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GET /api/patches/1475766/?format=api
{ "id": 1475766, "url": "http://patchwork.ozlabs.org/api/patches/1475766/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20210508014802.892561-52-richard.henderson@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20210508014802.892561-52-richard.henderson@linaro.org>", "list_archive_url": null, "date": "2021-05-08T01:47:41", "name": "[51/72] softfloat: Move compare_floats to softfloat-parts.c.inc", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "f473f899b17566c8fc79ad84dff683e93601fea7", "submitter": { "id": 72104, "url": "http://patchwork.ozlabs.org/api/people/72104/?format=api", "name": "Richard Henderson", "email": "richard.henderson@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20210508014802.892561-52-richard.henderson@linaro.org/mbox/", "series": [ { "id": 242770, "url": "http://patchwork.ozlabs.org/api/series/242770/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=242770", "date": "2021-05-08T01:46:53", "name": "Convert floatx80 and float128 to FloatParts", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/242770/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/1475766/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/1475766/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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helo=mail-pg1-x52b.google.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.23", "Precedence": "list", "List-Id": "<qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Cc": "alex.bennee@linaro.org, david@redhat.com", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "\"Qemu-devel\"\n <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>" }, "content": "Rename to parts$N_compare. Rename all of the intermediate\nfunctions to ftype_do_compare. Rename the hard-float functions\nto ftype_hs_compare. Convert float128 to FloatParts128.\n\nSigned-off-by: Richard Henderson <richard.henderson@linaro.org>\n---\n fpu/softfloat.c | 208 ++++++++++++++------------------------\n fpu/softfloat-parts.c.inc | 57 +++++++++++\n 2 files changed, 133 insertions(+), 132 deletions(-)", "diff": "diff --git a/fpu/softfloat.c b/fpu/softfloat.c\nindex 4c04e88a3a..2faceadf8b 100644\n--- a/fpu/softfloat.c\n+++ b/fpu/softfloat.c\n@@ -881,6 +881,14 @@ static int parts128_minmax(FloatParts128 *a, FloatParts128 *b,\n #define parts_minmax(A, B, S, Z, F) \\\n PARTS_GENERIC_64_128(minmax, A)(A, B, S, Z, F)\n \n+static int parts64_compare(FloatParts64 *a, FloatParts64 *b,\n+ float_status *s, bool q);\n+static int parts128_compare(FloatParts128 *a, FloatParts128 *b,\n+ float_status *s, bool q);\n+\n+#define parts_compare(A, B, S, Q) \\\n+ PARTS_GENERIC_64_128(compare, A)(A, B, S, Q)\n+\n /*\n * Helper functions for softfloat-parts.c.inc, per-size operations.