+2019-08-19 Joel Hutton <Joel.Hutton@arm.com>
+
+ * config/aarch64/aarch64-protos.h (aarch64_fpconst_pow2_recip): New prototype
+ * config/aarch64/aarch64.c (aarch64_fpconst_pow2_recip): New function
+ * config/aarch64/aarch64.md (*aarch64_<su_optab>cvtf<fcvt_target><GPF:mode>2_mult): New pattern
+ (*aarch64_<su_optab>cvtf<fcvt_iesize><GPF:mode>2_mult): New pattern
+ * config/aarch64/constraints.md (Dt): New constraint
+ * config/aarch64/predicates.md (aarch64_fpconst_pow2_recip): New predicate
+
2019-08-19 Richard Biener <rguenther@suse.de>
PR tree-optimization/91403
enum reg_class aarch64_regno_regclass (unsigned);
int aarch64_asm_preferred_eh_data_format (int, int);
int aarch64_fpconst_pow_of_2 (rtx);
+int aarch64_fpconst_pow2_recip (rtx);
machine_mode aarch64_hard_regno_caller_save_mode (unsigned, unsigned,
machine_mode);
int aarch64_uxt_size (int, HOST_WIDE_INT);
return exact_log2 (real_to_integer (r));
}
+/* If X is a positive CONST_DOUBLE with a value that is the reciprocal of a
+ power of 2 (i.e 1/2^n) return the number of float bits. e.g. for x==(1/2^n)
+ return n. Otherwise return -1. */
+
+int
+aarch64_fpconst_pow2_recip (rtx x)
+{
+ REAL_VALUE_TYPE r0;
+
+ if (!CONST_DOUBLE_P (x))
+ return -1;
+
+ r0 = *CONST_DOUBLE_REAL_VALUE (x);
+ if (exact_real_inverse (DFmode, &r0)
+ && !REAL_VALUE_NEGATIVE (r0))
+ {
+ int ret = exact_log2 (real_to_integer (&r0));
+ if (ret >= 1 && ret <= 32)
+ return ret;
+ }
+ return -1;
+}
+
/* If X is a vector of equal CONST_DOUBLE values and that value is
Y, return the aarch64_fpconst_pow_of_2 of Y. Otherwise return -1. */
[(set_attr "type" "f_cvtf2i")]
)
+;; Equal width integer to fp and multiply combine.
+(define_insn "*aarch64_<su_optab>cvtf<fcvt_target><GPF:mode>2_mult"
+ [(set (match_operand:GPF 0 "register_operand" "=w,w")
+ (mult:GPF (FLOATUORS:GPF
+ (match_operand:<FCVT_TARGET> 1 "register_operand" "w,?r"))
+ (match_operand:GPF 2 "aarch64_fp_pow2_recip" "Dt,Dt")))]
+ "TARGET_FLOAT"
+ {
+ operands[2] = GEN_INT (aarch64_fpconst_pow2_recip (operands[2]));
+ switch (which_alternative)
+ {
+ case 0:
+ return "<su_optab>cvtf\t%<GPF:s>0, %<s>1, #%2";
+ case 1:
+ return "<su_optab>cvtf\t%<GPF:s>0, %<w1>1, #%2";
+ default:
+ gcc_unreachable ();
+ }
+ }
+ [(set_attr "type" "neon_int_to_fp_<Vetype>,f_cvti2f")
+ (set_attr "arch" "simd,fp")]
+)
+
+;; Unequal width integer to fp and multiply combine.
+(define_insn "*aarch64_<su_optab>cvtf<fcvt_iesize><GPF:mode>2_mult"
+ [(set (match_operand:GPF 0 "register_operand" "=w")
+ (mult:GPF (FLOATUORS:GPF
+ (match_operand:<FCVT_IESIZE> 1 "register_operand" "r"))
+ (match_operand:GPF 2 "aarch64_fp_pow2_recip" "Dt")))]
+ "TARGET_FLOAT"
+ {
+ operands[2] = GEN_INT (aarch64_fpconst_pow2_recip (operands[2]));
+ return "<su_optab>cvtf\t%<GPF:s>0, %<w2>1, #%2";
+ }
+ [(set_attr "type" "f_cvti2f")]
+)
+
+;; Equal width integer to fp conversion.
