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gcc41
ia64-bad-prologue-generation.patch
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File ia64-bad-prologue-generation.patch of Package gcc41
From: Andreas Schwab <andreas@suse.de> Subject: Fix bad prologue generation on ia64 References: 201157 PR29166 This fixes the prologue generation on ia64. The problem is that the return pointer is saved between the general registers and the branch registers, causing it to wind up in the middle of the gr/br/fr spill area when it is saved to memory. When any of the preserved general registers need to be spilled as well the location of these regsisters is off-by-8 compared to the location described by the unwind information. :ADDPATCH target/ia64: Andreas. 2006-11-24 Andreas Schwab <schwab@suse.de> PR target/29166 * config/ia64/ia64.c (ia64_compute_frame_size): Account space for save of BR0 in extra_spill_size instead of spill_size. (ia64_expand_prologue): Save BR0 outside of the gr/br/fr spill area. (ia64_expand_epilogue): Restore BR0 from its new location. testsuite/: * g++.dg/eh/pr29166.C: New test. Index: gcc-4.1.2-20070115/gcc/config/ia64/ia64.c =================================================================== --- gcc-4.1.2-20070115.orig/gcc/config/ia64/ia64.c 2007-01-15 11:11:07.000000000 +0100 +++ gcc-4.1.2-20070115/gcc/config/ia64/ia64.c 2009-11-20 13:41:35.000000000 +0100 @@ -2421,7 +2421,7 @@ ia64_compute_frame_size (HOST_WIDE_INT s current_frame_info.reg_save_b0 = find_gr_spill (1); if (current_frame_info.reg_save_b0 == 0) { - spill_size += 8; + extra_spill_size += 8; n_spilled += 1; } @@ -2450,7 +2450,7 @@ ia64_compute_frame_size (HOST_WIDE_INT s if (regs_ever_live[BR_REG (0)] && ! call_used_regs[BR_REG (0)]) { SET_HARD_REG_BIT (mask, BR_REG (0)); - spill_size += 8; + extra_spill_size += 8; n_spilled += 1; } @@ -3140,6 +3140,31 @@ ia64_expand_prologue (void) } } + /* Save the return pointer. */ + if (TEST_HARD_REG_BIT (current_frame_info.mask, BR_REG (0))) + { + reg = gen_rtx_REG (DImode, BR_REG (0)); + if (current_frame_info.reg_save_b0 != 0) + { + alt_reg = gen_rtx_REG (DImode, current_frame_info.reg_save_b0); + insn = emit_move_insn (alt_reg, reg); + RTX_FRAME_RELATED_P (insn) = 1; + + /* Even if we're not going to generate an epilogue, we still + need to save the register so that EH works. */ + if (! epilogue_p) + emit_insn (gen_prologue_use (alt_reg)); + } + else + { + alt_regno = next_scratch_gr_reg (); + alt_reg = gen_rtx_REG (DImode, alt_regno); + emit_move_insn (alt_reg, reg); + do_spill (gen_movdi_x, alt_reg, cfa_off, reg); + cfa_off -= 8; + } + } + if (current_frame_info.reg_save_gp) { insn = emit_move_insn (gen_rtx_REG (DImode, @@ -3166,32 +3191,6 @@ ia64_expand_prologue (void) cfa_off -= 8; } - /* Handle BR0 specially -- it may be getting