Hi.
This patch includes implementation of fadd, faddl, daddl functions.
The patch boostraps on x86_64-linux-gnu and passes regression tests.
Thanks,
Tejas
gcc/ChangeLog:
2019-09-11 Tejas Joshi <tejasjoshi9...@gmail.com>
* builtin-types.def: Define narrowing function types.
* builtins.def: Define fadd variants builtin functions.
* fold-const-call.c (fold_const_narrow_binary): New. Folding calls
and conditions for standard arithmetic functions.
(fold_const_call): Add case for fadd variants.
gcc/testsuite/ChangeLog:
2019-09-11 Tejas Joshi <tejasjoshi9...@gmail.com>
* gcc.dg/builtin-fadd-1.c: New test.
* gcc.dg/builtin-fadd-2.c: New test.
* gcc.dg/builtin-fadd-3.c: New test.
* gcc.dg/builtin-fadd-4.c: New test.
* gcc.dg/builtin-fadd-5.c: New test.
* gcc.dg/builtin-fadd-6.c: New test.
diff --git a/gcc/builtin-types.def b/gcc/builtin-types.def
index e5c9e063c48..6bc552fa71a 100644
--- a/gcc/builtin-types.def
+++ b/gcc/builtin-types.def
@@ -387,8 +387,14 @@ DEF_FUNCTION_TYPE_2 (BT_FN_VOID_UINT_PTR,
BT_VOID, BT_UINT, BT_PTR)
DEF_FUNCTION_TYPE_2 (BT_FN_FLOAT_FLOAT_FLOAT,
BT_FLOAT, BT_FLOAT, BT_FLOAT)
+DEF_FUNCTION_TYPE_2 (BT_FN_FLOAT_DOUBLE_DOUBLE,
+ BT_FLOAT, BT_DOUBLE, BT_DOUBLE)
+DEF_FUNCTION_TYPE_2 (BT_FN_FLOAT_LONGDOUBLE_LONGDOUBLE,
+ BT_FLOAT, BT_LONGDOUBLE, BT_LONGDOUBLE)
DEF_FUNCTION_TYPE_2 (BT_FN_DOUBLE_DOUBLE_DOUBLE,
BT_DOUBLE, BT_DOUBLE, BT_DOUBLE)
+DEF_FUNCTION_TYPE_2 (BT_FN_DOUBLE_LONGDOUBLE_LONGDOUBLE,
+ BT_DOUBLE, BT_LONGDOUBLE, BT_LONGDOUBLE)
DEF_FUNCTION_TYPE_2 (BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE,
BT_LONGDOUBLE, BT_LONGDOUBLE, BT_LONGDOUBLE)
DEF_FUNCTION_TYPE_2 (BT_FN_FLOAT16_FLOAT16_FLOAT16,
diff --git a/gcc/builtins.def b/gcc/builtins.def
index 8bb7027aac7..2df616c477e 100644
--- a/gcc/builtins.def
+++ b/gcc/builtins.def
@@ -355,6 +355,9 @@ DEF_EXT_LIB_FLOATN_NX_BUILTINS (BUILT_IN_FABS, "fabs", FABS_TYPE, ATTR_CONST_NOT
DEF_GCC_BUILTIN (BUILT_IN_FABSD32, "fabsd32", BT_FN_DFLOAT32_DFLOAT32, ATTR_CONST_NOTHROW_LEAF_LIST)
DEF_GCC_BUILTIN (BUILT_IN_FABSD64, "fabsd64", BT_FN_DFLOAT64_DFLOAT64, ATTR_CONST_NOTHROW_LEAF_LIST)
DEF_GCC_BUILTIN (BUILT_IN_FABSD128, "fabsd128", BT_FN_DFLOAT128_DFLOAT128, ATTR_CONST_NOTHROW_LEAF_LIST)
+DEF_EXT_LIB_BUILTIN (BUILT_IN_FADD, "fadd", BT_FN_FLOAT_DOUBLE_DOUBLE, ATTR_CONST_NOTHROW_LEAF_LIST)
+DEF_EXT_LIB_BUILTIN (BUILT_IN_FADDL, "faddl", BT_FN_FLOAT_LONGDOUBLE_LONGDOUBLE, ATTR_CONST_NOTHROW_LEAF_LIST)
+DEF_EXT_LIB_BUILTIN (BUILT_IN_DADDL, "daddl", BT_FN_DOUBLE_LONGDOUBLE_LONGDOUBLE, ATTR_CONST_NOTHROW_LEAF_LIST)
DEF_C99_BUILTIN (BUILT_IN_FDIM, "fdim", BT_FN_DOUBLE_DOUBLE_DOUBLE, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_C99_BUILTIN (BUILT_IN_FDIMF, "fdimf", BT_FN_FLOAT_FLOAT_FLOAT, ATTR_MATHFN_FPROUNDING_ERRNO)
