAG: neg
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc rhs, lhs, setlt)), setlt
+define i64 @setb14(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %b, %a
+  %t2 = icmp slt i64 %a, %b
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb14
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK-DAG: neg
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb14
+; CHECK-PWR8-DAG: sradi
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8-DAG: neg
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc rhs, lhs, setgt)), setgt
+define i64 @setb15(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %a, %b
+  %t2 = icmp sgt i64 %b, %a
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb15
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK-DAG: neg
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb15
+; CHECK-PWR8-DAG: sradi
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8-DAG: neg
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc lhs, rhs, setgt)), setlt
+define i64 @setb16(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %b, %a
+  %t2 = icmp sgt i64 %b, %a
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb16
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK-DAG: neg
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb16
+; CHECK-PWR8-DAG: sradi
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8-DAG: neg
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc lhs, rhs, 1, -1, setgt), seteq
+define i64 @setb17(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %a, %b
+  %t2 = icmp sgt i64 %a, %b
+  %t3 = select i1 %t2, i64 1, i64 -1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb17
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK: isel
+; CHECK: cmpld
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb17
+; CHECK-PWR8: cmpd
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmpld
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc rhs, lhs, 1, -1, setgt), seteq
+define i64 @setb18(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %b, %a
+  %t2 = icmp sgt i64 %a, %b
+  %t3 = select i1 %t2, i64 1, i64 -1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb18
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK: isel
+; CHECK: cmpld
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb18
+; CHECK-PWR8: cmpd
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmpld
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc rhs, lhs, 1, -1, setlt), seteq
+define i64 @setb19(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %a, %b
+  %t2 = icmp slt i64 %b, %a
+  %t3 = select i1 %t2, i64 1, i64 -1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb19
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK: isel
+; CHECK: cmpld
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb19
+; CHECK-PWR8: cmpd
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmpld
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc lhs, rhs, 1, -1, setlt), seteq
+define i64 @setb20(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %b, %a
+  %t2 = icmp slt i64 %b, %a
+  %t3 = select i1 %t2, i64 1, i64 -1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb20
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK: isel
+; CHECK: cmpld
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb20
+; CHECK-PWR8: cmpd
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmpld
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc lhs, rhs, -1, 1, setlt), seteq
+define i64 @setb21(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %a, %b
+  %t2 = icmp slt i64 %a, %b
+  %t3 = select i1 %t2, i64 -1, i64 1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb21
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK: isel
+; CHECK: cmpld
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb21
+; CHECK-PWR8: cmpd
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmpld
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc rhs, lhs, -1, 1, setlt), seteq