(define_insn "<optab><fcvt_target><GPF:mode>2"
[(set (match_operand:GPF 0 "register_operand" "=w,w")
(FLOATUORS:GPF (match_operand:<FCVT_TARGET> 1 "register_operand" "w,?r")))]
(set_attr "arch" "simd,fp")]
)
+;; Unequal width integer to fp conversions.
(define_insn "<optab><fcvt_iesize><GPF:mode>2"
[(set (match_operand:GPF 0 "register_operand" "=w")
(FLOATUORS:GPF (match_operand:<FCVT_IESIZE> 1 "register_operand" "r")))]
(match_test "aarch64_simd_scalar_immediate_valid_for_move (op,
QImode)")))
+(define_constraint "Dt"
+ "@internal
+ A const_double which is the reciprocal of an exact power of two, can be
+ used in an scvtf with fract bits operation"
+ (and (match_code "const_double")
+ (match_test "aarch64_fpconst_pow2_recip (op) > 0")))
+
(define_constraint "Dl"
"@internal
A constraint that matches vector of immediates for left shifts."
(and (match_code "const_double")
(match_test "aarch64_fpconst_pow_of_2 (op) > 0")))
+(define_predicate "aarch64_fp_pow2_recip"
+ (and (match_code "const_double")
+ (match_test "aarch64_fpconst_pow2_recip (op) > 0")))
+
(define_predicate "aarch64_fp_vec_pow2"
(match_test "aarch64_vec_fpconst_pow_of_2 (op) > 0"))
+2019-08-19 Joel Hutton <Joel.Hutton@arm.com>
+
+ * gcc.target/aarch64/fmul_scvtf_1.c: New test.
+
2019-08-19 Marek Polacek <polacek@redhat.com>
PR c++/91264 - detect modifying const objects in constexpr.
--- /dev/null
+/* { dg-do run } */
+/* { dg-options "-save-temps -O2 -fno-inline" } */
+
+#define FUNC_DEFS(__a) \
+float \
+fsfoo##__a (int x) \
+{ \
+ return ((float) x)/(1lu << __a); \
+} \
+float \
+fusfoo##__a (unsigned int x) \
+{ \
+ return ((float) x)/(1lu << __a); \
+} \
+float \
+fslfoo##__a (long long x) \
+{ \
+ return ((float) x)/(1lu << __a); \
+} \
+float \
+fulfoo##__a (unsigned long long x) \
+{ \
+ return ((float) x)/(1lu << __a); \
+} \
+
+#define FUNC_DEFD(__a) \
+double \
+dsfoo##__a (int x) \
+{ \
+ return ((double) x)/(1lu << __a); \
+} \
+double \
+dusfoo##__a (unsigned int x) \
+{ \
+ return ((double) x)/(1lu << __a); \
+} \
+double \
+dslfoo##__a (long long x) \
+{ \
+ return ((double) x)/(1lu << __a); \
+} \
+double \
+dulfoo##__a (unsigned long long x) \
+{ \
+ return ((double) x)/(1lu << __a); \
+}
+
+FUNC_DEFS (4)
+ /* { dg-final { scan-assembler-times "scvtf\ts\[0-9\], w\[0-9\]*.*#4" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\ts\[0-9\], w\[0-9\]*.*#4" 1 } } */
+ /* { dg-final { scan-assembler-times "scvtf\ts\[0-9\], x\[0-9\]*.*#4" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\ts\[0-9\], x\[0-9\]*.*#4" 1 } } */
+
+FUNC_DEFD (4)
+ /* { dg-final { scan-assembler-times "scvtf\td\[0-9\], w\[0-9\]*.*#4" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\td\[0-9\], w\[0-9\]*.*#4" 1 } } */
+ /* { dg-final { scan-assembler-times "scvtf\td\[0-9\], x\[0-9\]*.*#4" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\td\[0-9\], x\[0-9\]*.*#4" 1 } } */
+
+FUNC_DEFS (8)
+ /* { dg-final { scan-assembler-times "scvtf\ts\[0-9\], w\[0-9\]*.*#8" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\ts\[0-9\], w\[0-9\]*.*#8" 1 } } */
