From 257da5afe5812ade74c1cd43f6247f86929f97a6 Mon Sep 17 00:00:00 2001
From: David Nadlinger <code@klickverbot.at>
Date: Sun, 13 Oct 2013 20:26:19 +0200
Subject: [PATCH] Bring back -disable-fp-elim.

It was moved to llvm/CodeGen/CommandLineFlags.h.

GitHub: Fixes #502.
---
 driver/cl_options.cpp    | 4 ++++
 driver/cl_options.h      | 1 +
 driver/main.cpp          | 2 +-
 driver/targetmachine.cpp | 4 ++--
 driver/targetmachine.h   | 2 +-
 tests/d2/dmd-testsuite   | 2 +-
 6 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/driver/cl_options.cpp b/driver/cl_options.cpp
index 643b901c..023be21f 100644
--- a/driver/cl_options.cpp
+++ b/driver/cl_options.cpp
@@ -325,6 +325,10 @@ cl::opt<FloatABI::Type> mFloatABI("float-abi",
         clEnumValN(FloatABI::Hard, "hard", "Hardware floating-point ABI and instructions"),
         clEnumValEnd));
 
+cl::opt<bool> disableFpElim("disable-fp-elim",
+              cl::desc("Disable frame pointer elimination optimization"),
+              cl::init(false));
+
 static cl::opt<bool, true, FlagParser> asserts("asserts",
     cl::desc("(*) Enable assertions"),
     cl::value_desc("bool"),
diff --git a/driver/cl_options.h b/driver/cl_options.h
index 4cc67c68..d0b84043 100644
--- a/driver/cl_options.h
+++ b/driver/cl_options.h
@@ -61,6 +61,7 @@ namespace opts {
     extern cl::opt<std::string> mTargetTriple;
     extern cl::opt<llvm::Reloc::Model> mRelocModel;
     extern cl::opt<llvm::CodeModel::Model> mCodeModel;
+    extern cl::opt<bool> disableFpElim;
     extern cl::opt<FloatABI::Type> mFloatABI;
     extern cl::opt<bool, true> singleObj;
     extern cl::opt<bool> linkonceTemplates;
diff --git a/driver/main.cpp b/driver/main.cpp
index f349cc4a..14f18c71 100644
--- a/driver/main.cpp
+++ b/driver/main.cpp
@@ -637,7 +637,7 @@ int main(int argc, char **argv)
 
     gTargetMachine = createTargetMachine(mTargetTriple, mArch, mCPU, mAttrs,
         bitness, mFloatABI, mRelocModel, mCodeModel, codeGenOptLevel(),
-        global.params.symdebug);
+        global.params.symdebug || disableFpElim);
 
     {
         llvm::Triple triple = llvm::Triple(gTargetMachine->getTargetTriple());
diff --git a/driver/targetmachine.cpp b/driver/targetmachine.cpp
index 4be79b08..650c5558 100644
--- a/driver/targetmachine.cpp
+++ b/driver/targetmachine.cpp
@@ -262,7 +262,7 @@ llvm::TargetMachine* createTargetMachine(
     llvm::Reloc::Model relocModel,
     llvm::CodeModel::Model codeModel,
     llvm::CodeGenOpt::Level codeGenOptLevel,
-    bool genDebugInfo)
+    bool noFramePointerElim)
 {
     // Determine target triple. If the user didn't explicitly specify one, use
     // the one set at LLVM configure time.
@@ -362,7 +362,7 @@ llvm::TargetMachine* createTargetMachine(
     }
 
     llvm::TargetOptions targetOptions;
-    targetOptions.NoFramePointerElim = genDebugInfo;
+    targetOptions.NoFramePointerElim = noFramePointerElim;
 
     switch (floatABI)
     {
diff --git a/driver/targetmachine.h b/driver/targetmachine.h
index 83106bb3..e0236d08 100644
--- a/driver/targetmachine.h
+++ b/driver/targetmachine.h
@@ -54,6 +54,6 @@ llvm::TargetMachine* createTargetMachine(
     llvm::Reloc::Model relocModel,
     llvm::CodeModel::Model codeModel,
     llvm::CodeGenOpt::Level codeGenOptLevel,
-    bool genDebugInfo);
+    bool noFramePointerElim);
 
 #endif // LDC_DRIVER_TARGET_H
diff --git a/tests/d2/dmd-testsuite b/tests/d2/dmd-testsuite
index e996666c..ab51931e 160000
--- a/tests/d2/dmd-testsuite
+++ b/tests/d2/dmd-testsuite
@@ -1 +1 @@
-Subproject commit e996666c8511b473a80a736d2e504259f19041d8
+Subproject commit ab51931e8ded2854717bcde45b3829432de44b72