From b45d3a36267d7ce6bb397f0c3ed453ff71a23472 Mon Sep 17 00:00:00 2001 From: "Kaveh R. Ghazi" Date: Wed, 10 Mar 2004 18:18:22 +0000 Subject: [PATCH] fold-const.c (tree_expr_nonnegative_p): Add more builtin cases. * fold-const.c (tree_expr_nonnegative_p): Add more builtin cases. testsuite: * gcc.dg/torture/builtin-nonneg-1.c: New test. From-SVN: r79269 --- gcc/ChangeLog | 4 + gcc/fold-const.c | 39 ++++ gcc/testsuite/ChangeLog | 4 + .../gcc.dg/torture/builtin-nonneg-1.c | 172 ++++++++++++++++++ 4 files changed, 219 insertions(+) create mode 100644 gcc/testsuite/gcc.dg/torture/builtin-nonneg-1.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 0084f630ec7..7366aaa65f1 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,7 @@ +2004-03-10 Kaveh R. Ghazi + + * fold-const.c (tree_expr_nonnegative_p): Add more builtin cases. + 2004-03-10 David Edelsohn * config/rs6000/rs6000-c.c (rs6000_cpu_cpp_builtins): Define diff --git a/gcc/fold-const.c b/gcc/fold-const.c index a735bf8be3f..58b6c70df4c 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -8895,27 +8895,66 @@ tree_expr_nonnegative_p (tree t) #define CASE_BUILTIN_I(BUILT_IN_FN) \ case BUILT_IN_FN: case BUILT_IN_FN##L: case BUILT_IN_FN##LL: + CASE_BUILTIN_F (BUILT_IN_ACOS) + CASE_BUILTIN_F (BUILT_IN_ACOSH) CASE_BUILTIN_F (BUILT_IN_CABS) + CASE_BUILTIN_F (BUILT_IN_COSH) + CASE_BUILTIN_F (BUILT_IN_ERFC) CASE_BUILTIN_F (BUILT_IN_EXP) CASE_BUILTIN_F (BUILT_IN_EXP10) CASE_BUILTIN_F (BUILT_IN_EXP2) CASE_BUILTIN_F (BUILT_IN_FABS) + CASE_BUILTIN_F (BUILT_IN_FDIM) + CASE_BUILTIN_F (BUILT_IN_FREXP) + CASE_BUILTIN_F (BUILT_IN_HYPOT) CASE_BUILTIN_F (BUILT_IN_POW10) CASE_BUILTIN_F (BUILT_IN_SQRT) CASE_BUILTIN_I (BUILT_IN_FFS) CASE_BUILTIN_I (BUILT_IN_PARITY) CASE_BUILTIN_I (BUILT_IN_POPCOUNT) + /* Always true. */ return 1; + CASE_BUILTIN_F (BUILT_IN_ASINH) CASE_BUILTIN_F (BUILT_IN_ATAN) + CASE_BUILTIN_F (BUILT_IN_ATANH) + CASE_BUILTIN_F (BUILT_IN_CBRT) CASE_BUILTIN_F (BUILT_IN_CEIL) + CASE_BUILTIN_F (BUILT_IN_ERF) + CASE_BUILTIN_F (BUILT_IN_EXPM1) CASE_BUILTIN_F (BUILT_IN_FLOOR) + CASE_BUILTIN_F (BUILT_IN_FMOD) + CASE_BUILTIN_F (BUILT_IN_LDEXP) + CASE_BUILTIN_F (BUILT_IN_LLRINT) + CASE_BUILTIN_F (BUILT_IN_LLROUND) + CASE_BUILTIN_F (BUILT_IN_LRINT) + CASE_BUILTIN_F (BUILT_IN_LROUND) + CASE_BUILTIN_F (BUILT_IN_MODF) CASE_BUILTIN_F (BUILT_IN_NEARBYINT) CASE_BUILTIN_F (BUILT_IN_POW) + CASE_BUILTIN_F (BUILT_IN_RINT) CASE_BUILTIN_F (BUILT_IN_ROUND) + CASE_BUILTIN_F (BUILT_IN_SIGNBIT) + CASE_BUILTIN_F (BUILT_IN_SINH) + CASE_BUILTIN_F (BUILT_IN_TANH) CASE_BUILTIN_F (BUILT_IN_TRUNC) + /* True if the 1st argument is nonnegative. */ return tree_expr_nonnegative_p (TREE_VALUE (arglist)); + CASE_BUILTIN_F(BUILT_IN_FMAX) + /* True if the 1st OR 2nd arguments are nonnegative. */ + return tree_expr_nonnegative_p (TREE_VALUE (arglist)) + || tree_expr_nonnegative_p (TREE_VALUE (TREE_CHAIN (arglist))); + + CASE_BUILTIN_F(BUILT_IN_FMIN) + /* True if the 1st AND 2nd arguments are nonnegative. */ + return tree_expr_nonnegative_p (TREE_VALUE (arglist)) + && tree_expr_nonnegative_p (TREE_VALUE (TREE_CHAIN (arglist))); + + CASE_BUILTIN_F(BUILT_IN_COPYSIGN) + /* True if the 2nd argument is nonnegative. */ + return tree_expr_nonnegative_p (TREE_VALUE (TREE_CHAIN (arglist))); + default: break; #undef CASE_BUILTIN_F diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 31baa1d1c43..b2aef9c75e2 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,7 @@ +2004-03-10 Kaveh R. Ghazi + + * gcc.dg/torture/builtin-nonneg-1.c: New test. + 2004-03-09 James E Wilson * gcc.dg/alias-1.c: Add "will" to string passed to dg-warning. diff --git a/gcc/testsuite/gcc.dg/torture/builtin-nonneg-1.c b/gcc/testsuite/gcc.dg/torture/builtin-nonneg-1.c new file mode 100644 index 00000000000..80cf3e3c83b --- /dev/null +++ b/gcc/testsuite/gcc.dg/torture/builtin-nonneg-1.c @@ -0,0 +1,172 @@ +/* Copyright (C) 2004 Free Software Foundation. + + Verify that GCC can determine which built-in functions produce a + nonnegative result. + + Written by Kaveh Ghazi, 2004-03-10. */ + +/* { dg-do link } */ +/* { dg-options "-ffast-math" } */ + +#define PROTOTYPE_RTYPE(FN,RTYPE) extern RTYPE FN(double); \ + extern RTYPE FN##f(float); \ + extern RTYPE FN##l(long double); +#define PROTOTYPE(FN) extern double FN(double); extern float FN##f(float); \ + extern long double FN##l(long double); +#define PROTOTYPE2(FN) extern double FN(double, double); \ + extern float FN##f(float, float); \ + extern long double FN##l(long double, long double); +#define CPROTOTYPE1(FN) extern double FN(_Complex double); \ + extern float FN##f(_Complex float); \ + extern long double FN##l(_Complex long double); +#define CPROTOTYPE1(FN) extern double FN(_Complex double); \ + extern float FN##f(_Complex float); \ + extern long double FN##l(_Complex long double); +#define IPROTOTYPE(FN) extern int FN(int); extern int FN##l(long); \ + extern int FN##ll(long long); +#define PROTOTYPE2TYPE2(FN,A2TYPE) extern double FN(double, A2TYPE); \ + extern float FN##f(float, A2TYPE); \ + extern long double FN##l(long double, A2TYPE); +#define PROTOTYPE2_A2FPTR(FN) extern double FN(double, double *); \ + extern float FN##f(float, float *); \ + extern long double FN##l(long double, long double *); + +extern int signbit (double); +extern int signbitf (float); +extern int signbitl (long double); + +void test(double d1, double d2, float f1, float f2, + long double ld1, long double ld2) +{ + /* These are always nonnegative. */ + +#define TEST1(FN) \ + extern void link_failure_##FN (void); PROTOTYPE(FN) \ + if (signbit(FN(d1)) || signbitf(FN##f(f1)) || signbitl(FN##l(ld1))) \ + link_failure_##FN() + +#define TEST2(FN) \ + extern void link_failure_##FN (void); PROTOTYPE2(FN) \ + if (signbit(FN(d1,d2)) || signbitf(FN##f(f1,f2)) || signbitl(FN##l(ld1,ld2))) \ + link_failure_##FN() + +#define CTEST1(FN) \ + extern void link_failure_##FN (void); CPROTOTYPE1(FN) \ + if (signbit(FN(d1)) || signbitf(FN##f(f1)) || signbitl(FN##l(ld1))) \ + link_failure_##FN() + +#define ITEST1(FN) \ + extern void link_failure_##FN (void); IPROTOTYPE(FN) \ + if (signbit(FN(d1)) || signbitf(FN##l(f1)) || signbitl(FN##ll(ld1))) \ + link_failure_##FN() + + TEST1 (acos); + TEST1 (acosh); + CTEST1 (cabs); + TEST1 (cosh); + TEST1 (erfc); + TEST1 (exp); + TEST1 (exp10); + TEST1 (exp2); + TEST1 (fabs); + TEST2 (fdim); + TEST2 (hypot); + TEST1 (pow10); + TEST1 (sqrt); + ITEST1 (ffs); + ITEST1 (__builtin_parity); + ITEST1 (__builtin_popcount); + + /* These are nonnegative if the first argument is. */ +#define ARG1TEST1(FN) \ + extern void link_failure_##FN (void); PROTOTYPE(FN) \ + if (signbit(FN(fabs(d1))) || signbitf(FN##f(fabsf(f1))) \ + || signbitl(FN##l(fabsl(ld1)))) \ + link_failure_##FN() + + /* Same, but allow specifying the return type. */ +#define ARG1TEST1_RTYPE(FN,RTYPE) \ + extern void link_failure_##FN (void); PROTOTYPE_RTYPE(FN,RTYPE) \ + if (signbit(FN(fabs(d1))) || signbitf(FN##f(fabsf(f1))) \ + || signbitl(FN##l(fabsl(ld1)))) \ + link_failure_##FN() + + /* These are nonnegative if the first argument is. */ +#define ARG1TEST2(FN) \ + extern void link_failure_##FN (void); PROTOTYPE2(FN) \ + if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \ + || signbitl(FN##l(fabsl(ld1),ld2))) \ + link_failure_##FN() + + /* These are nonnegative if the second argument is. */ +#define ARG2TEST2(FN) \ + extern void link_failure_##FN (void); PROTOTYPE2(FN) \ + if (signbit(FN(d1,fabs(d2))) || signbitf(FN##f(f1,fabsf(f2))) \ + || signbitl(FN##l(ld1,fabsl(ld2)))) \ + link_failure_##FN() + + /* These are nonnegative if the first OR second argument is. */ +#define ARG2TESTor(FN) \ + extern void link_failure_##FN (void); PROTOTYPE2(FN) \ + if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \ + || signbitl(FN##l(fabsl(ld1),ld2)) || signbit(FN(d1,fabs(d2))) \ + || signbitf(FN##f(f1,fabsf(f2))) || signbitl(FN##l(ld1,fabsl(ld2)))) \ + link_failure_##FN() + + /* These are nonnegative if the first AND second argument is. */ +#define ARG2TESTand(FN) \ + extern void link_failure_##FN (void); PROTOTYPE2(FN) \ + if (signbit(FN(fabs(d1),fabs(d2))) || signbitf(FN##f(fabsf(f1),fabsf(f2))) \ + || signbitl(FN##l(fabsl(ld1),fabsl(ld2)))) \ + link_failure_##FN() + + /* These are nonnegative if the first argument is, 2nd arg is int. */ +#define ARG2TEST1_A2INT(FN) \ + extern void link_failure_##FN (void); PROTOTYPE2TYPE2(FN, int) \ + if (signbit(FN(fabs(d1),d2)) || signbitf(FN##f(fabsf(f1),f2)) \ + || signbitl(FN##l(fabsl(ld1),ld2))) \ + link_failure_##FN() + + /* These are nonnegative if the first argument is, specify 2nd arg. */ +#define ARG2TEST1_A2FPTR(FN) \ + extern void link_failure_##FN (void); PROTOTYPE2_A2FPTR(FN) \ + if (signbit(FN(fabs(d1),&d2)) || signbitf(FN##f(fabsf(f1),&f2)) \ + || signbitl(FN##l(fabsl(ld1),&ld2))) \ + link_failure_##FN() + + ARG1TEST1 (asinh); + ARG1TEST1 (atan); + ARG1TEST1 (atanh); + ARG1TEST1 (cbrt); + ARG1TEST1 (ceil); + ARG1TEST1 (erf); + ARG1TEST1 (expm1); + ARG1TEST1 (floor); + ARG1TEST2 (fmod); + ARG2TEST1_A2INT (ldexp); + ARG1TEST1_RTYPE (llrint, long long); + ARG1TEST1_RTYPE (llround, long long); + ARG1TEST1_RTYPE (lrint, long); + ARG1TEST1_RTYPE (lround, long); + /* The modf* functions aren't ever "const" or "pure" even with + -ffast-math so they won't be eliminated and yield a link failure. */ + /* ARG2TEST1_A2FPTR (modf);*/ + ARG1TEST1 (nearbyint); + ARG1TEST2 (pow); + ARG1TEST1 (rint); + ARG1TEST1 (round); + ARG1TEST1_RTYPE (signbit, int); + ARG1TEST1 (sinh); + ARG1TEST1 (tanh); + ARG1TEST1 (trunc); + + ARG2TESTor (fmax); + ARG2TESTand (fmin); + ARG2TEST2 (copysign); + +} + +int main (void) +{ + return 0; +}