re PR target/39228 (387 optimised __builtin_isinf() gives incorrect result)
PR target/39228 * config/i386/i386.md (isinfxf2): Split from isinf<mode>2. (UNSPEC_FXAM_MEM): New unspec. (fxam<mode>2_i387_with_temp): New insn and split pattern. (isinf<mode>2): Use MODEF mode iterator. Force operand[1] through memory using fxam<mode>2_i387_with_temp to remove excess precision. testsuite/ChangeLog: PR target/39228 * gcc.c-torture/execute/pr39228.c: New test. From-SVN: r144293
This commit is contained in:
Uros Bizjak
parent
9e39dba643
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6b67572ed1
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@ -1,3 +1,12 @@
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2009-02-19 Uros Bizjak <ubizjak@gmail.com>
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PR target/39228
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* config/i386/i386.md (isinfxf2): Split from isinf<mode>2.
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(UNSPEC_FXAM_MEM): New unspec.
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(fxam<mode>2_i387_with_temp): New insn and split pattern.
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(isinf<mode>2): Use MODEF mode iterator. Force operand[1] through
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memory using fxam<mode>2_i387_with_temp to remove excess precision.
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2009-02-19 Richard Guenther <rguenther@suse.de>
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PR tree-optimization/39207
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@ -5,8 +14,7 @@
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* tree-ssa-structalias.c (storedanything_id, var_storedanything,
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storedanything_tree): New.
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(do_ds_constraint): Simplify ANYTHING shortcutting. Update
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the STOREDANYTHING solution if the lhs solution contains
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ANYTHING.
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the STOREDANYTHING solution if the lhs solution contains ANYTHING.
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(build_succ_graph): Add edges from STOREDANYTHING to all
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non-direct nodes.
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(init_base_vars): Initialize STOREDANYTHING.
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@ -29,8 +37,7 @@
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2009-02-18 H.J. Lu <hongjiu.lu@intel.com>
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PR target/39224
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* config/i386/i386.c (ix86_return_in_memory): Properly check
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ABI.
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* config/i386/i386.c (ix86_return_in_memory): Properly check ABI.
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2009-02-18 Jason Merrill <jason@redhat.com>
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@ -197,8 +204,7 @@
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PR target/39149
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* config/i386/i386.c (override_options): Correct warning
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messages for -malign-loops, -malign-jumps and
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-malign-functions.
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messages for -malign-loops, -malign-jumps and -malign-functions.
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2009-02-13 H.J. Lu <hongjiu.lu@intel.com>
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@ -210,8 +216,7 @@
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PR target/39162
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* config/i386/i386.c (type_natural_mode): Add a new argument.
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Return the original mode and warn ABI change if vector size
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is 32byte.
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Return the original mode and warn ABI change if vector size is 32byte.
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(function_arg_advance): Updated.
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(function_arg): Likewise.
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(ix86_function_value): Likewise.
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@ -290,7 +295,7 @@
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(TARGET_INIT_LIBFUNCS): Likewise.
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* config/ia64/t-glibc (SHLINB_MAPFILES):
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Add $(srcdir)/config/ia64/libgcc-glibc.ver,
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Add $(srcdir)/config/ia64/libgcc-glibc.ver.
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2009-02-12 H.J. Lu <hongjiu.lu@intel.com>
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@ -736,7 +741,7 @@
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* c-decl.c (pop_scope): Set DECL_EXTERNAL for functions declared
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inline but never defined.
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2009-01-30 Wolfgang Gellerich <gellerich@de,ibm.com>
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2009-01-30 Wolfgang Gellerich <gellerich@de.ibm.com>
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* config/s390/s390.md (*insv<mode>_reg_extimm): Removed.
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(*insv_h_di_reg_extimm): New insn.
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@ -875,7 +880,7 @@
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* reload1.c (compute_use_by_pseudos, reload, count_pseudo,
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count_spilled_pseudo, find_reg, alter_reg, delete_output_reload):
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Remove flag_ira.
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(finish_spills): Ditto. Remove code for !flga_ira.
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(finish_spills): Ditto. Remove code for !flag_ira.
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2009-01-29 Kenneth Zadeck <zadeck@naturalbridge.com>
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@ -978,7 +983,8 @@
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2009-01-28 Jakub Jelinek <jakub@redhat.com>
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PR rtl-optimization/38740
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* reorg.c (gate_handle_delay_slots): Avoid dbr scheduling if !optimize.
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* reorg.c (gate_handle_delay_slots): Avoid dbr scheduling
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if !optimize.
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* config/mips/mips.c (mips_reorg): Likewise.
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2009-01-28 Richard Guenther <rguenther@suse.de>
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@ -1242,8 +1248,8 @@
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2009-01-20 Joseph Myers <joseph@codesourcery.com>
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PR other/38758
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* longlong.h: Update copyright years. Use soft-fp license
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notice. Sync __clz_tab declaration with glibc.
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* longlong.h: Update copyright years. Use soft-fp license notice.