DEF_C99_BUILTIN (BUILT_IN_FDIML, "fdiml", BT_FN_LONGDOUBLE_LONGDOUBLE_LONGDOUBLE, ATTR_MATHFN_FPROUNDING_ERRNO)
diff --git a/gcc/fold-const-call.c b/gcc/fold-const-call.c
index 3a14d2a41c1..f6b4508a101 100644
--- a/gcc/fold-const-call.c
+++ b/gcc/fold-const-call.c
@@ -570,6 +570,44 @@ fold_const_nextafter (real_value *result, const real_value *arg0,
return true;
}
+/* Try to evaluate:
+
+ *RESULT = add (*ARG0, *ARG1)
+
+ in format FORMAT. Return true on success. */
+
+static bool
+fold_const_narrow_binary (real_value *result, const real_value *arg0,
+ int icode, const real_value *arg1,
+ const real_format *format)
+{
+ if (REAL_VALUE_ISSIGNALING_NAN (*arg0)
+ || REAL_VALUE_ISSIGNALING_NAN (*arg1))
+ return false;
+
+ real_arithmetic (result, icode, arg0, arg1);
+ /* Underflow condition. */
+ if (flag_errno_math
+ && result->cl == rvc_normal
+ && REAL_EXP (result) < format->emin)
+ return false;
+
+ if (!exact_real_truncate (format, result)
+ && (flag_rounding_math || flag_trapping_math))
+ return false;
+
+ real_convert (result, format, result);
+ /* Overflow condition. */
+ if (!real_isfinite (result) && flag_errno_math)
+ return false;
+
+ if (REAL_VALUE_ISNAN (*result)
+ && (flag_errno_math || flag_trapping_math))
+ return false;
+
+ return true;
+}
+
/* Try to evaluate:
*RESULT = ldexp (*ARG0, ARG1)
@@ -1674,6 +1712,25 @@ fold_const_call (combined_fn fn, tree type, tree arg0, tree arg1)
case CFN_FOLD_LEFT_PLUS:
return fold_const_fold_left (type, arg0, arg1, PLUS_EXPR);
+ case CFN_BUILT_IN_FADD:
+ case CFN_BUILT_IN_FADDL:
+ case CFN_BUILT_IN_DADDL:
+ {
+ if (real_cst_p (arg0)
+ && real_cst_p (arg1))
+ {
+ machine_mode arg0_mode = TYPE_MODE (TREE_TYPE (arg0));
+ gcc_checking_assert (SCALAR_FLOAT_MODE_P (arg0_mode));
+ REAL_VALUE_TYPE result;
+ machine_mode mode = TYPE_MODE (type);
+ if (fold_const_narrow_binary (&result, TREE_REAL_CST_PTR (arg0),
+ PLUS_EXPR, TREE_REAL_CST_PTR (arg1),
+ REAL_MODE_FORMAT (mode)))
+ return build_real (type, result);
+ }
+ }
+ return NULL_TREE;
+
default:
return fold_const_call_1 (fn, type, arg0, arg1);
}
diff --git a/gcc/testsuite/gcc.dg/builtin-fadd-1.c b/gcc/testsuite/gcc.dg/builtin-fadd-1.c
new file mode 100644
index 00000000000..66280e9f72b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-fadd-1.c
@@ -0,0 +1,54 @@
+/* { dg-do link } */
+/* { dg-options "-O2 -fno-trapping-math" } */
+
+extern int link_error (int);
+
+#define TEST(FN, VAL1, VAL2, RESULT) \
+ if (__builtin_##FN (VAL1, VAL2) != RESULT) link_error (__LINE__);
+
+int
+main (void)
+{
+ TEST(fadd, 0, 0, 0.0F);
+ TEST(fadd, 1, -1, 0.0F);
+ TEST(fadd, -1, -1.5, -2.5F);
