[WebAssembly] Fix signatures of frexpf family of libcalls (#133289)

Fixes: emscripten-core/emscripten#23997

Author: sbc100

llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp

@@ -278,9 +278,9 @@ struct RuntimeLibcallSignatureTable {
     Table[RTLIB::LDEXP_F32] = f32_func_f32_i32;
     Table[RTLIB::LDEXP_F64] = f64_func_f64_i32;
     Table[RTLIB::LDEXP_F128] = i64_i64_func_i64_i64_i32;
-    Table[RTLIB::FREXP_F32] = f32_func_f32_i32;
-    Table[RTLIB::FREXP_F64] = f64_func_f64_i32;
-    Table[RTLIB::FREXP_F128] = i64_i64_func_i64_i64_i32;
+    Table[RTLIB::FREXP_F32] = f32_func_f32_iPTR;
+    Table[RTLIB::FREXP_F64] = f64_func_f64_iPTR;
+    Table[RTLIB::FREXP_F128] = i64_i64_func_i64_i64_iPTR;
     Table[RTLIB::MODF_F32] = f32_func_f32_iPTR;
     Table[RTLIB::MODF_F64] = f64_func_f64_iPTR;
     Table[RTLIB::MODF_F128] = i64_i64_func_i64_i64_iPTR;