[Lldb-commits] [lldb] r300670 - Fix TestRegisterVariables for clang/arm

Pavel Labath via lldb-commits lldb-commits at lists.llvm.org
Wed Apr 19 03:13:30 PDT 2017

Author: labath
Date: Wed Apr 19 05:13:29 2017
New Revision: 300670

URL: http://llvm.org/viewvc/llvm-project?rev=300670&view=rev
Fix TestRegisterVariables for clang/arm

Clang rejects __attribute__((regparm)) when targetting arm. The default
calling convention passes arguments in registers anyway, so we can just
remove them in this case.


Modified: lldb/trunk/packages/Python/lldbsuite/test/lang/c/register_variables/test.c
URL: http://llvm.org/viewvc/llvm-project/lldb/trunk/packages/Python/lldbsuite/test/lang/c/register_variables/test.c?rev=300670&r1=300669&r2=300670&view=diff
--- lldb/trunk/packages/Python/lldbsuite/test/lang/c/register_variables/test.c (original)
+++ lldb/trunk/packages/Python/lldbsuite/test/lang/c/register_variables/test.c Wed Apr 19 05:13:29 2017
@@ -1,17 +1,26 @@
 #include <stdio.h>
+#if defined(__arm__) || defined(__aarch64__)
+// Clang does not accept regparm attribute on these platforms.
+// Fortunately, the default calling convention passes arguments in registers
+// anyway.
+#define REGPARM(N)
+#define REGPARM(N) __attribute__((regparm(N)))
 struct bar {
   int m1;
   int m2;
-void f1(int a, struct bar *b) __attribute__((noinline)) __attribute__((regparm(2)));
+void f1(int a, struct bar *b) __attribute__((noinline)) REGPARM(2);
 void f1(int a, struct bar *b)
   b->m2 = b->m1 + a; // set breakpoint here
-void f2(struct bar *b) __attribute__((noinline)) __attribute__((regparm(1)));
+void f2(struct bar *b) __attribute__((noinline)) REGPARM(1);
 void f2(struct bar *b)
   int c = b->m2;

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