commit 9bfd0d03e92d4bbb0ebf6171f5e0692edf9820c3
author Manman Ren <manman.ren@gmail.com> Fri Apr 01 21:41:15 2016 +0000
committer Manman Ren <manman.ren@gmail.com> Fri Apr 01 21:41:15 2016 +0000
tree 9a24f292b9df7e108e4a60d458c5668a2409157d
parent a3d15f3a5e645e75093f2f5f2b2065bca396c16e

Swift Calling Convention: add swifterror attribute.

A ``swifterror`` attribute can be applied to a function parameter or an
AllocaInst.

This commit does not include any target-specific change. The target-specific
optimization will come as a follow-up patch.

Differential Revision: http://reviews.llvm.org/D18092

llvm-svn: 265189

llvm/lib/CodeGen/SelectionDAG/FastISel.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
index cff78c4..b89d6a0 100644
--- a/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/FastISel.cpp
@@ -90,6 +90,7 @@
   IsInAlloca = CS->paramHasAttr(AttrIdx, Attribute::InAlloca);
   IsReturned = CS->paramHasAttr(AttrIdx, Attribute::Returned);
   IsSwiftSelf = CS->paramHasAttr(AttrIdx, Attribute::SwiftSelf);
+  IsSwiftError = CS->paramHasAttr(AttrIdx, Attribute::SwiftError);
   Alignment = CS->getParamAlignment(AttrIdx);
 }
 
@@ -960,6 +961,8 @@
       Flags.setSRet();
     if (Arg.IsSwiftSelf)
       Flags.setSwiftSelf();
+    if (Arg.IsSwiftError)
+      Flags.setSwiftError();
     if (Arg.IsByVal)
       Flags.setByVal();
     if (Arg.IsInAlloca) {

llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index e3acfd2..db145cf 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -7282,6 +7282,7 @@
     Entry.isByVal = false;
     Entry.isReturned = false;
     Entry.isSwiftSelf = false;
+    Entry.isSwiftError = false;
     Entry.Alignment = Align;
     CLI.getArgs().insert(CLI.getArgs().begin(), Entry);
     CLI.RetTy = Type::getVoidTy(CLI.RetTy->getContext());
@@ -7341,6 +7342,8 @@
         Flags.setSRet();
       if (Args[i].isSwiftSelf)
         Flags.setSwiftSelf();
+      if (Args[i].isSwiftError)
+        Flags.setSwiftError();
       if (Args[i].isByVal)
         Flags.setByVal();
       if (Args[i].isInAlloca) {
@@ -7623,6 +7626,8 @@
         Flags.setSRet();
       if (F.getAttributes().hasAttribute(Idx, Attribute::SwiftSelf))
         Flags.setSwiftSelf();
+      if (F.getAttributes().hasAttribute(Idx, Attribute::SwiftError))
+        Flags.setSwiftError();
       if (F.getAttributes().hasAttribute(Idx, Attribute::ByVal))
         Flags.setByVal();
       if (F.getAttributes().hasAttribute(Idx, Attribute::InAlloca)) {

llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp

diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
index 418ab63..366b7f8 100644
--- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp
@@ -78,6 +78,7 @@
   isInAlloca = CS->paramHasAttr(AttrIdx, Attribute::InAlloca);
   isReturned = CS->paramHasAttr(AttrIdx, Attribute::Returned);
   isSwiftSelf = CS->paramHasAttr(AttrIdx, Attribute::SwiftSelf);
+  isSwiftError = CS->paramHasAttr(AttrIdx, Attribute::SwiftError);
   Alignment  = CS->getParamAlignment(AttrIdx);
 }