stored permanently in - some GR register. */ - if (TEST_HARD_REG_BIT (current_frame_info.mask, BR_REG (0))) - { - reg = gen_rtx_REG (DImode, BR_REG (0)); - if (current_frame_info.reg_save_b0 != 0) - { - alt_reg = gen_rtx_REG (DImode, current_frame_info.reg_save_b0); - insn = emit_move_insn (alt_reg, reg); - RTX_FRAME_RELATED_P (insn) = 1; - - /* Even if we're not going to generate an epilogue, we still - need to save the register so that EH works. */ - if (! epilogue_p) - emit_insn (gen_prologue_use (alt_reg)); - } - else - { - alt_regno = next_scratch_gr_reg (); - alt_reg = gen_rtx_REG (DImode, alt_regno); - emit_move_insn (alt_reg, reg); - do_spill (gen_movdi_x, alt_reg, cfa_off, reg); - cfa_off -= 8; - } - } - /* Spill the rest of the BR registers. */ for (regno = BR_REG (1); regno <= BR_REG (7); ++regno) if (TEST_HARD_REG_BIT (current_frame_info.mask, regno)) @@ -3325,6 +3324,22 @@ ia64_expand_epilogue (int sibcall_p) emit_move_insn (reg, alt_reg); } + /* Restore the return pointer. */ + if (TEST_HARD_REG_BIT (current_frame_info.mask, BR_REG (0))) + { + if (current_frame_info.reg_save_b0 != 0) + alt_reg = gen_rtx_REG (DImode, current_frame_info.reg_save_b0); + else + { + alt_regno = next_scratch_gr_reg (); + alt_reg = gen_rtx_REG (DImode, alt_regno); + do_restore (gen_movdi_x, alt_reg, cfa_off); + cfa_off -= 8; + } + reg = gen_rtx_REG (DImode, BR_REG (0)); + emit_move_insn (reg, alt_reg); + } + /* We should now be at the base of the gr/br/fr spill area. */ gcc_assert (cfa_off == (current_frame_info.spill_cfa_off + current_frame_info.spill_size)); @@ -3343,23 +3358,7 @@ ia64_expand_epilogue (int sibcall_p) cfa_off -= 8; } - /* Restore the branch registers. Handle B0 specially, as it may - have gotten stored in some GR register. */ - if (TEST_HARD_REG_BIT (current_frame_info.mask, BR_REG (0))) - { - if (current_frame_info.reg_save_b0 != 0) - alt_reg = gen_rtx_REG (DImode, current_frame_info.reg_save_b0); - else - { - alt_regno = next_scratch_gr_reg (); - alt_reg = gen_rtx_REG (DImode, alt_regno); - do_restore (gen_movdi_x, alt_reg, cfa_off); - cfa_off -= 8; - } - reg = gen_rtx_REG (DImode, BR_REG (0)); - emit_move_insn (reg, alt_reg); - } - + /* Restore the branch registers. */ for (regno = BR_REG (1); regno <= BR_REG (7); ++regno) if (TEST_HARD_REG_BIT (current_frame_info.mask, regno)) { Index: gcc-4.1.2-20070115/gcc/testsuite/g++.dg/eh/pr29166.C =================================================================== --- /dev/null 1970-01-01 00:00:00.000000000 +0000 +++ gcc-4.1.2-20070115/gcc/testsuite/g++.dg/eh/pr29166.C 2009-11-20 13:41:35.000000000 +0100 @@ -0,0 +1,197 @@ +// PR 29166: r4-r7 corrupted when unwinding. +// { dg-do run } + +class Ex +{ +public: + int val; + + Ex( int v ) + : val( v ) + { } + +}; + +void doIt() +{ + int OFF( 1000 ); + register int