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Fix TestRegisterVariables.py on Windows 

Use __attribute__((regparm(x))) to ensure the compiler enregisters at least some arguments when calling functions.

Differential Revision: http://reviews.llvm.org/D19548

llvm-svn: 267616
This commit is contained in:
Adrian McCarthy 2016-04-26 22:25:40 +00:00
parent d2d2aa52cd
commit fd5c9be4bb
1 changed files with 3 additions and 3 deletions
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6
lldb/packages/Python/lldbsuite/test/lang/c/register_variables/test.c
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@ -5,20 +5,20 @@ struct bar {
int m2; int m2;
}; };
void f1(int a, struct bar *b) __attribute__ ((noinline)); void f1(int a, struct bar *b) __attribute__((noinline)) __attribute__((regparm(2)));
void f1(int a, struct bar *b) void f1(int a, struct bar *b)
{ {
b->m2 = b->m1 + a; // set breakpoint here b->m2 = b->m1 + a; // set breakpoint here
} }
void f2(struct bar *b) __attribute__ ((noinline)); void f2(struct bar *b) __attribute__((noinline)) __attribute__((regparm(1)));
void f2(struct bar *b) void f2(struct bar *b)
{ {
int c = b->m2; int c = b->m2;
printf("%d\n", c); // set breakpoint here printf("%d\n", c); // set breakpoint here
} }
float f3() __attribute__ ((noinline)); float f3() __attribute__((noinline));
float f3() { float f3() {
return 3.14f; return 3.14f;
} }