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
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2016-01-11 H.J. Lu <hongjiu.lu@intel.com>
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PR target/69225
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* config/i386/i386.h (TARGET_FLT_EVAL_METHOD): Set to 2 only if
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TARGET_80387 is true.
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2016-01-11 Jakub Jelinek <jakub@redhat.com>
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PR target/69071
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@ -694,7 +694,7 @@ extern const char *host_detect_local_cpu (int argc, const char **argv);
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the rounding precision is indeterminate, since either may be chosen
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apparently at random. */
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#define TARGET_FLT_EVAL_METHOD \
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(TARGET_MIX_SSE_I387 ? -1 : TARGET_SSE_MATH ? 0 : 2)
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(TARGET_MIX_SSE_I387 ? -1 : (TARGET_80387 && !TARGET_SSE_MATH) ? 2 : 0)
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/* Whether to allow x87 floating-point arithmetic on MODE (one of
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SFmode, DFmode and XFmode) in the current excess precision
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@ -1,3 +1,13 @@
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2016-01-11 H.J. Lu <hongjiu.lu@intel.com>
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PR target/69225
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* gcc.target/i386/pr69225-1.c: New test.
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* gcc.target/i386/pr69225-2.c: Likewise.
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* gcc.target/i386/pr69225-3.c: Likewise.
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* gcc.target/i386/pr69225-4.c: Likewise.
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* gcc.target/i386/pr69225-5.c: Likewise.
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* gcc.target/i386/pr69225-6.c: Likewise.
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2016-01-11 Jakub Jelinek <jakub@redhat.com>
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PR target/67462
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/* { dg-do compile} */
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/* { dg-options "-msse2 -mfpmath=sse" } */
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#include <float.h>
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#if FLT_EVAL_METHOD != 0
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# error FLT_EVAL_METHOD != 0
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#endif
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@ -0,0 +1,8 @@
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/* { dg-do compile} */
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/* { dg-options "-mno-sse -mno-80387" } */
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#include <float.h>
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#if FLT_EVAL_METHOD != 0
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# error FLT_EVAL_METHOD != 0
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#endif
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@ -0,0 +1,8 @@
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/* { dg-do compile} */
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/* { dg-options "-m80387 -mfpmath=387" } */
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#include <float.h>
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#if FLT_EVAL_METHOD != 2
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# error FLT_EVAL_METHOD != 2
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#endif
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@ -0,0 +1,8 @@
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/* { dg-do compile} */
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/* { dg-options "-msse2 -mfancy-math-387 -mfpmath=sse" } */
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#include <float.h>
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#if FLT_EVAL_METHOD != 0
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# error FLT_EVAL_METHOD != 0
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#endif
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@ -0,0 +1,8 @@
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/* { dg-do compile} */
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/* { dg-options "-msse2 -m80387 -mfpmath=sse,387" } */
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#include <float.h>
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#if FLT_EVAL_METHOD != -1
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# error FLT_EVAL_METHOD != -1
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#endif
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@ -0,0 +1,8 @@
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/* { dg-do compile} */
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/* { dg-options "-mno-80387" } */
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#include <float.h>
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#if FLT_EVAL_METHOD != 0
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# error FLT_EVAL_METHOD != 0
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#endif
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