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Sync __clz_tab declaration with glibc.
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2009-01-20 Steve Ellcey <sje@cup.hp.com>
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@ -146,6 +146,7 @@
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(UNSPEC_FPREM1_U 91)
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(UNSPEC_C2_FLAG 95)
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(UNSPEC_FXAM_MEM 96)
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; SSP patterns
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(UNSPEC_SP_SET 100)
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@ -18811,9 +18812,56 @@
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(set_attr "unit" "i387")
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(set_attr "mode" "<MODE>")])
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(define_insn_and_split "fxam<mode>2_i387_with_temp"
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[(set (match_operand:HI 0 "register_operand" "")
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(unspec:HI
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[(match_operand:MODEF 1 "memory_operand" "")]
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UNSPEC_FXAM_MEM))]
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"TARGET_USE_FANCY_MATH_387
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&& !(reload_completed || reload_in_progress)"
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"#"
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"&& 1"
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[(set (match_dup 2)(match_dup 1))
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(set (match_dup 0)
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(unspec:HI [(match_dup 2)] UNSPEC_FXAM))]
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{
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operands[2] = gen_reg_rtx (<MODE>mode);
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MEM_VOLATILE_P (operands[1]) = 1;
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}
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[(set_attr "type" "multi")
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(set_attr "unit" "i387")
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(set_attr "mode" "<MODE>")])
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(define_expand "isinfxf2"
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[(use (match_operand:SI 0 "register_operand" ""))
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(use (match_operand:XF 1 "register_operand" ""))]
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"TARGET_USE_FANCY_MATH_387
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&& TARGET_C99_FUNCTIONS"
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{
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rtx mask = GEN_INT (0x45);
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rtx val = GEN_INT (0x05);
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rtx cond;
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rtx scratch = gen_reg_rtx (HImode);
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rtx res = gen_reg_rtx (QImode);
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emit_insn (gen_fxamxf2_i387 (scratch, operands[1]));
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emit_insn (gen_andqi_ext_0 (scratch, scratch, mask));
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emit_insn (gen_cmpqi_ext_3 (scratch, val));
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cond = gen_rtx_fmt_ee (EQ, QImode,
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gen_rtx_REG (CCmode, FLAGS_REG),
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const0_rtx);
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emit_insn (gen_rtx_SET (VOIDmode, res, cond));
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emit_insn (gen_zero_extendqisi2 (operands[0], res));
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DONE;
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})
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(define_expand "isinf<mode>2"
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[(use (match_operand:SI 0 "register_operand" ""))
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(use (match_operand:X87MODEF 1 "register_operand" ""))]
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(use (match_operand:MODEF 1 "nonimmediate_operand" ""))]
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"TARGET_USE_FANCY_MATH_387
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&& TARGET_C99_FUNCTIONS
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&& !(SSE_FLOAT_MODE_P (<MODE>mode) && TARGET_SSE_MATH)"
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@ -18826,7 +18874,18 @@
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rtx scratch = gen_reg_rtx (HImode);
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rtx res = gen_reg_rtx (QImode);
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emit_insn (gen_fxam<mode>2_i387 (scratch, operands[1]));
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/* Remove excess precision by forcing value through memory. */
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if (memory_operand (operands[1], VOIDmode))
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emit_insn (gen_fxam<mode>2_i387_with_temp (scratch, operands[1]));
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else
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{
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int slot = virtuals_instantiated ? SLOT_TEMP : SLOT_VIRTUAL;
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rtx temp = assign_386_stack_local (<MODE>mode, slot);
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emit_move_insn (temp, operands[1]);
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emit_insn (gen_fxam<mode>2_i387_with_temp (scratch, temp));
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}
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emit_insn (gen_andqi_ext_0 (scratch, scratch, mask));
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emit_insn (gen_cmpqi_ext_3 (scratch, val));
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cond = gen_rtx_fmt_ee (EQ, QImode,
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@ -1,3 +1,8 @@
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2009-02-19 Uros Bizjak <ubizjak@gmail.com>
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PR target/39228
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* gcc.c-torture/execute/pr39228.c: New test.
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2009-02-19 Richard Guenther <rguenther@suse.de>
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PR tree-optimization/39074
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@ -0,0 +1,36 @@
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extern void abort (void);
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static int __attribute__((always_inline)) testf (float b)
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{
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float c = 1.01f * b;
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return __builtin_isinff (c);
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}
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static int __attribute__((always_inline)) test (double b)
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{
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double c = 1.01 * b;
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return __builtin_isinf (c);
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}
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static int __attribute__((always_inline)) testl (long double b)
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{
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long double c = 1.01L * b;
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return __builtin_isinfl (c);
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}
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int main()
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{
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if (testf (__FLT_MAX__) < 1)
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abort ();
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if (test (__DBL_MAX__) < 1)
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abort ();
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if (testl (__LDBL_MAX__) < 1)
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abort ();
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return 0;
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}
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