+ /* { dg-final { scan-assembler-times "scvtf\ts\[0-9\], x\[0-9\]*.*#8" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\ts\[0-9\], x\[0-9\]*.*#8" 1 } } */
+
+FUNC_DEFD (8)
+ /* { dg-final { scan-assembler-times "scvtf\td\[0-9\], w\[0-9\]*.*#8" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\td\[0-9\], w\[0-9\]*.*#8" 1 } } */
+ /* { dg-final { scan-assembler-times "scvtf\td\[0-9\], x\[0-9\]*.*#8" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\td\[0-9\], x\[0-9\]*.*#8" 1 } } */
+
+FUNC_DEFS (16)
+ /* { dg-final { scan-assembler-times "scvtf\ts\[0-9\], w\[0-9\]*.*#16" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\ts\[0-9\], w\[0-9\]*.*#16" 1 } } */
+ /* { dg-final { scan-assembler-times "scvtf\ts\[0-9\], x\[0-9\]*.*#16" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\ts\[0-9\], x\[0-9\]*.*#16" 1 } } */
+
+FUNC_DEFD (16)
+ /* { dg-final { scan-assembler-times "scvtf\td\[0-9\], w\[0-9\]*.*#16" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\td\[0-9\], w\[0-9\]*.*#16" 1 } } */
+ /* { dg-final { scan-assembler-times "scvtf\td\[0-9\], x\[0-9\]*.*#16" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\td\[0-9\], x\[0-9\]*.*#16" 1 } } */
+
+FUNC_DEFS (32)
+ /* { dg-final { scan-assembler-times "scvtf\ts\[0-9\], w\[0-9\]*.*#32" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\ts\[0-9\], w\[0-9\]*.*#32" 1 } } */
+ /* { dg-final { scan-assembler-times "scvtf\ts\[0-9\], x\[0-9\]*.*#32" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\ts\[0-9\], x\[0-9\]*.*#32" 1 } } */
+
+FUNC_DEFD (32)
+ /* { dg-final { scan-assembler-times "scvtf\td\[0-9\], w\[0-9\]*.*#32" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\td\[0-9\], w\[0-9\]*.*#32" 1 } } */
+ /* { dg-final { scan-assembler-times "scvtf\td\[0-9\], x\[0-9\]*.*#32" 1 } } */
+ /* { dg-final { scan-assembler-times "ucvtf\td\[0-9\], x\[0-9\]*.*#32" 1 } } */
+
+#define FUNC_TESTS(__a, __b) \
+do \
+{ \
+ if (fsfoo##__a (__b) != ((int) i) * (1.0f/(1lu << __a)) ) \
+ __builtin_abort (); \
+ if (fusfoo##__a (__b) != ((int) i) * (1.0f/(1lu << __a)) ) \
+ __builtin_abort (); \
+ if (fslfoo##__a (__b) != ((int) i) * (1.0f/(1lu << __a)) ) \
+ __builtin_abort (); \
+ if (fulfoo##__a (__b) != ((int) i) * (1.0f/(1lu << __a)) ) \
+ __builtin_abort (); \
+} while (0)
+
+#define FUNC_TESTD(__a, __b) \
+do \
+{ \
+ if (dsfoo##__a (__b) != ((int) i) * (1.0d/(1lu << __a)) ) \
+ __builtin_abort (); \
+ if (dusfoo##__a (__b) != ((int) i) * (1.0d/(1lu << __a)) ) \
+ __builtin_abort (); \
+ if (dslfoo##__a (__b) != ((int) i) * (1.0d/(1lu << __a)) ) \
+ __builtin_abort (); \
+ if (dulfoo##__a (__b) != ((int) i) * (1.0d/(1lu << __a)) ) \
+ __builtin_abort (); \
+} while (0)
+
+int
+main (void)
+{
+ int i;
+
+ for (i = 0; i < 32; i ++)
+ {
+ FUNC_TESTS (4, i);
+ FUNC_TESTS (8, i);
+ FUNC_TESTS (16, i);
+ FUNC_TESTS (32, i);
+
+ FUNC_TESTD (4, i);
+ FUNC_TESTD (8, i);
+ FUNC_TESTD (16, i);
+ FUNC_TESTD (32, i);
+ }
+ return 0;
+}
projects / gcc.git / commitdiff