Correctly parse GCC-style asm line following MS-style asm line.

Quit parsing MS-style inline assembly if the following statement has GCC style.
Enables compilation of code like

void f() {
  __asm mov ebx, ecx
  __asm__("movl %ecx, %edx");
}

Differential Revision: http://reviews.llvm.org/D18652

llvm-svn: 266976

1 files changed, 28 insertions, 0 deletions

diff --git a/clang/test/CodeGen/inline-asm-mixed-style.c b/clang/test/CodeGen/inline-asm-mixed-style.c
new file mode 100644
index 00000000000..914a11d3512
--- /dev/null
+++ b/clang/test/CodeGen/inline-asm-mixed-style.c
@@ -0,0 +1,28 @@
+// RUN: %clang_cc1 -triple i386-unknown-unknown -fasm-blocks -fsyntax-only -verify %s -DCHECK_ASM_GOTO
+// RUN: %clang_cc1 -triple i386-unknown-unknown -fasm-blocks -O0 -emit-llvm -S %s -o - | FileCheck %s
+
+void f() {
+  __asm mov eax, ebx
+  __asm mov ebx, ecx
+  __asm__("movl %ecx, %edx");
+  // CHECK: movl    %ebx, %eax
+  // CHECK: movl    %ecx, %ebx
+  // CHECK: movl    %ecx, %edx
+
+  __asm mov eax, ebx
+  __asm volatile ("movl %ecx, %edx");
+  // CHECK: movl    %ebx, %eax
+  // CHECK: movl    %ecx, %edx
+
+  __asm mov eax, ebx
+  __asm const ("movl %ecx, %edx"); // expected-warning {{ignored const qualifier on asm}} 
+  // CHECK: movl    %ebx, %eax
+  // CHECK: movl    %ecx, %edx
+
+#ifdef CHECK_ASM_GOTO
+  __asm volatile goto ("movl %ecx, %edx"); // expected-error {{'asm goto' constructs are not supported yet}}
+
+  __asm mov eax, ebx
+  __asm goto ("movl %ecx, %edx"); // expected-error {{'asm goto' constructs are not supported yet}}
+#endif
+}