Handle -mno-<feature> in target attribute strings by replacing the

-mno- with a -<feature> to match how we handle this in the rest
of the frontend.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@239581 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/CGCall.cpp b/lib/CodeGen/CGCall.cpp
index 424997d125e4dd74b700235e2a6c238ac7a57558..9be7340626982ab354410473032c4cc3216587de 100644 (file)
--- a/lib/CodeGen/CGCall.cpp
+++ b/lib/CodeGen/CGCall.cpp
@@ -1515,8 +1515,10 @@ void CodeGenModule::ConstructAttributeList(const CGFunctionInfo &FI,
          else if (Feature.startswith("tune="))
            // We don't support cpu tuning this way currently.
            ;
-         else
-           Features.push_back("+" + Feature.str());
+         else if (Feature.startswith("mno-"))
+            Features.push_back("-" + Feature.split("-").second.str());
+          else
+            Features.push_back("+" + Feature.str());
        }
       }
     }

diff --git a/test/CodeGen/attr-target.c b/test/CodeGen/attr-target.c
index 2e548cc701a0f79f8cccf44be36550499c6ca79a..e21f047ed0addd152ccbcae76a161fac8e62c998 100644 (file)
--- a/test/CodeGen/attr-target.c
+++ b/test/CodeGen/attr-target.c
@@ -6,6 +6,8 @@ int __attribute__((target("avx,sse4.2,arch=ivybridge"))) foo(int a) { return 4;
 
 int __attribute__((target("tune=sandybridge"))) walrus(int a) { return 4; }
 
+int __attribute__((target("mno-sse2"))) echidna(int a) { return 4; }
+
 int bar(int a) { return baz(a) + foo(a); }
 
 // Check that we emit the additional subtarget and cpu features for foo and not for baz or bar.
@@ -13,6 +15,8 @@ int bar(int a) { return baz(a) + foo(a); }
 // CHECK: foo{{.*}} #1
 // We ignore the tune attribute so walrus should be identical to baz and bar.
 // CHECK: walrus{{.*}} #0
+// CHECK: echidna{{.*}} #2
 // CHECK: bar{{.*}} #0
 // CHECK: #0 = {{.*}}"target-cpu"="x86-64" "target-features"="+sse,+sse2"
 // CHECK: #1 = {{.*}}"target-cpu"="ivybridge" "target-features"="+sse,+sse2,+avx,+sse4.2"
+// CHECK: #2 = {{.*}}"target-cpu"="x86-64" "target-features"="+sse,+sse2,-sse2"