Try harder to get the compiler to use float registers in different
places to increase the chance of messing up any preserved registers.
git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@207938 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/unwind_06.cpp b/test/unwind_06.cpp
index 881b72e..dd505c8 100644
--- a/test/unwind_06.cpp
+++ b/test/unwind_06.cpp
@@ -14,30 +14,38 @@
// Compile with -Os to get compiler uses float registers to hold float variables
-__attribute__((noinline))
-double get(int x) { return (double)x; }
+double get_(int x) { return (double)x; }
+double (* volatile get)(int) = get_;
+
+volatile int counter;
double try1(bool v) {
double a = get(0);
- double b = get(0);
+ double b = get(1);
+ for (counter = 100; counter; --counter)
+ a += get(1) + b;
if (v) throw 10;
return get(0)+a+b;
}
double try2(bool v) {
double a = get(0);
- double b = get(0);
- double c = get(0);
+ double b = get(1);
+ double c = get(2);
+ for (counter = 100; counter; --counter)
+ a += get(1) + b + c;
if (v) throw 10;
return get(0)+a+b+c;
}
double try3(bool v) {
double a = get(0);
- double b = get(0);
- double c = get(0);
- double d = get(0);
+ double b = get(1);
+ double c = get(2);
+ double d = get(3);
+ for (counter = 100; counter; --counter)
+ a += get(1) + b + c + d;
if (v) throw 10;
return get(0)+a+b+c+d;
}
@@ -48,6 +56,8 @@
double c = get(0);
double d = get(0);
double e = get(0);
+ for (counter = 100; counter; --counter)
+ a += get(1) + b+c+d+e;
if (v) throw 10;
return get(0)+a+b+c+d+e;
}
@@ -59,6 +69,8 @@
double d = get(0);
double e = get(0);
double f = get(0);
+ for (counter = 100; counter; --counter)
+ a += get(1) + b+c+d+e+f;
if (v) throw 10;
return get(0)+a+b+c+d+e+f;
}
@@ -71,6 +83,8 @@
double e = get(0);
double f = get(0);
double g = get(0);
+ for (counter = 100; counter; --counter)
+ a += get(1) + b+c+d+e+f+g;
if (v) throw 10;
return get(0)+a+b+c+d+e+f+g;
}
@@ -84,6 +98,8 @@
double f = get(0);
double g = get(0);
double h = get(0);
+ for (counter = 100; counter; --counter)
+ a += get(1) + b+c+d+e+f+g;
if (v) throw 10;
return get(0)+a+b+c+d+e+f+g;
}
@@ -98,6 +114,8 @@
double g = get(0);
double h = get(0);
double i = get(0);
+ for (counter = 100; counter; --counter)
+ a += get(1) + b+c+d+e+f+g+i;
if (v) throw 10;
return get(0)+a+b+c+d+e+f+g+i;
}
