From 554fd8c5195424bdbcabf5de30fdc183aba391bd Mon Sep 17 00:00:00 2001 From: upstream source tree Date: Sun, 15 Mar 2015 20:14:05 -0400 Subject: obtained gcc-4.6.4.tar.bz2 from upstream website; verified gcc-4.6.4.tar.bz2.sig; imported gcc-4.6.4 source tree from verified upstream tarball. downloading a git-generated archive based on the 'upstream' tag should provide you with a source tree that is binary identical to the one extracted from the above tarball. if you have obtained the source via the command 'git clone', however, do note that line-endings of files in your working directory might differ from line-endings of the respective files in the upstream repository. --- gcc/testsuite/g++.dg/opt/cse3.C | 48 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 gcc/testsuite/g++.dg/opt/cse3.C (limited to 'gcc/testsuite/g++.dg/opt/cse3.C') diff --git a/gcc/testsuite/g++.dg/opt/cse3.C b/gcc/testsuite/g++.dg/opt/cse3.C new file mode 100644 index 000000000..a63280716 --- /dev/null +++ b/gcc/testsuite/g++.dg/opt/cse3.C @@ -0,0 +1,48 @@ +// This testcase resulted in invalid code generation on x86_64 targets +// due to a bug in fold_rtx. For a "true" value, fold_rtx represented it +// as const_true_rtx in floating-point mode, if the FLOAT_STORE_FLAG_VALUE +// macro is not defined. + +// { dg-do run } +// { dg-options "-O1 -fno-guess-branch-probability -fcse-follow-jumps -fgcse -frerun-cse-after-loop" } + +class StatVal { + + public: + + StatVal(double ev, double va) + : m(ev), + v(va) {} + + StatVal(const StatVal& other) + : m(other.m), + v(other.v) {} + + StatVal& operator*=(const StatVal& other) { + double A = m == 0 ? 1.0 : v / (m * m); + double B = other.m == 0 ? 1.0 : other.v / (other.m * other.m); + m = m * other.m; + v = m * m * (A + B); + return *this; + } + + double m; + double v; +}; + +extern "C" void abort (void); + +const StatVal two_dot_three(2, 0.3); + +int main(int argc, char **argv) { + + StatVal product3(two_dot_three); + + product3 *= two_dot_three; + + if (product3.v > 2.5) + { + abort(); + } + return 0; +} -- cgit v1.2.3