From: Jakub Jelinek Date: Tue, 19 Mar 2019 07:25:59 +0000 (+0100) Subject: re PR target/89726 (Incorrect inlined version of 'ceil' for 32bit) X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=ce2c025c2480b6d36eb25b3aae877141ab4c3a5d;p=gcc.git re PR target/89726 (Incorrect inlined version of 'ceil' for 32bit) PR target/89726 * config/i386/i386.c (ix86_expand_floorceildf_32): In ceil compensation use x2 += 1 instead of x2 -= -1 and when honoring signed zeros, do another copysign after the compensation. * gcc.target/i386/fpprec-1.c (x): Add 6 new constants. (expect_round, expect_rint, expect_floor, expect_ceil, expect_trunc): Add expected results for them. From-SVN: r269790 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e0df9e02d7c..568435819d7 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2019-03-19 Jakub Jelinek + + PR target/89726 + * config/i386/i386.c (ix86_expand_floorceildf_32): In ceil + compensation use x2 += 1 instead of x2 -= -1 and when honoring + signed zeros, do another copysign after the compensation. + 2019-03-18 Martin Sebor PR tree-optimization/89720 diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 560170f56db..184c5c18718 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -45563,8 +45563,10 @@ ix86_expand_floorceildf_32 (rtx operand0, rtx operand1, bool do_floor) x2 -= 1; Compensate. Ceil: if (x2 < x) - x2 -= -1; - return x2; + x2 += 1; + if (HONOR_SIGNED_ZEROS (mode)) + x2 = copysign (x2, x); + return x2; */ machine_mode mode = GET_MODE (operand0); rtx xa, TWO52, tmp, one, res, mask; @@ -45590,17 +45592,16 @@ ix86_expand_floorceildf_32 (rtx operand0, rtx operand1, bool do_floor) /* xa = copysign (xa, operand1) */ ix86_sse_copysign_to_positive (xa, xa, res, mask); - /* generate 1.0 or -1.0 */ - one = force_reg (mode, - const_double_from_real_value (do_floor - ? dconst1 : dconstm1, mode)); + /* generate 1.0 */ + one = force_reg (mode, const_double_from_real_value (dconst1, mode)); /* Compensate: xa = xa - (xa > operand1 ? 1 : 0) */ tmp = ix86_expand_sse_compare_mask (UNGT, xa, res, !do_floor); emit_insn (gen_rtx_SET (tmp, gen_rtx_AND (mode, one, tmp))); - /* We always need to subtract here to preserve signed zero. */ - tmp = expand_simple_binop (mode, MINUS, + tmp = expand_simple_binop (mode, do_floor ? MINUS : PLUS, xa, tmp, NULL_RTX, 0, OPTAB_DIRECT); + if (!do_floor && HONOR_SIGNED_ZEROS (mode)) + ix86_sse_copysign_to_positive (tmp, tmp, res, mask); emit_move_insn (res, tmp); emit_label (label); diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 308753e3046..ae077a1fc8e 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2019-03-19 Jakub Jelinek + PR target/89726 + * gcc.target/i386/fpprec-1.c (x): Add 6 new constants. + (expect_round, expect_rint, expect_floor, expect_ceil, expect_trunc): + Add expected results for them. + PR c/89734 * gcc.dg/pr89734.c: New test. diff --git a/gcc/testsuite/gcc.target/i386/fpprec-1.c b/gcc/testsuite/gcc.target/i386/fpprec-1.c index 1c17c1d10a0..4e55a225bb8 100644 --- a/gcc/testsuite/gcc.target/i386/fpprec-1.c +++ b/gcc/testsuite/gcc.target/i386/fpprec-1.c @@ -11,6 +11,9 @@ double x[] = { __builtin_nan(""), __builtin_inf(), -__builtin_inf(), 0x1.0000000000001p-1, 0x1.fffffffffffffp-2, 0x1.0000000000001p+0, 0x1.fffffffffffffp-1, 0x1.8000000000001p+0, 0x1.7ffffffffffffp+0, + -0x1.0000000000001p-1, -0x1.fffffffffffffp-2, + -0x1.0000000000001p+0, -0x1.fffffffffffffp-1, + -0x1.8000000000001p+0, -0x1.7ffffffffffffp+0, -0.0, 0.0, -0.5, 0.5, -1.0, 1.0, -1.5, 1.5, -2.0, 2.0, -2.5, 2.5 }; #define NUM (sizeof(x)/sizeof(double)) @@ -19,6 +22,7 @@ double expect_round[] = { __builtin_nan(""), __builtin_inf(), -__builtin_inf(), -0x1.fffffffffffffp+1023, 0x1.fffffffffffffp+1023, -0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 2.0, 1.0, + -1.0, -0.0, -1.0, -1.0, -2.0, -1.0, -0.0, 0.0, -1.0, 1.0, -1.0, 1.0, -2.0, 2.0, -2.0, 2.0, -3.0, 3.0 }; @@ -26,6 +30,7 @@ double expect_rint[] = { __builtin_nan(""), __builtin_inf(), -__builtin_inf(), -0x1.fffffffffffffp+1023, 0x1.fffffffffffffp+1023, -0.0, 0.0, 1.0, 0.0, 1.0, 1.0, 2.0, 1.0, + -1.0, -0.0, -1.0, -1.0, -2.0, -1.0, -0.0, 0.0, -0.0, 0.0, -1.0, 1.0, -2.0, 2.0, -2.0, 2.0, -2.0, 2.0 }; @@ -33,6 +38,7 @@ double expect_floor[] = { __builtin_nan(""), __builtin_inf(), -__builtin_inf(), -0x1.fffffffffffffp+1023, 0x1.fffffffffffffp+1023, -1.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, + -1.0, -1.0, -2.0, -1.0, -2.0, -2.0, -0.0, 0.0, -1.0, 0.0, -1.0, 1.0, -2.0, 1.0, -2.0, 2.0, -3.0, 2.0 }; @@ -40,6 +46,7 @@ double expect_ceil[] = { __builtin_nan(""), __builtin_inf(), -__builtin_inf(), -0x1.fffffffffffffp+1023, 0x1.fffffffffffffp+1023, -0.0, 1.0, 1.0, 1.0, 2.0, 1.0, 2.0, 2.0, + -0.0, -0.0, -1.0, -0.0, -1.0, -1.0, -0.0, 0.0, -0.0, 1.0, -1.0, 1.0, -1.0, 2.0, -2.0, 2.0, -2.0, 3.0 }; @@ -47,6 +54,7 @@ double expect_trunc[] = { __builtin_nan(""), __builtin_inf(), -__builtin_inf(), -0x1.fffffffffffffp+1023, 0x1.fffffffffffffp+1023, -0.0, 0.0, 0.0, 0.0, 1.0, 0.0, 1.0, 1.0, + -0.0, -0.0, -1.0, -0.0, -1.0, -1.0, -0.0, 0.0, -0.0, 0.0, -1.0, 1.0, -1.0, 1.0, -2.0, 2.0, -2.0, 2.0 };