From 0a79d0e495964f18eae9000cf3d3637930f8e9b0 Mon Sep 17 00:00:00 2001
From: Reid Kleckner <reid@kleckner.net>
Date: Wed, 8 Jul 2015 23:57:03 +0000
Subject: [PATCH] Disable 32-bit SEH, again

Move the diagnostic back to codegen so that we can compile ATL on the
self-host bot. We don't actually end up emitting code for the __try, so
the diagnostic won't be hit.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@241761 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/clang/Basic/TargetInfo.h      | 3 +--
 lib/CodeGen/CGException.cpp           | 4 ++++
 lib/Sema/SemaStmt.cpp                 | 4 ----
 test/CodeGen/exceptions-seh-finally.c | 3 ++-
 test/CodeGen/exceptions-seh.c         | 5 +++--
 5 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/include/clang/Basic/TargetInfo.h b/include/clang/Basic/TargetInfo.h
index fed69a8281..2c32e8c22b 100644
--- a/include/clang/Basic/TargetInfo.h
+++ b/include/clang/Basic/TargetInfo.h
@@ -812,8 +812,7 @@ public:
   /// \brief Whether the target supports SEH __try.
   bool isSEHTrySupported() const {
     return getTriple().isOSWindows() &&
-           (getTriple().getArch() == llvm::Triple::x86 ||
-            getTriple().getArch() == llvm::Triple::x86_64);
+           getTriple().getArch() == llvm::Triple::x86_64;
   }
 
   /// \brief Return true if {|} are normal characters in the asm string.
diff --git a/lib/CodeGen/CGException.cpp b/lib/CodeGen/CGException.cpp
index 987ffc14a4..c7e3ed5c34 100644
--- a/lib/CodeGen/CGException.cpp
+++ b/lib/CodeGen/CGException.cpp
@@ -1280,6 +1280,10 @@ llvm::BasicBlock *CodeGenFunction::getEHResumeBlock(bool isCleanup) {
 }
 
 void CodeGenFunction::EmitSEHTryStmt(const SEHTryStmt &S) {
+  // Reject __try on unsupported targets.
+  if (!getContext().getTargetInfo().isSEHTrySupported())
+    ErrorUnsupported(&S, "SEH '__try' on this target");
+
   EnterSEHTryStmt(S);
   {
     JumpDest TryExit = getJumpDestInCurrentScope("__try.__leave");
diff --git a/lib/Sema/SemaStmt.cpp b/lib/Sema/SemaStmt.cpp
index c4f6fd8df1..3ffedf28ad 100644
--- a/lib/Sema/SemaStmt.cpp
+++ b/lib/Sema/SemaStmt.cpp
@@ -3650,10 +3650,6 @@ StmtResult Sema::ActOnSEHTryBlock(bool IsCXXTry, SourceLocation TryLoc,
   else
     Diag(TryLoc, diag::err_seh_try_outside_functions);
 
-  // Reject __try on unsupported targets.
-  if (!Context.getTargetInfo().isSEHTrySupported())
-    Diag(TryLoc, diag::err_seh_try_unsupported);
-
   return SEHTryStmt::Create(Context, IsCXXTry, TryLoc, TryBlock, Handler);
 }
 
diff --git a/test/CodeGen/exceptions-seh-finally.c b/test/CodeGen/exceptions-seh-finally.c
index 772e28306b..513a1f3c89 100644
--- a/test/CodeGen/exceptions-seh-finally.c
+++ b/test/CodeGen/exceptions-seh-finally.c
@@ -1,5 +1,6 @@
 // RUN: %clang_cc1 %s -triple x86_64-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
-// RUN: %clang_cc1 %s -triple i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
+// FIXME: Re-enable 32-bit SEH.
+// RUNX: %clang_cc1 %s -triple i686-pc-win32 -fms-extensions -emit-llvm -o - | FileCheck %s
 
 void abort(void) __attribute__((noreturn));
 void might_crash(void);
diff --git a/test/CodeGen/exceptions-seh.c b/test/CodeGen/exceptions-seh.c
index 9707a9a31b..702125b07a 100644
--- a/test/CodeGen/exceptions-seh.c
+++ b/test/CodeGen/exceptions-seh.c
@@ -1,7 +1,8 @@
 // RUN: %clang_cc1 %s -triple x86_64-pc-win32 -fms-extensions -emit-llvm -o - \
 // RUN:         | FileCheck %s --check-prefix=CHECK --check-prefix=X64
-// RUN: %clang_cc1 %s -triple i686-pc-win32 -fms-extensions -emit-llvm -o - \
-// RUN:         | FileCheck %s --check-prefix=CHECK --check-prefix=X86
+// FIXME: Re-enable 32-bit SEH.
+// RUNX: %clang_cc1 %s -triple i686-pc-win32 -fms-extensions -emit-llvm -o - \
+// RUNX:         | FileCheck %s --check-prefix=CHECK --check-prefix=X86
 
 void try_body(int numerator, int denominator, int *myres) {
   *myres = numerator / denominator;
-- 
2.50.1