[clang] [ARM] enable FENV_ACCESS pragma support for hard-float targets (PR #137101)

[Erik Enikeev via cfe-commits]

https://github.com/Varnike created https://github.com/llvm/llvm-project/pull/137101

Added support for FENV_ACCESS pragma on hard-float ARM platforms. Also changes were made to clang/test/Parser/pragma-fp-warn.c so that for thumbv7a only the soft-float-abi target case is checked.

>From c15b9e7fa244d4f2d7277470f761e5934f680007 Mon Sep 17 00:00:00 2001
From: Erik Enikeev <evonatarius at gmail.com>
Date: Tue, 22 Apr 2025 09:47:41 -0400
Subject: [PATCH] [ARM] enable FENV_ACCESS pragma support for hard-float
 targets

---
 clang/lib/Basic/Targets/ARM.cpp    | 2 ++
 clang/test/Parser/pragma-fp-warn.c | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/clang/lib/Basic/Targets/ARM.cpp b/clang/lib/Basic/Targets/ARM.cpp
index ca2c1ffbb0eb7..e3ab6e9abf78a 100644
--- a/clang/lib/Basic/Targets/ARM.cpp
+++ b/clang/lib/Basic/Targets/ARM.cpp
@@ -363,6 +363,8 @@ ARMTargetInfo::ARMTargetInfo(const llvm::Triple &Triple,
                            : "\01mcount";
 
   SoftFloatABI = llvm::is_contained(Opts.FeaturesAsWritten, "+soft-float-abi");
+  if (!SoftFloatABI)
+    HasStrictFP = true;
 }
 
 StringRef ARMTargetInfo::getABI() const { return ABI; }
diff --git a/clang/test/Parser/pragma-fp-warn.c b/clang/test/Parser/pragma-fp-warn.c
index c52bd4e4805ab..f743cb87997dc 100644
--- a/clang/test/Parser/pragma-fp-warn.c
+++ b/clang/test/Parser/pragma-fp-warn.c
@@ -1,6 +1,6 @@
 
 // RUN: %clang_cc1 -triple wasm32 -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s
-// RUN: %clang_cc1 -triple thumbv7 -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s
+// RUN: %clang_cc1 -triple thumbv7 -fsyntax-only -target-feature +soft-float-abi  -Wno-unknown-pragmas -Wignored-pragmas -verify %s
 // RUN: %clang_cc1 -DEXPOK -triple aarch64 -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s
 // RUN: %clang_cc1 -DEXPOK -triple x86_64 -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s
 // RUN: %clang_cc1 -DEXPOK -triple systemz -fsyntax-only -Wno-unknown-pragmas -Wignored-pragmas -verify %s