\n */\n@@ -3359,92 +3367,42 @@ MINMAX_2(float64)\n #undef MINMAX_1\n #undef MINMAX_2\n \n-/* Floating point compare */\n-static FloatRelation compare_floats(FloatParts64 a, FloatParts64 b, bool is_quiet,\n- float_status *s)\n+/*\n+ * Floating point compare\n+ */\n+\n+static FloatRelation QEMU_FLATTEN\n+float16_do_compare(float16 a, float16 b, float_status *s, bool is_quiet)\n {\n- if (is_nan(a.cls) || is_nan(b.cls)) {\n- if (!is_quiet ||\n- a.cls == float_class_snan ||\n- b.cls == float_class_snan) {\n- float_raise(float_flag_invalid, s);\n- }\n- return float_relation_unordered;\n- }\n+ FloatParts64 pa, pb;\n \n- if (a.cls == float_class_zero) {\n- if (b.cls == float_class_zero) {\n- return float_relation_equal;\n- }\n- return b.sign ? float_relation_greater : float_relation_less;\n- } else if (b.cls == float_class_zero) {\n- return a.sign ? float_relation_less : float_relation_greater;\n- }\n-\n- /* The only really important thing about infinity is its sign. If\n- * both are infinities the sign marks the smallest of the two.\n- */\n- if (a.cls == float_class_inf) {\n- if ((b.cls == float_class_inf) && (a.sign == b.sign)) {\n- return float_relation_equal;\n- }\n- return a.sign ? float_relation_less : float_relation_greater;\n- } else if (b.cls == float_class_inf) {\n- return b.sign ? float_relation_greater : float_relation_less;\n- }\n-\n- if (a.sign != b.sign) {\n- return a.sign ? float_relation_less : float_relation_greater;\n- }\n-\n- if (a.exp == b.exp) {\n- if (a.frac == b.frac) {\n- return float_relation_equal;\n- }\n- if (a.sign) {\n- return a.frac > b.frac ?\n- float_relation_less : float_relation_greater;\n- } else {\n- return a.frac > b.frac ?\n- float_relation_greater : float_relation_less;\n- }\n- } else {\n- if (a.sign) {\n- return a.exp > b.exp ? float_relation_less : float_relation_greater;\n- } else {\n- return a.exp > b.exp ? float_relation_greater : float_relation_less;\n- }\n- }\n+ float16_unpack_canonical(&pa, a, s);\n+ float16_unpack_canonical(&pb, b, s);\n+ return parts_compare(&pa, &pb, s, is_quiet);\n }\n \n-#define COMPARE(name, attr, sz) \\\n-static int attr \\\n-name(float ## sz a, float ## sz b, bool is_quiet, float_status *s) \\\n-{ \\\n- FloatParts64 pa, pb; \\\n- float ## sz ## _unpack_canonical(&pa, a, s); \\\n- float ## sz ## _unpack_canonical(&pb, b, s); \\\n- return compare_floats(pa, pb, is_quiet, s); \\\n-}\n-\n-COMPARE(soft_f16_compare, QEMU_FLATTEN, 16)\n-COMPARE(soft_f32_compare, QEMU_SOFTFLOAT_ATTR, 32)\n-COMPARE(soft_f64_compare, QEMU_SOFTFLOAT_ATTR, 64)\n-\n-#undef COMPARE\n-\n FloatRelation float16_compare(float16 a, float16 b, float_status *s)\n {\n- return soft_f16_compare(a, b, false, s);\n+ return float16_do_compare(a, b, s, false);\n }\n \n FloatRelation float16_compare_quiet(float16 a, float16 b, float_status *s)\n {\n- return soft_f16_compare(a, b, true, s);\n+ return float16_do_compare(a, b, s, true);\n+}\n+\n+static FloatRelation QEMU_SOFTFLOAT_ATTR\n+float32_do_compare(float32 a, float32 b, float_status *s, bool is_quiet)\n+{\n+ FloatParts64 pa, pb;\n+\n+ float32_unpack_canonical(&pa, a, s);\n+ float32_unpack_canonical(&pb, b, s);\n+ return parts_compare(&pa, &pb, s, is_quiet);\n }\n \n static FloatRelation QEMU_FLATTEN\n-f32_compare(float32 xa, float32 xb, bool is_quiet, float_status *s)\n+float32_hs_compare(float32 xa, float32 xb, float_status *s, bool is_quiet)\n {\n union_float32 ua, ub;\n \n@@ -3465,25 +3423,36 @@ f32_compare(float32 xa, float32 xb, bool is_quiet, float_status *s)\n if (likely(isless(ua.h, ub.h))) {\n return float_relation_less;\n }\n- /* The only condition remaining is unordered.