[clang] [clang] Predefined macros for float128 support (PR #67196)

[Pranav Kant via cfe-commits]

https://github.com/pranavk updated https://github.com/llvm/llvm-project/pull/67196

>From 8c07729b195fa78133258b03a31e8668d70a922d Mon Sep 17 00:00:00 2001
From: Pranav Kant <prka at google.com>
Date: Fri, 22 Sep 2023 20:50:32 +0000
Subject: [PATCH 1/2] [clang] Predefined macros for float128 support

---
 clang/lib/Frontend/InitPreprocessor.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
index e5db8a654e6707d..9e4d4d398a21da5 100644
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -1076,6 +1076,8 @@ static void InitializePredefinedMacros(const TargetInfo &TI,
   DefineFloatMacros(Builder, "FLT", &TI.getFloatFormat(), "F");
   DefineFloatMacros(Builder, "DBL", &TI.getDoubleFormat(), "");
   DefineFloatMacros(Builder, "LDBL", &TI.getLongDoubleFormat(), "L");
+  if (TI.hasFloat128Type())
+    DefineFloatMacros(Builder, "FLT128", &TI.getFloat128Format(), "Q");
 
   // Define a __POINTER_WIDTH__ macro for stdint.h.
   Builder.defineMacro("__POINTER_WIDTH__",

>From 0978352c91562f82229daeb1fb65f27f04f93d97 Mon Sep 17 00:00:00 2001
From: Pranav Kant <prka at google.com>
Date: Fri, 22 Sep 2023 21:23:51 +0000
Subject: [PATCH 2/2] Fix test

---
 clang/test/Preprocessor/init.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/clang/test/Preprocessor/init.c b/clang/test/Preprocessor/init.c
index 59c5122afe1e4c3..395c4cebfa5be76 100644
--- a/clang/test/Preprocessor/init.c
+++ b/clang/test/Preprocessor/init.c
@@ -1576,6 +1576,20 @@
 // EMSCRIPTEN-NEXT:#define __EMSCRIPTEN__ 1
 // WEBASSEMBLY-NEXT:#define __FINITE_MATH_ONLY__ 0
 // WEBASSEMBLY-NEXT:#define __FLOAT128__ 1
+// WEBASSEMBLY-NEXT:#define __FLT128_DECIMAL_DIG__ 36
+// WEBASSEMBLY-NEXT:#define __FLT128_DENORM_MIN__ 6.47517511943802511092443895822764655e-4966Q
+// WEBASSEMBLY-NEXT:#define __FLT128_DIG__ 33
+// WEBASSEMBLY-NEXT:#define __FLT128_EPSILON__ 1.92592994438723585305597794258492732e-34Q
+// WEBASSEMBLY-NEXT:#define __FLT128_HAS_DENORM__ 1
+// WEBASSEMBLY-NEXT:#define __FLT128_HAS_INFINITY__ 1
+// WEBASSEMBLY-NEXT:#define __FLT128_HAS_QUIET_NAN__ 1
+// WEBASSEMBLY-NEXT:#define __FLT128_MANT_DIG__ 113
+// WEBASSEMBLY-NEXT:#define __FLT128_MAX_10_EXP__ 4932
+// WEBASSEMBLY-NEXT:#define __FLT128_MAX_EXP__ 16384
+// WEBASSEMBLY-NEXT:#define __FLT128_MAX__ 1.18973149535723176508575932662800702e+4932Q
+// WEBASSEMBLY-NEXT:#define __FLT128_MIN_10_EXP__ (-4931)
+// WEBASSEMBLY-NEXT:#define __FLT128_MIN_EXP__ (-16381)
+// WEBASSEMBLY-NEXT:#define __FLT128_MIN__ 3.36210314311209350626267781732175260e-4932Q
 // WEBASSEMBLY-NOT:#define __FLT16_DECIMAL_DIG__
 // WEBASSEMBLY-NOT:#define __FLT16_DENORM_MIN__
 // WEBASSEMBLY-NOT:#define __FLT16_DIG__