+define i64 @setb22(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %b, %a
+  %t2 = icmp slt i64 %a, %b
+  %t3 = select i1 %t2, i64 -1, i64 1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb22
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: isel
+; CHECK-DAG: cmpld
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb22
+; CHECK-PWR8: cmpd
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmpld
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc rhs, lhs, -1, 1, setgt), seteq
+define i64 @setb23(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %a, %b
+  %t2 = icmp sgt i64 %b, %a
+  %t3 = select i1 %t2, i64 -1, i64 1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb23
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK: isel
+; CHECK: cmpld
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb23
+; CHECK-PWR8: cmpd
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmpld
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc lhs, rhs, -1, 1, setgt), seteq
+define i64 @setb24(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %b, %a
+  %t2 = icmp sgt i64 %b, %a
+  %t3 = select i1 %t2, i64 -1, i64 1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb24
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK: isel
+; CHECK: cmpld
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb24
+; CHECK-PWR8: cmpd
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmpld
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+; end all patterns testing for i64
+
+; Test with swapping the input parameters
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setne)), setlt
+define i64 @setb25(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %b, %a
+  %t2 = icmp ne i64 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb25
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: addic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb25
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: addic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setne)), setgt
+define i64 @setb26(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %a, %b
+  %t2 = icmp ne i64 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setb26
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: addic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb26
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: addic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; Test with different scalar integer type for selected value
+; i32/i16/i8 rather than i64 above
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setne)), setlt
+define i64 @setb27(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %a, %b
+  %t2 = icmp ne i64 %b, %a
+  %t3 = zext i1 %t2 to i32
+  %t4 = select i1 %t1, i32 -1, i32 %t3
+  %t5 = sext i32 %t4 to i64
+  ret i64 %t5
+; CHECK-LABEL: setb27
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: addic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: extsw
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb27
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: addic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: extsw
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setne)), setgt
+define i64 @setb28(i64 %a, i64 %b) {
+  %t1 = icmp sgt i64 %b, %a
+  %t2 = icmp ne i64 %b, %a
+  %t3 = zext i1 %t2 to i16
+  %t4 = select i1 %t1, i16 -1, i16 %t3
+  %t5 = sext i16 %t4 to i64
+  ret i64 %t5
+; CHECK-LABEL: setb28
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: addic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: extsh
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb28
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: addic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: extsh
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setgt)), setlt
+define i64 @setb29(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %a, %b
+  %t2 = icmp sgt i64 %a, %b
+  %t3 = zext i1 %t2 to i8
+  %t4 = select i1 %t1, i8 -1, i8 %t3
