[clang] [FPEnv] Add strictfp in some C++ constructors lacking a FunctionDecl. (PR #74883)

[John McCall via cfe-commits]

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@@ -6,14 +7,80 @@ float z();
 #pragma float_control(except, on)
 class ON {
   float w = 2 + y() * z();
-  // CHECK-LABEL: define {{.*}} @_ZN2ONC2Ev{{.*}}
-  // CHECK: llvm.experimental.constrained.fmul{{.*}}tonearest{{.*}}strict
 };
 ON on;
 #pragma float_control(except, off)
 class OFF {
   float w = 2 + y() * z();
-  // CHECK-LABEL: define {{.*}} @_ZN3OFFC2Ev{{.*}}
-  // CHECK-NOT: llvm.experimental.constrained.fmul{{.*}}tonearest{{.*}}strict
 };
 OFF off;
+// CHECK-LABEL: define internal void @__cxx_global_var_init(
+// CHECK-SAME: ) #[[ATTR0:[0-9]+]] section ".text.startup" {
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rjmccall wrote:

1. Are all of these checks necessary?  If so, please explain why in the test so that maintainers will understand what you're testing for.
2. Do you need to be checking the actual content of the attributes here?

https://github.com/llvm/llvm-project/pull/74883