+ TEST(fadd, 1.4, 1.6, 3.0F);
+ TEST(fadd, 2.5, 1.5, 4.0F);
+
+ TEST(fadd, 1, 1.1, 2.1F);
+ TEST(fadd, 2, 4.3, 6.3F);
+ TEST(fadd, -3, -3.6, -6.6F);
+ TEST(fadd, 8, 0.8, 8.8F);
+
+ if (__builtin_fadd (0x1.000001p0, __FLT_MIN__)
+ == (float) (0x1.000001p0 + __FLT_MIN__))
+ link_error (__LINE__);
+
+ TEST(faddl, 0.0L, 0.0L, 0.0F);
+ TEST(faddl, 1.0L, -1.0L, 0.0F);
+ TEST(faddl, -1.0L, -1.5L, -2.5F);
+ TEST(faddl, 1.4L, 1.6L, 3.0F);
+ TEST(faddl, 2.5L, 1.5L, 4.0F);
+
+ TEST(faddl, 1.0L, 1.1L, 2.1F);
+ TEST(faddl, 2.0L, 4.3L, 6.3F);
+ TEST(faddl, -3.0L, -3.6L, -6.6F);
+ TEST(faddl, 8.0L, 0.8L, 8.8F);
+
+ if (__builtin_faddl (0x1.000001p0, __FLT_MIN__)
+ == (float) (0x1.000001p0 + __FLT_MIN__))
+ link_error (__LINE__);
+
+ TEST(daddl, 0L, 0L, 0.0);
+ TEST(daddl, 1.0L, -1.0L, 0.0);
+ TEST(daddl, -1.0L, -1.5L, -2.5);
+ TEST(daddl, 1.4L, 1.6L, 3.0);
+ TEST(daddl, 2.5L, 1.5L, 4.0);
+
+ TEST(daddl, 1.0L, 1.1L, 2.1);
+ TEST(daddl, 2.0L, 4.3L, 6.3);
+ TEST(daddl, -3.0L, -3.6L, -6.6);
+ TEST(daddl, 8.0L, 0.8L, 8.8);
+
+ return 0;
+}
diff --git a/gcc/testsuite/gcc.dg/builtin-fadd-2.c b/gcc/testsuite/gcc.dg/builtin-fadd-2.c
new file mode 100644
index 00000000000..006f1c6d21b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-fadd-2.c
@@ -0,0 +1,29 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump "fadd" "optimized" } } */
+/* { dg-final { scan-tree-dump "faddl" "optimized" } } */
+/* { dg-final { scan-tree-dump "daddl" "optimized" } } */
+
+#define TEST(FN, VAL1, VAL2, RESULT) \
+ if (__builtin_##FN (VAL1, VAL2) != RESULT) __builtin_abort ();
+
+int
+main (void)
+{
+ TEST(fadd, 1, 1.1, 2.1F);
+ TEST(fadd, 2, 4.3, 6.3F);
+ TEST(fadd, -3, -3.6, -6.6F);
+ TEST(fadd, 8, 0.8, 8.8F);
+
+ TEST(faddl, 1.0L, 1.1L, 2.1F);
+ TEST(faddl, 2.0L, 4.3L, 6.3F);
+ TEST(faddl, -3.0L, -3.6L, -6.6F);
+ TEST(faddl, 8.0L, 0.8L, 8.8F);
+
+ TEST(daddl, 1.0L, 1.1L, 2.1);
+ TEST(daddl, 2.0L, 4.3L, 6.3);
+ TEST(daddl, -3.0L, -3.6L, -6.6);
+ TEST(daddl, 8.0L, 0.8L, 8.8);
+
+ return 0;
+}
diff --git a/gcc/testsuite/gcc.dg/builtin-fadd-3.c b/gcc/testsuite/gcc.dg/builtin-fadd-3.c
new file mode 100644
index 00000000000..dd8a2040cb7
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-fadd-3.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-trapping-math -frounding-math -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump "fadd" "optimized" } } */
+/* { dg-final { scan-tree-dump "faddl" "optimized" } } */
+/* { dg-final { scan-tree-dump "daddl" "optimized" } } */
+
+#define TEST(FN, VAL1, VAL2, RESULT) \
+ if (__builtin_##FN (VAL1, VAL2) != RESULT) __builtin_abort ();
+
+#include "builtin-fadd-2.c"
diff --git a/gcc/testsuite/gcc.dg/builtin-fadd-4.c b/gcc/testsuite/gcc.dg/builtin-fadd-4.c
