diff options
author | Joerg Sonnenberger <joerg@bec.de> | 2014-05-04 16:31:33 +0000 |
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committer | Joerg Sonnenberger <joerg@bec.de> | 2014-05-04 16:31:33 +0000 |
commit | 5db9aa48b796e95cf61ac02d31fd7a0c13a98bea (patch) | |
tree | 0c12742bf840abeb780130c6e99f848401520585 /test | |
parent | 68d64037c9cd1420b947d2d401ea4bbcc8048564 (diff) |
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
Diffstat (limited to 'test')
-rw-r--r-- | test/unwind_06.cpp | 34 |
1 files changed, 26 insertions, 8 deletions
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 try4(bool v) { 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 try5(bool v) { 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 try6(bool v) { 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 try7(bool v) { 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 try8(bool v) { 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; } |