[Power9] Add __float128 builtins for Round To Odd

[stefanp]

Summary

Add a number of builtins for __float128 Round To Odd.
This is the Clang portion of the builtins work.

[stefanp]

Updated the test case to use clang cc1 instead of just clang.

[nemanjai]

LGTM.

include/clang/Basic/BuiltinsPPC.def

 BUILTIN(__builtin_vsx_xvtstdcsp, "V4UiV4fIi", "")
 
 BUILTIN(__builtin_vsx_insertword, "V16UcV4UiV16UcIi", "")
 BUILTIN(__builtin_vsx_extractuword, "V2ULLiV16UcIi", "")
 
 BUILTIN(__builtin_vsx_xxpermdi, "v.", "t")
 BUILTIN(__builtin_vsx_xxsldwi, "v.", "t")
 
+// Float 128 built-ins
+BUILTIN(__builtin_sqrtf128_round_to_odd, "LLdLLd", "")
+BUILTIN(__builtin_addf128_round_to_odd, "LLdLLdLLd", "")
+BUILTIN(__builtin_subf128_round_to_odd, "LLdLLdLLd", "")
+BUILTIN(__builtin_mulf128_round_to_odd, "LLdLLdLLd", "")
+BUILTIN(__builtin_divf128_round_to_odd, "LLdLLdLLd", "")
+BUILTIN(__builtin_fmaf128_round_to_odd, "LLdLLdLLdLLd", "")
+
 // HTM builtins
 BUILTIN(__builtin_tbegin, "UiUIi", "")
 BUILTIN(__builtin_tend, "UiUIi", "")
 
 BUILTIN(__builtin_tabort, "UiUi", "")
 BUILTIN(__builtin_tabortdc, "UiUiUiUi", "")
 BUILTIN(__builtin_tabortdci, "UiUiUii", "")
 BUILTIN(__builtin_tabortwc, "UiUiUiUi", "")

test/CodeGen/builtins-ppc-p9-f128.c

+// RUN: %clang -mcpu=pwr9 -mfloat128 -emit-llvm -S %s \
+// RUN:   -o - | FileCheck %s
+
+__float128 A;
+__float128 B;
+__float128 C;
+
+
+__float128 testSqrtOdd() {
+  return __builtin_sqrtf128_round_to_odd(A);
+// CHECK: @llvm.ppc.sqrtf128.round.to.odd(fp128
+// CHECK-NEXT: ret fp128
+}
+
+__float128 testFMAOdd() {
+  return __builtin_fmaf128_round_to_odd(A, B, C);
+// CHECK: @llvm.ppc.fmaf128.round.to.odd(fp128 %{{.+}}, fp128 %{{.+}}, fp128
+// CHECK-NEXT: ret fp128
+}
+
+__float128 testAddOdd() {
+  return __builtin_addf128_round_to_odd(A, B);
+// CHECK: @llvm.ppc.addf128.round.to.odd(fp128 %{{.+}}, fp128
+// CHECK-NEXT: ret fp128
+}
+
+__float128 testSubOdd() {
+  return __builtin_subf128_round_to_odd(A, B);
+// CHECK: @llvm.ppc.subf128.round.to.odd(fp128 %{{.+}}, fp128
+// CHECK-NEXT: ret fp128
+}
+
+__float128 testMulOdd() {
+  return __builtin_mulf128_round_to_odd(A, B);
+// CHECK: @llvm.ppc.mulf128.round.to.odd(fp128 %{{.+}}, fp128
+// CHECK-NEXT: ret fp128
+}
+
+__float128 testDivOdd() {
+  return __builtin_divf128_round_to_odd(A, B);
+// CHECK: @llvm.ppc.divf128.round.to.odd(fp128 %{{.+}}, fp128
+// CHECK-NEXT: ret fp128
+}
+
+