new file mode 100644
index 00000000000..9091be49b9b
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-fadd-4.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -frounding-math -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump "fadd" "optimized" } } */
+/* { dg-final { scan-tree-dump "faddl" "optimized" } } */
+/* { dg-final { scan-tree-dump "daddl" "optimized" } } */
+
+#define TEST(FN, VAL1, VAL2, RESULT) \
+ if (__builtin_##FN (VAL1, VAL2) != RESULT) __builtin_abort ();
+
+#include "builtin-fadd-2.c"
diff --git a/gcc/testsuite/gcc.dg/builtin-fadd-5.c b/gcc/testsuite/gcc.dg/builtin-fadd-5.c
new file mode 100644
index 00000000000..ac3b547724c
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-fadd-5.c
@@ -0,0 +1,26 @@
+/* { dg-do link } */
+/* { dg-options "-O2 -fno-trapping-math -fno-math-errno" } */
+
+extern int link_error (int);
+
+#define TEST(FN, VAL1, VAL2, RESULT) \
+ if (__builtin_##FN (VAL1, VAL2) != RESULT) link_error (__LINE__);
+
+int
+main (void)
+{
+ TEST(fadd, __DBL_MAX__, __DBL_MAX__, __builtin_inff());
+ TEST(fadd, __FLT_MAX__, __FLT_MAX__, __builtin_inff());
+ TEST(fadd, __DBL_MIN__, __DBL_MIN__, 0.0);
+
+ TEST(faddl, __LDBL_MAX__, __LDBL_MAX__, __builtin_inff());
+ TEST(faddl, __FLT_MAX__, __FLT_MAX__, __builtin_inff());
+ TEST(faddl, __LDBL_MIN__, __LDBL_MIN__, 0.0);
+
+ TEST(daddl, __LDBL_MAX__, __LDBL_MAX__, __builtin_inf());
+ TEST(daddl, __DBL_MAX__, __DBL_MAX__, __builtin_inf());
+ TEST(daddl, __LDBL_MIN__, __LDBL_MIN__, 0.0);
+
+ return 0;
+}
+
diff --git a/gcc/testsuite/gcc.dg/builtin-fadd-6.c b/gcc/testsuite/gcc.dg/builtin-fadd-6.c
new file mode 100644
index 00000000000..11c63f06463
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/builtin-fadd-6.c
@@ -0,0 +1,27 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fno-trapping-math -fdump-tree-optimized" } */
+/* { dg-final { scan-tree-dump "fadd" "optimized" } } */
+/* { dg-final { scan-tree-dump "faddl" "optimized" } } */
+/* { dg-final { scan-tree-dump "daddl" "optimized" } } */
+
+#define TEST(FN, VAL1, VAL2, RESULT) \
+ if (__builtin_##FN (VAL1, VAL2) != RESULT) __builtin_abort ();
+
+int
+main (void)
+{
+ TEST(fadd, __DBL_MAX__, __DBL_MAX__, __builtin_inff());
+ TEST(fadd, __FLT_MAX__, __FLT_MAX__, __builtin_inff());
+ TEST(fadd, __DBL_MIN__, __DBL_MIN__, 0.0);
+
+ TEST(faddl, __LDBL_MAX__, __LDBL_MAX__, __builtin_inff());
+ TEST(faddl, __FLT_MAX__, __FLT_MAX__, __builtin_inff());
+ TEST(faddl, __LDBL_MIN__, __LDBL_MIN__, 0.0);
+
+ TEST(daddl, __LDBL_MAX__, __LDBL_MAX__, __builtin_inf());
+ TEST(daddl, __DBL_MAX__, __DBL_MAX__, __builtin_inf());
+ TEST(daddl, __LDBL_MIN__, __LDBL_MIN__, 0.0);
+
+ return 0;
+}
+