+  %t5 = zext i8 %t4 to i64
+  ret i64 %t5
+; CHECK-LABEL: setb29
+; CHECK-DAG: sradi
+; CHECK-DAG: rldicl
+; CHECK-DAG: li
+; CHECK-DAG: cmpd
+; CHECK-DAG: subfc
+; CHECK-DAG: adde
+; CHECK-DAG: xori
+; CHECK-DAG: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setb29
+; CHECK-PWR8-DAG: cmpd
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: adde
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; Testings to cover different comparison opcodes
+; Test with integer type i32/i16/i8 for input parameter
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setne)), setlt
+define i64 @setbsw1(i32 %a, i32 %b) {
+  %t1 = icmp slt i32 %a, %b
+  %t2 = icmp ne i32 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbsw1
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpw
+; CHECK-DAG: cntlzw
+; CHECK-DAG: srwi
+; CHECK-DAG: xori
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbsw1
+; CHECK-PWR8-DAG: cntlzw
+; CHECK-PWR8-DAG: cmpw
+; CHECK-PWR8-DAG: srwi
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setne)), setgt
+define i64 @setbsw2(i32 %a, i32 %b) {
+  %t1 = icmp sgt i32 %b, %a
+  %t2 = icmp ne i32 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbsw2
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpw
+; CHECK-DAG: cntlzw
+; CHECK-DAG: srwi
+; CHECK-DAG: xori
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbsw2
+; CHECK-PWR8-DAG: cntlzw
+; CHECK-PWR8-DAG: cmpw
+; CHECK-PWR8-DAG: srwi
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc rhs, lhs, -1, 1, setgt), seteq
+define i64 @setbsw3(i32 %a, i32 %b) {
+  %t1 = icmp eq i32 %a, %b
+  %t2 = icmp sgt i32 %b, %a
+  %t3 = select i1 %t2, i64 -1, i64 1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbsw3
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: cmpw
+; CHECK: isel
+; CHECK: cmplw
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbsw3
+; CHECK-PWR8: cmpw
+; CHECK-PWR8: isel
+; CHECK-PWR8: cmplw
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setne)), setlt
+define i64 @setbsh1(i16 signext %a, i16 signext %b) {
+  %t1 = icmp slt i16 %a, %b
+  %t2 = icmp ne i16 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbsh1
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpw
+; CHECK-DAG: cntlzw
+; CHECK-DAG: srwi
+; CHECK-DAG: xori
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbsh1
+; CHECK-PWR8-DAG: cntlzw
+; CHECK-PWR8-DAG: cmpw
+; CHECK-PWR8-DAG: srwi
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setne)), setgt
+define i64 @setbsh2(i16 signext %a, i16 signext %b) {
+  %t1 = icmp sgt i16 %b, %a
+  %t2 = icmp ne i16 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbsh2
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmpw
+; CHECK-DAG: cntlzw
+; CHECK-DAG: srwi
+; CHECK-DAG: xori
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbsh2
+; CHECK-PWR8-DAG: cmpw
+; CHECK-PWR8-DAG: cntlzw
+; CHECK-PWR8-DAG: srwi
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setgt)), setlt
+define i64 @setbsc1(i8 %a, i8 %b) {
+  %t1 = icmp slt i8 %a, %b
+  %t2 = icmp sgt i8 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbsc1
+; CHECK-DAG: extsb [[RA:r[0-9]+]], r3
+; CHECK-DAG: extsb [[RB:r[0-9]+]], r4
+; CHECK-DAG: li
+; CHECK-DAG: sub
+; CHECK-DAG: cmpw {{c?r?(0, )?}}[[RA]], [[RB]]
+; CHECK-DAG: rldicl
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbsc1
+; CHECK-PWR8-DAG: extsb
+; CHECK-PWR8-DAG: extsb
+; CHECK-PWR8-DAG: extsw
+; CHECK-PWR8-DAG: extsw
+; CHECK-PWR8-DAG: cmpw
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setgt)), setgt
+define i64 @setbsc2(i8 %a, i8 %b) {
+  %t1 = icmp sgt i8 %b, %a
+  %t2 = icmp sgt i8 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbsc2
+; CHECK-DAG: extsb [[RA:r[0-9]+]], r3
+; CHECK-DAG: extsb [[RB:r[0-9]+]], r4
+; CHECK-DAG: li
+; CHECK-DAG: sub
+; CHECK-DAG: cmpw
+; CHECK-DAG: rldicl
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbsc2
+; CHECK-PWR8-DAG: extsb
+; CHECK-PWR8-DAG: extsb
+; CHECK-PWR8-DAG: extsw