\n+ /*\n+ * The only condition remaining is unordered.\n * Fall through to set flags.\n */\n soft:\n- return soft_f32_compare(ua.s, ub.s, is_quiet, s);\n+ return float32_do_compare(ua.s, ub.s, s, is_quiet);\n }\n \n FloatRelation float32_compare(float32 a, float32 b, float_status *s)\n {\n- return f32_compare(a, b, false, s);\n+ return float32_hs_compare(a, b, s, false);\n }\n \n FloatRelation float32_compare_quiet(float32 a, float32 b, float_status *s)\n {\n- return f32_compare(a, b, true, s);\n+ return float32_hs_compare(a, b, s, true);\n+}\n+\n+static FloatRelation QEMU_SOFTFLOAT_ATTR\n+float64_do_compare(float64 a, float64 b, float_status *s, bool is_quiet)\n+{\n+ FloatParts64 pa, pb;\n+\n+ float64_unpack_canonical(&pa, a, s);\n+ float64_unpack_canonical(&pb, b, s);\n+ return parts_compare(&pa, &pb, s, is_quiet);\n }\n \n static FloatRelation QEMU_FLATTEN\n-f64_compare(float64 xa, float64 xb, bool is_quiet, float_status *s)\n+float64_hs_compare(float64 xa, float64 xb, float_status *s, bool is_quiet)\n {\n union_float64 ua, ub;\n \n@@ -3504,41 +3473,62 @@ f64_compare(float64 xa, float64 xb, bool is_quiet, float_status *s)\n if (likely(isless(ua.h, ub.h))) {\n return float_relation_less;\n }\n- /* The only condition remaining is unordered.\n+ /*\n+ * The only condition remaining is unordered.\n * Fall through to set flags.\n */\n soft:\n- return soft_f64_compare(ua.s, ub.s, is_quiet, s);\n+ return float64_do_compare(ua.s, ub.s, s, is_quiet);\n }\n \n FloatRelation float64_compare(float64 a, float64 b, float_status *s)\n {\n- return f64_compare(a, b, false, s);\n+ return float64_hs_compare(a, b, s, false);\n }\n \n FloatRelation float64_compare_quiet(float64 a, float64 b, float_status *s)\n {\n- return f64_compare(a, b, true, s);\n+ return float64_hs_compare(a, b, s, true);\n }\n \n static FloatRelation QEMU_FLATTEN\n-soft_bf16_compare(bfloat16 a, bfloat16 b, bool is_quiet, float_status *s)\n+bfloat16_do_compare(bfloat16 a, bfloat16 b, float_status *s, bool is_quiet)\n {\n FloatParts64 pa, pb;\n \n bfloat16_unpack_canonical(&pa, a, s);\n bfloat16_unpack_canonical(&pb, b, s);\n- return compare_floats(pa, pb, is_quiet, s);\n+ return parts_compare(&pa, &pb, s, is_quiet);\n }\n \n FloatRelation bfloat16_compare(bfloat16 a, bfloat16 b, float_status *s)\n {\n- return soft_bf16_compare(a, b, false, s);\n+ return bfloat16_do_compare(a, b, s, false);\n }\n \n FloatRelation bfloat16_compare_quiet(bfloat16 a, bfloat16 b, float_status *s)\n {\n- return soft_bf16_compare(a, b, true, s);\n+ return bfloat16_do_compare(a, b, s, true);\n+}\n+\n+static FloatRelation QEMU_FLATTEN\n+float128_do_compare(float128 a, float128 b, float_status *s, bool is_quiet)\n+{\n+ FloatParts128 pa, pb;\n+\n+ float128_unpack_canonical(&pa, a, s);\n+ float128_unpack_canonical(&pb, b, s);\n+ return parts_compare(&pa, &pb, s, is_quiet);\n+}\n+\n+FloatRelation float128_compare(float128 a, float128 b, float_status *s)\n+{\n+ return float128_do_compare(a, b, s, false);\n+}\n+\n+FloatRelation float128_compare_quiet(float128 a, float128 b, float_status *s)\n+{\n+ return float128_do_compare(a, b, s, true);\n }\n \n /* Multiply A by 2 raised to the power N. */\n@@ -6611,52 +6601,6 @@ FloatRelation floatx80_compare_quiet(floatx80 a, floatx80 b,\n return floatx80_compare_internal(a, b, 1, status);\n }\n \n-static inline FloatRelation\n-float128_compare_internal(float128 a, float128 b, bool is_quiet,\n- float_status *status)\n-{\n- bool aSign, bSign;\n-\n- if (( ( extractFloat128Exp( a ) == 0x7fff ) &&\n- ( extractFloat128Frac0( a ) | extractFloat128Frac1( a ) ) ) ||\n- ( ( extractFloat128Exp( b ) == 0x7fff ) &&\n- ( extractFloat128Frac0( b ) | extractFloat128Frac1( b ) ) )) {\n- if (!is_quiet ||\n- float128_is_signaling_nan(a, status) ||\n- float128_is_signaling_nan(b, status)) {\n- float_raise(float_flag_invalid, status);\n- }\n- return float_relation_unordered;\n- }\n- aSign = extractFloat128Sign( a );\n- bSign = extractFloat128Sign( b );\n- if ( aSign != bSign ) {\n- if ( ( ( ( a.high | b.high )<<1 ) | a.low | b.low ) == 0 ) {\n- /* zero case */\n- return float_relation_equal;\n- } else {\n- return 1 - (2 * aSign);\n- }\n- } else {\n- if (a.low == b.low && a.high == b.high) {\n- return float_relation_equal;\n- } else {\n- return 1 - 2 * (aSign ^ ( lt128( a.high, a.low, b.high, b.low ) ));\n- }\n- }\n-}\n-\n-FloatRelation float128_compare(float128 a, float128 b, float_status *status)\n-{\n- return float128_compare_internal(a, b, 0, status);\n-}\n-\n-FloatRelation float128_compare_quiet(float128 a, float128 b,\n- float_status *status)\n-{\n- return float128_compare_internal(a, b, 1, status);\n-}\n-\n floatx80 floatx80_scalbn(floatx80 a, int n, float_status *status)\n {\n bool aSign;\ndiff --git a/fpu/softfloat-parts.c.inc b/fpu/softfloat-parts.c.inc\nindex 4d91ef0d32..4e11aa8b3b 100644\n--- a/fpu/softfloat-parts.c.inc\n+++ b/fpu/softfloat-parts.c.inc\n@@ -1005,3 +1005,60 @@ static int partsN(minmax)(FloatPartsN *a, FloatPartsN *b,\n }\n return a_less ^ !!(flags & minmax_ismin);\n }\n+\n+/*\n+ * Floating point compare\n+ */\n+static FloatRelation partsN(compare)(FloatPartsN *a, FloatPartsN *b,\n+ float_status *s, bool is_quiet)\n+{\n+ int ab_mask = float_cmask(a->cls) | float_cmask(b->cls);\n+ int cmp;\n+\n+ if (likely(ab_mask == float_cmask_normal)) {\n+ if (a->sign != b->sign) {\n+ goto a_sign;\n+ }\n+ if (a->exp != b->exp) {\n+ cmp = a->exp < b->exp ? -1 : 1;\n+ } else {\n+ cmp = frac_cmp(a, b);\n+ }\n+ if (a->sign) {\n+ cmp = -cmp;\n+ }\n+ return cmp;\n+ }\n+\n+ if (unlikely(ab_mask & float_cmask_anynan)) {\n+ if (!is_quiet || (ab_mask & float_cmask_snan)) {\n+ float_raise(float_flag_invalid, s);\n+ }\n+ return float_relation_unordered;\n+ }\n+\n+ if (ab_mask & float_cmask_zero) {\n+ if (ab_mask == float_cmask_zero) {\n+ return float_relation_equal;\n+ } else if (a->cls == float_class_zero) {\n+ goto b_sign;\n+ } else {\n+ goto a_sign;\n+ }\n+ }\n+\n+ if (ab_mask == float_cmask_inf) {\n+ if (a->sign == b->sign) {\n+ return float_relation_equal;\n+ }\n+ } else if (b->cls == float_class_inf) {\n+ goto b_sign;\n+ } else {\n+ g_assert(a->cls == float_class_inf);\n+ }\n+\n+ a_sign:\n+ return a->sign ? float_relation_less : float_relation_greater;\n+ b_sign:\n+ return b->sign ? float_relation_greater : float_relation_less;\n+}\n", "prefixes": [ "51/72" ] }