v1=OFF+1,v2=OFF+2,v3=OFF+3,v4=OFF+4,v5=OFF+5,v6=OFF+6,v7=OFF+7,v8=OFF+8,v9=OFF+9,v10=OFF+10; + register int v11=OFF+11,v12=OFF+12,v13=OFF+13,v14=OFF+14,v15=OFF+15,v16=OFF+16,v17=OFF+17,v18=OFF+18,v19=OFF+19,v20=OFF+20; + register int v21=OFF+21,v22=OFF+22,v23=OFF+23,v24=OFF+24,v25=OFF+25,v26=OFF+26,v27=OFF+27,v28=OFF+28,v29=OFF+29,v30=OFF+30; + register int v31=OFF+31,v32=OFF+32,v33=OFF+33,v34=OFF+34,v35=OFF+35,v36=OFF+36,v37=OFF+37,v38=OFF+38,v39=OFF+39,v40=OFF+40; + register int v41=OFF+41,v42=OFF+42,v43=OFF+43,v44=OFF+44,v45=OFF+45,v46=OFF+46,v47=OFF+47,v48=OFF+48,v49=OFF+49,v50=OFF+50; + register int v51=OFF+51,v52=OFF+52,v53=OFF+53,v54=OFF+54,v55=OFF+55,v56=OFF+56,v57=OFF+57,v58=OFF+58,v59=OFF+59,v60=OFF+60; + register int v61=OFF+61,v62=OFF+62,v63=OFF+63,v64=OFF+64,v65=OFF+65,v66=OFF+66,v67=OFF+67,v68=OFF+68,v69=OFF+69,v70=OFF+70; + register int v71=OFF+71,v72=OFF+72,v73=OFF+73,v74=OFF+74,v75=OFF+75,v76=OFF+76,v77=OFF+77,v78=OFF+78,v79=OFF+79,v80=OFF+80; + register int v81=OFF+81,v82=OFF+82,v83=OFF+83,v84=OFF+84,v85=OFF+85,v86=OFF+86,v87=OFF+87,v88=OFF+88,v89=OFF+89,v90=OFF+90; + register int v91=OFF+91,v92=OFF+92,v93=OFF+93,v94=OFF+94,v95=OFF+95,v96=OFF+96,v97=OFF+97,v98=OFF+98,v99=OFF+99,v100=OFF+100; + register int v101=OFF+101,v102=OFF+102,v103=OFF+103,v104=OFF+104,v105=OFF+105,v106=OFF+106,v107=OFF+107,v108=OFF+108,v109=OFF+109,v110=OFF+110; + register int v111=OFF+111,v112=OFF+112,v113=OFF+113,v114=OFF+114,v115=OFF+115,v116=OFF+116,v117=OFF+117,v118=OFF+118,v119=OFF+119,v120=OFF+120; + register int v121=OFF+121,v122=OFF+122,v123=OFF+123,v124=OFF+124,v125=OFF+125,v126=OFF+126,v127=OFF+127,v128=OFF+128,v129=OFF+129,v130=OFF+130; + register int v131=OFF+131,v132=OFF+132,v133=OFF+133,v134=OFF+134,v135=OFF+135,v136=OFF+136,v137=OFF+137,v138=OFF+138,v139=OFF+139,v140=OFF+140; + register int v141=OFF+141,v142=OFF+142,v143=OFF+143,v144=OFF+144,v145=OFF+145,v146=OFF+146,v147=OFF+147,v148=OFF+148,v149=OFF+149,v150=OFF+150; + register int v151=OFF+151,v152=OFF+152,v153=OFF+153,v154=OFF+154,v155=OFF+155,v156=OFF+156,v157=OFF+157,v158=OFF+158,v159=OFF+159,v160=OFF+160; + register int v161=OFF+161,v162=OFF+162,v163=OFF+163,v164=OFF+164,v165=OFF+165,v166=OFF+166,v167=OFF+167,v168=OFF+168,v169=OFF+169,v170=OFF+170; + register int v171=OFF+171,v172=OFF+172,v173=OFF+173,v174=OFF+174,v175=OFF+175,v176=OFF+176,v177=OFF+177,v178=OFF+178,v179=OFF+179,v180=OFF+180; + register int v181=OFF+181,v182=OFF+182,v183=OFF+183,v184=OFF+184,v185=OFF+185,v186=OFF+186,v187=OFF+187,v188=OFF+188,v189=OFF+189,v190=OFF+190; + register int v191=OFF+191,v192=OFF+192,v193=OFF+193,v194=OFF+194,v195=OFF+195,v196=OFF+196,v197=OFF+197,v198=OFF+198,v199=OFF+199,v200=OFF+200; + register int v201=OFF+201,v202=OFF+202,v203=OFF+203,v204=OFF+204,v205=OFF+205,v206=OFF+206,v207=OFF+207,v208=OFF+208,v209=OFF+209,v210=OFF+210; + register