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/gcc.target/powerpc/ppc-fma-7.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 gcc/testsuite/gcc.target/powerpc/ppc-fma-7.c (limited to 'gcc/testsuite/gcc.target/powerpc/ppc-fma-7.c') diff --git a/gcc/testsuite/gcc.target/powerpc/ppc-fma-7.c b/gcc/testsuite/gcc.target/powerpc/ppc-fma-7.c new file mode 100644 index 000000000..ec0c3d740 --- /dev/null +++ b/gcc/testsuite/gcc.target/powerpc/ppc-fma-7.c @@ -0,0 +1,18 @@ +/* { dg-do compile { target { powerpc*-*-* } } } */ +/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */ +/* { dg-require-effective-target powerpc_altivec_ok } */ +/* { dg-options "-O3 -ftree-vectorize -mcpu=power6 -ffast-math" } */ +/* { dg-final { scan-assembler-times "fmadd" 1 } } */ +/* { dg-final { scan-assembler-times "fmsub " 1 } } */ +/* { dg-final { scan-assembler-not "fmul" } } */ +/* { dg-final { scan-assembler-not "fadd " } } */ + +/* Check whether the common FFT idiom (a*b)+c and (a*b)-c generates two fma + instructions, instead of a multiply, add, and subtract. */ + +void +fft (double *result, double a, double b, double c) +{ + result[0] = (a*b) + c; + result[1] = (a*b) - c; +} -- cgit v1.2.3