+; CHECK-PWR8-DAG: extsw
+; CHECK-PWR8-DAG: cmpw
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setlt)), setlt
+define i64 @setbsc3(i4 %a, i4 %b) {
+  %t1 = icmp slt i4 %a, %b
+  %t2 = icmp slt i4 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbsc3
+; CHECK-DAG: slwi [[RA:r[0-9]+]], r3, 28
+; CHECK-DAG: slwi [[RB:r[0-9]+]], r4, 28
+; CHECK-DAG: li
+; CHECK-DAG: srawi [[RA1:r[0-9]+]], [[RA]], 28
+; CHECK-DAG: srawi [[RB1:r[0-9]+]], [[RB]], 28
+; CHECK-DAG: sub
+; CHECK-DAG: cmpw
+; CHECK-DAG: rldicl
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbsc3
+; CHECK-PWR8-DAG: slwi
+; CHECK-PWR8-DAG: slwi
+; CHECK-PWR8-DAG: srawi
+; CHECK-PWR8-DAG: srawi
+; CHECK-PWR8-DAG: extsw
+; CHECK-PWR8-DAG: extsw
+; CHECK-PWR8-DAG: cmpw
+; CHECK-PWR8-DAG: rldicl
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; Test with unsigned integer type i64/i32/i16/i8 for input parameter
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setult)), setugt
+define i64 @setbud1(i64 %a, i64 %b) {
+  %t1 = icmp ugt i64 %b, %a
+  %t2 = icmp ult i64 %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbud1
+; CHECK-DAG: li
+; CHECK-DAG: cmpld
+; CHECK-DAG: subfc
+; CHECK-DAG: subfe
+; CHECK-DAG: neg
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbud1
+; CHECK-PWR8-DAG: subfc
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8-DAG: cmpld
+; CHECK-PWR8-DAG: neg
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc lhs, rhs, setne)), setugt
+define i64 @setbud2(i64 %a, i64 %b) {
+  %t1 = icmp ugt i64 %a, %b
+  %t2 = icmp ne i64 %a, %b
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbud2
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK: cmpld
+; CHECK-DAG: subfic
+; CHECK-DAG: subfe
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbud2
+; CHECK-PWR8-DAG: cmpld
+; CHECK-PWR8-DAG: subfic
+; CHECK-PWR8-DAG: subfe
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc lhs, rhs, -1, 1, setugt), seteq
+define i64 @setbud3(i64 %a, i64 %b) {
+  %t1 = icmp eq i64 %b, %a
+  %t2 = icmp ugt i64 %b, %a
+  %t3 = select i1 %t2, i64 -1, i64 1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbud3
+; CHECK-DAG: li
+; CHECK: cmpld
+; CHECK-DAG: li
+; CHECK: isel
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbud3
+; CHECK-PWR8-DAG: cmpld
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8-DAG: li
+; CHECK-PWR8: isel
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc rhs, lhs, setne)), setult
+define i64 @setbuw1(i32 %a, i32 %b) {
+  %t1 = icmp ult i32 %b, %a
+  %t2 = icmp ne i32 %a, %b
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbuw1
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmplw
+; CHECK-DAG: cntlzw
+; CHECK-DAG: srwi
+; CHECK-DAG: xori
+; CHECK-DAG: neg
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbuw1
+; CHECK-PWR8-DAG: cntlzw
+; CHECK-PWR8-DAG: cmplw
+; CHECK-PWR8-DAG: srwi
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8-DAG: neg
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc rhs, lhs, setne)), setugt
+define i64 @setbuw2(i32 %a, i32 %b) {
+  %t1 = icmp ugt i32 %a, %b
+  %t2 = icmp ne i32 %b, %a
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbuw2
+; CHECK-DAG: xor
+; CHECK-DAG: li
+; CHECK-DAG: cmplw
+; CHECK-DAG: cntlzw
+; CHECK-DAG: srwi
+; CHECK-DAG: xori
+; CHECK-DAG: neg
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbuw2
+; CHECK-PWR8-DAG: cntlzw
+; CHECK-PWR8-DAG: cmplw
+; CHECK-PWR8-DAG: srwi
+; CHECK-PWR8-DAG: xori
+; CHECK-PWR8-DAG: neg
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc lhs, rhs, setne)), setult
+define i64 @setbuh(i16 %a, i16 %b) {
+  %t1 = icmp ult i16 %b, %a
+  %t2 = icmp ne i16 %b, %a
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbuh
+; CHECK-DAG: rlwinm [[RA:r[0-9]+]], r3, 0, 16, 31
+; CHECK-DAG: rlwinm [[RB:r[0-9]+]], r4, 0, 16, 31
+; CHECK-DAG: li
+; CHECK-DAG: xor
+; CHECK-DAG: cmplw
+; CHECK-DAG: cntlzw
+; CHECK-DAG: srwi
+; CHECK-DAG: xori
+; CHECK-DAG: neg
