[FPEnv] [Clang] Enable constrained FP support for PowerPC

d4ce862 introduced HasStrictFP to disable generating constrained FP operations for platforms lacking support. Since work for enabling constrained FP on PowerPC is almost done, we'd like to enable it. Reviewed By: kpn, steven.zhang Differential Revision: https://reviews.llvm.org/D87223

Author: ecnelises

clang/lib/Basic/Targets/PPC.h

@@ -82,6 +82,7 @@ class LLVM_LIBRARY_VISIBILITY PPCTargetInfo : public TargetInfo {
  SimdDefaultAlign = 128;
  LongDoubleWidth = LongDoubleAlign = 128;
  LongDoubleFormat = &llvm::APFloat::PPCDoubleDouble();
+ HasStrictFP = true;
  }
 
  // Set the language option for altivec based on our value.

clang/test/CodeGen/builtins-ppc-fpconstrained.c

@@ -2,14 +2,12 @@
 // RUN: %clang_cc1 -triple powerpc64le-gnu-linux -target-feature +vsx \
 // RUN: -emit-llvm %s -o - | FileCheck --check-prefix=CHECK-UNCONSTRAINED %s
 // RUN: %clang_cc1 -triple powerpc64le-gnu-linux -target-feature +vsx \
-// RUN: -fexperimental-strict-floating-point \
 // RUN: -ffp-exception-behavior=strict -emit-llvm %s -o - | FileCheck \
 // RUN: --check-prefix=CHECK-CONSTRAINED -vv %s
 // RUN: %clang_cc1 -triple powerpc64le-gnu-linux -target-feature +vsx \
 // RUN: -fallow-half-arguments-and-returns -S -o - %s | \
 // RUN: FileCheck --check-prefix=CHECK-ASM --check-prefix=NOT-FIXME-CHECK %s
 // RUN: %clang_cc1 -triple powerpc64le-gnu-linux -target-feature +vsx \
-// RUN: -fexperimental-strict-floating-point \
 // RUN: -fallow-half-arguments-and-returns -S -ffp-exception-behavior=strict \
 // RUN: -o - %s | FileCheck --check-prefix=CHECK-ASM \
 // RUN: --check-prefix=FIXME-CHECK %s