From cf4de6af251d35f7b5a416dca9a6642d89016abf Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Tue, 12 Jan 2016 00:30:30 +0000 Subject: [PATCH] Set FLT_EVAL_METHOD to 2 only if 387 FPU is used When 387 FPU isn't used, there is no excess precision. We should set FLT_EVAL_METHOD to 2 only if 387 FPU is used. gcc/ PR target/69225 * config/i386/i386.h (TARGET_FLT_EVAL_METHOD): Set to 2 only if TARGET_80387 is true. gcc/testsuite PR target/69225 * gcc.target/i386/pr69225-1.c: New test. * gcc.target/i386/pr69225-2.c: Likewise. * gcc.target/i386/pr69225-3.c: Likewise. * gcc.target/i386/pr69225-4.c: Likewise. * gcc.target/i386/pr69225-5.c: Likewise. * gcc.target/i386/pr69225-6.c: Likewise. From-SVN: r232249 --- gcc/ChangeLog | 6 ++++++ gcc/config/i386/i386.h | 2 +- gcc/testsuite/ChangeLog | 10 ++++++++++ gcc/testsuite/gcc.target/i386/pr69225-1.c | 8 ++++++++ gcc/testsuite/gcc.target/i386/pr69225-2.c | 8 ++++++++ gcc/testsuite/gcc.target/i386/pr69225-3.c | 8 ++++++++ gcc/testsuite/gcc.target/i386/pr69225-4.c | 8 ++++++++ gcc/testsuite/gcc.target/i386/pr69225-5.c | 8 ++++++++ gcc/testsuite/gcc.target/i386/pr69225-6.c | 8 ++++++++ 9 files changed, 65 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.target/i386/pr69225-1.c create mode 100644 gcc/testsuite/gcc.target/i386/pr69225-2.c create mode 100644 gcc/testsuite/gcc.target/i386/pr69225-3.c create mode 100644 gcc/testsuite/gcc.target/i386/pr69225-4.c create mode 100644 gcc/testsuite/gcc.target/i386/pr69225-5.c create mode 100644 gcc/testsuite/gcc.target/i386/pr69225-6.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3d05c57c23df..24763e296f49 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2016-01-11 H.J. Lu + + PR target/69225 + * config/i386/i386.h (TARGET_FLT_EVAL_METHOD): Set to 2 only if + TARGET_80387 is true. + 2016-01-11 Jakub Jelinek PR target/69071 diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h index dcaa011a2be1..6c63871e7f24 100644 --- a/gcc/config/i386/i386.h +++ b/gcc/config/i386/i386.h @@ -694,7 +694,7 @@ extern const char *host_detect_local_cpu (int argc, const char **argv); the rounding precision is indeterminate, since either may be chosen apparently at random. */ #define TARGET_FLT_EVAL_METHOD \ - (TARGET_MIX_SSE_I387 ? -1 : TARGET_SSE_MATH ? 0 : 2) + (TARGET_MIX_SSE_I387 ? -1 : (TARGET_80387 && !TARGET_SSE_MATH) ? 2 : 0) /* Whether to allow x87 floating-point arithmetic on MODE (one of SFmode, DFmode and XFmode) in the current excess precision diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 36526176127a..f789ea6d12a9 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,13 @@ +2016-01-11 H.J. Lu + + PR target/69225 + * gcc.target/i386/pr69225-1.c: New test. + * gcc.target/i386/pr69225-2.c: Likewise. + * gcc.target/i386/pr69225-3.c: Likewise. + * gcc.target/i386/pr69225-4.c: Likewise. + * gcc.target/i386/pr69225-5.c: Likewise. + * gcc.target/i386/pr69225-6.c: Likewise. + 2016-01-11 Jakub Jelinek PR target/67462 diff --git a/gcc/testsuite/gcc.target/i386/pr69225-1.c b/gcc/testsuite/gcc.target/i386/pr69225-1.c new file mode 100644 index 000000000000..cc5b782326ca --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr69225-1.c @@ -0,0 +1,8 @@ +/* { dg-do compile} */ +/* { dg-options "-msse2 -mfpmath=sse" } */ + +#include + +#if FLT_EVAL_METHOD != 0 +# error FLT_EVAL_METHOD != 0 +#endif diff --git a/gcc/testsuite/gcc.target/i386/pr69225-2.c b/gcc/testsuite/gcc.target/i386/pr69225-2.c new file mode 100644 index 000000000000..cd0a6260cf60 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr69225-2.c @@ -0,0 +1,8 @@ +/* { dg-do compile} */ +/* { dg-options "-mno-sse -mno-80387" } */ + +#include + +#if FLT_EVAL_METHOD != 0 +# error FLT_EVAL_METHOD != 0 +#endif diff --git a/gcc/testsuite/gcc.target/i386/pr69225-3.c b/gcc/testsuite/gcc.target/i386/pr69225-3.c new file mode 100644 index 000000000000..1440b7463d9d --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr69225-3.c @@ -0,0 +1,8 @@ +/* { dg-do compile} */ +/* { dg-options "-m80387 -mfpmath=387" } */ + +#include + +#if FLT_EVAL_METHOD != 2 +# error FLT_EVAL_METHOD != 2 +#endif diff --git a/gcc/testsuite/gcc.target/i386/pr69225-4.c b/gcc/testsuite/gcc.target/i386/pr69225-4.c new file mode 100644 index 000000000000..b032a5f2bdfa --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr69225-4.c @@ -0,0 +1,8 @@ +/* { dg-do compile} */ +/* { dg-options "-msse2 -mfancy-math-387 -mfpmath=sse" } */ + +#include + +#if FLT_EVAL_METHOD != 0 +# error FLT_EVAL_METHOD != 0 +#endif diff --git a/gcc/testsuite/gcc.target/i386/pr69225-5.c b/gcc/testsuite/gcc.target/i386/pr69225-5.c new file mode 100644 index 000000000000..4162f7790f12 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr69225-5.c @@ -0,0 +1,8 @@ +/* { dg-do compile} */ +/* { dg-options "-msse2 -m80387 -mfpmath=sse,387" } */ + +#include + +#if FLT_EVAL_METHOD != -1 +# error FLT_EVAL_METHOD != -1 +#endif diff --git a/gcc/testsuite/gcc.target/i386/pr69225-6.c b/gcc/testsuite/gcc.target/i386/pr69225-6.c new file mode 100644 index 000000000000..cd5f41946d6a --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr69225-6.c @@ -0,0 +1,8 @@ +/* { dg-do compile} */ +/* { dg-options "-mno-80387" } */ + +#include + +#if FLT_EVAL_METHOD != 0 +# error FLT_EVAL_METHOD != 0 +#endif -- 2.47.2