From c95cfe876ed3dbc78cfaf6c61d799d11704e81b9 Mon Sep 17 00:00:00 2001
From: Eli Bendersky <eliben@google.com>
Date: Wed, 24 Jul 2013 18:20:14 +0000
Subject: [PATCH] Pass -fno-math-builtin from the Clang driver to -cc1 for the
 l32 arch.

llvm-svn: 187061
---
 clang/lib/Driver/Tools.cpp         | 7 +++++++
 clang/test/Driver/le32-toolchain.c | 4 ++++
 2 files changed, 11 insertions(+)
 create mode 100644 clang/test/Driver/le32-toolchain.c

diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 83aab8db4d72..28bf5dddeb69 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -3476,6 +3476,13 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
                    options::OPT_fno_apple_pragma_pack, false))
     CmdArgs.push_back("-fapple-pragma-pack");
 
+  // le32-specific flags: 
+  //  -fno-math-builtin: clang should not convert math builtins to intrinsics
+  //                     by default.
+  if (getToolChain().getArch() == llvm::Triple::le32) {
+    CmdArgs.push_back("-fno-math-builtin");
+  }
+
   // Default to -fno-builtin-str{cat,cpy} on Darwin for ARM.
   //
   // FIXME: This is disabled until clang -cc1 supports -fno-builtin-foo. PR4941.
diff --git a/clang/test/Driver/le32-toolchain.c b/clang/test/Driver/le32-toolchain.c
new file mode 100644
index 000000000000..bab550262edd
--- /dev/null
+++ b/clang/test/Driver/le32-toolchain.c
@@ -0,0 +1,4 @@
+// RUN: %clang -### -target le32-unknown-nacl %s 2>&1 | FileCheck -check-prefix=CHECK-DEFAULT %s
+
+// CHECK-DEFAULT: "-cc1" {{.*}} "-fno-math-builtin"
+