From: Daniel Jasper <djasper@google.com>
Date: Mon, 23 Mar 2015 05:52:28 +0000 (+0000)
Subject: Revert "Add CodeGen support for adding cpu attributes on functions based on"
X-Git-Tag: llvmorg-3.7.0-rc1~8620
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=17ae9f02060e611fd1e1cc2f693869efe0960ff4;p=platform%2Fupstream%2Fllvm.git

Revert "Add CodeGen support for adding cpu attributes on functions based on"

This breaks CodeGen for an internal target. I'll get repro instructions
to you.

llvm-svn: 232930
---

diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp
index 4b4fa7c..3cb72bd 100644
--- a/clang/lib/CodeGen/CGCall.cpp
+++ b/clang/lib/CodeGen/CGCall.cpp
@@ -31,7 +31,6 @@
 #include "llvm/IR/InlineAsm.h"
 #include "llvm/IR/Intrinsics.h"
 #include "llvm/Transforms/Utils/Local.h"
-#include <sstream>
 using namespace clang;
 using namespace CodeGen;
 
@@ -1476,26 +1475,6 @@ void CodeGenModule::ConstructAttributeList(const CGFunctionInfo &FI,
 
     if (!CodeGenOpts.StackRealignment)
       FuncAttrs.addAttribute("no-realign-stack");
-
-    // Add target-cpu and target-features work if they differ from the defaults.
-    std::string &CPU = getTarget().getTargetOpts().CPU;
-    if (CPU != "" && CPU != getTarget().getTriple().getArchName())
-      FuncAttrs.addAttribute("target-cpu", getTarget().getTargetOpts().CPU);
-
-    // TODO: FeaturesAsWritten gets us the features on the command line,
-    // for canonicalization purposes we might want to avoid putting features
-    // in the target-features set if we know it'll be one of the default
-    // features in the backend, e.g. corei7-avx and +avx.
-    std::vector<std::string> &Features =
-      getTarget().getTargetOpts().FeaturesAsWritten;
-    if (!Features.empty()) {
-      std::stringstream S;
-      std::copy(Features.begin(), Features.end(),
-                std::ostream_iterator<std::string>(S, ","));
-      // The drop_back gets rid of the trailing space.
-      FuncAttrs.addAttribute("target-features",
-                             StringRef(S.str()).drop_back(1));
-    }
   }
 
   ClangToLLVMArgMapping IRFunctionArgs(getContext(), FI);
diff --git a/clang/test/CodeGen/function-target-features.c b/clang/test/CodeGen/function-target-features.c
deleted file mode 100644
index 5665b1f..0000000
--- a/clang/test/CodeGen/function-target-features.c
+++ /dev/null
@@ -1,21 +0,0 @@
-// This test verifies that we produce target-cpu and target-features attributes
-// on functions when they're different from the standard cpu and have written
-// features.
-
-// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -target-feature +avx | FileCheck %s -check-prefix=AVX-FEATURE
-// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -target-feature +avx | FileCheck %s -check-prefix=AVX-NO-CPU
-// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -target-feature +avx512f -target-feature +avx512er | FileCheck %s -check-prefix=TWO-AVX
-// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -target-cpu corei7 | FileCheck %s -check-prefix=CORE-CPU
-// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -target-cpu corei7 -target-feature +avx | FileCheck %s -check-prefix=CORE-CPU-AND-FEATURES
-// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -target-cpu x86-64 | FileCheck %s -check-prefix=X86-64-CPU-NOT
-// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s -target-cpu corei7-avx -target-feature -avx | FileCheck %s -check-prefix=AVX-MINUS-FEATURE
-
-void foo() {}
-
-// AVX-FEATURE: "target-features"="+avx"
-// AVX-NO-CPU-NOT: target-cpu
-// TWO-AVX: "target-features"="+avx512f,+avx512er"
-// CORE-CPU: "target-cpu"="corei7"
-// CORE-CPU-AND-FEATURES: "target-cpu"="corei7" "target-features"="+avx"
-// X86-64-CPU-NOT: "target-cpu"
-// AVX-MINUS-FEATURE: "target-features"="-avx"