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbuh
+; CHECK-PWR8: rlwinm
+; CHECK-PWR8: rlwinm
+; CHECK-PWR8-DAG: cmplw
+; CHECK-PWR8-DAG: cntlzw
+; CHECK-PWR8: srwi
+; CHECK-PWR8: xori
+; CHECK-PWR8: neg
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc lhs, rhs, setult)), setugt
+define i64 @setbuc(i8 %a, i8 %b) {
+  %t1 = icmp ugt i8 %a, %b
+  %t2 = icmp ult i8 %a, %b
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbuc
+; CHECK-DAG: rlwinm [[RA:r[0-9]+]], r3, 0, 24, 31
+; CHECK-DAG: rlwinm [[RB:r[0-9]+]], r4, 0, 24, 31
+; CHECK-DAG: li
+; CHECK-DAG: clrldi
+; CHECK-DAG: clrldi
+; CHECK-DAG: cmplw
+; CHECK-DAG: sub
+; CHECK-DAG: sradi
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbuc
+; CHECK-PWR8: rlwinm
+; CHECK-PWR8: rlwinm
+; CHECK-PWR8-DAG: clrldi
+; CHECK-PWR8-DAG: clrldi
+; CHECK-PWR8-DAG: cmplw
+; CHECK-PWR8: sradi
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; Test with float/double/float128 for input parameter
+
+; select_cc lhs, rhs, -1, (zext (setcc rhs, lhs, setlt)), setlt
+define i64 @setbf1(float %a, float %b) {
+  %t1 = fcmp fast olt float %a, %b
+  %t2 = fcmp fast olt float %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbf1
+; CHECK: fcmpu
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: fcmpu
+; CHECK: isel
+; CHECK: li
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbf1
+; CHECK-PWR8: isel
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, -1, (zext (setcc lhs, rhs, setlt)), setgt
+define i64 @setbf2(float %a, float %b) {
+  %t1 = fcmp fast ogt float %b, %a
+  %t2 = fcmp fast olt float %b, %a
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbf2
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: fcmpu
+; CHECK-DAG: isel
+; CHECK-DAG: li
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbf2
+; CHECK-PWR8: isel
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 0, (select_cc lhs, rhs, -1, 1, setgt), seteq
+define i64 @setbdf1(double %a, double %b) {
+  %t1 = fcmp fast oeq double %b, %a
+  %t2 = fcmp fast ogt double %b, %a
+  %t3 = select i1 %t2, i64 -1, i64 1
+  %t4 = select i1 %t1, i64 0, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbdf1
+; CHECK-DAG: xscmpudp
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK: isel
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbdf1
+; CHECK-PWR8: isel
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; select_cc lhs, rhs, 1, (sext (setcc lhs, rhs, setgt)), setlt
+define i64 @setbdf2(double %a, double %b) {
+  %t1 = fcmp fast olt double %b, %a
+  %t2 = fcmp fast ogt double %b, %a
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbdf2
+; CHECK-DAG: fcmpu
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: xscmpudp
+; CHECK-DAG: isel
+; CHECK-DAG: li
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbdf2
+; CHECK-PWR8: isel
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+define i64 @setbf128(fp128 %a, fp128 %b) {
+  %t1 = fcmp fast ogt fp128 %a, %b
+  %t2 = fcmp fast olt fp128 %a, %b
+  %t3 = sext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbf128
+; CHECK-DAG: li
+; CHECK-DAG: li
+; CHECK-DAG: xscmpuqp
+; CHECK-DAG: isel
+; CHECK-DAG: li
+; CHECK: isel
+; CHECK: blr
+; CHECK-PWR8-LABEL: setbf128
+; CHECK-PWR8: isel
+; CHECK-PWR8: blr
+}
+
+; Some cases we can't leverage setb
+
+define i64 @setbn1(i64 %a, i64 %b) {
+  %t1 = icmp slt i64 %a, %b
+  %t2 = icmp eq i64 %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbn1
+; CHECK-NOT: {{\<setb\>}}
+; CHECK: isel
+; CHECK: blr
+}
+
+define i64 @setbn2(double %a, double %b) {
+  %t1 = fcmp olt double %a, %b
+  %t2 = fcmp one double %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbn2
+; CHECK-NOT: {{\<setb\>}}
+; CHECK: isel
+; CHECK: blr
+}
+
+define i64 @setbn3(float %a, float %b) {
+  %t1 = fcmp ult float %a, %b
+  %t2 = fcmp une float %a, %b
+  %t3 = zext i1 %t2 to i64
+  %t4 = select i1 %t1, i64 -1, i64 %t3
+  ret i64 %t4
+; CHECK-LABEL: setbn3
+; CHECK-NOT: {{\<setb\>}}
+; CHECK: isel
+; CHECK: blr
+}