int v211=OFF+211,v212=OFF+212,v213=OFF+213,v214=OFF+214,v215=OFF+215,v216=OFF+216,v217=OFF+217,v218=OFF+218,v219=OFF+219,v220=OFF+220; + register int v231=OFF+231,v232=OFF+232,v233=OFF+233,v234=OFF+234,v235=OFF+235,v236=OFF+236,v237=OFF+237,v238=OFF+238,v239=OFF+239,v240=OFF+240; + register int v241=OFF+241,v242=OFF+242,v243=OFF+243,v244=OFF+244,v245=OFF+245,v246=OFF+246,v247=OFF+247,v248=OFF+248,v249=OFF+249,v250=OFF+250; + register int v251=OFF+251,v252=OFF+252,v253=OFF+253,v254=OFF+254,v255=OFF+255,v256=OFF+256,v257=OFF+257,v258=OFF+258,v259=OFF+259,v260=OFF+260; + register int v261=OFF+261,v262=OFF+262,v263=OFF+263,v264=OFF+264,v265=OFF+265,v266=OFF+266,v267=OFF+267,v268=OFF+268,v269=OFF+269,v270=OFF+270; + register int v271=OFF+271,v272=OFF+272,v273=OFF+273,v274=OFF+274,v275=OFF+275,v276=OFF+276,v277=OFF+277,v278=OFF+278,v279=OFF+279,v280=OFF+280; + register int v281=OFF+281,v282=OFF+282,v283=OFF+283,v284=OFF+284,v285=OFF+285,v286=OFF+286,v287=OFF+287,v288=OFF+288,v289=OFF+289,v290=OFF+290; + register int v291=OFF+291,v292=OFF+292,v293=OFF+293,v294=OFF+294,v295=OFF+295,v296=OFF+296,v297=OFF+297,v298=OFF+298,v299=OFF+299,v300=OFF+300; + + register int sum = 0; + sum +=v1+v2+v3+v4+v5+v6+v7+v8+v9+v10; + sum +=v11+v12+v13+v14+v15+v16+v17+v18+v19+v20; + sum +=v21+v22+v23+v24+v25+v26+v27+v28+v29+v30; + sum +=v31+v32+v33+v34+v35+v36+v37+v38+v39+v40; + sum +=v41+v42+v43+v44+v45+v46+v47+v48+v49+v50; + sum +=v51+v52+v53+v54+v55+v56+v57+v58+v59+v60; + sum +=v61+v62+v63+v64+v65+v66+v67+v68+v69+v70; + sum +=v71+v72+v73+v74+v75+v76+v77+v78+v79+v80; + sum +=v81+v82+v83+v84+v85+v86+v87+v88+v89+v90; + sum +=v91+v92+v93+v94+v95+v96+v97+v98+v99+v100; + sum +=v101+v102+v103+v104+v105+v106+v107+v108+v109+v110; + sum +=v111+v112+v113+v114+v115+v116+v117+v118+v119+v120; + sum +=v121+v122+v123+v124+v125+v126+v127+v128+v129+v130; + sum +=v131+v132+v133+v134+v135+v136+v137+v138+v139+v140; + sum +=v141+v142+v143+v144+v145+v146+v147+v148+v149+v150; + sum +=v151+v152+v153+v154+v155+v156+v157+v158+v159+v160; + sum +=v161+v162+v163+v164+v165+v166+v167+v168+v169+v170; + sum +=v171+v172+v173+v174+v175+v176+v177+v178+v179+v180; + sum +=v181+v182+v183+v184+v185+v186+v187+v188+v189+v190; + sum +=v191+v192+v193+v194+v195+v196+v197+v198+v199+v200; + sum +=v201+v202+v203+v204+v205+v206+v207+v208+v209+v210; + sum +=v211+v212+v213+v214+v215+v216+v217+v218+v219+v220; + sum +=v231+v232+v233+v234+v235+v236+v237+v238+v239+v240; + sum +=v241+v242+v243+v244+v245+v246+v247+v248+v249+v250; + sum +=v251+v252+v253+v254+v255+v256+v257+v258+v259+v260; + sum +=v261+v262+v263+v264+v265+v266+v267+v268+v269+v270; + sum +=v271+v272+v273+v274+v275+v276+v277+v278+v279+v280; + sum +=v281+v282+v283+v284+v285+v286+v287+v288+v289+v290; + sum +=v291+v292+v293+v294+v295+v296+v297+v298+v299+v300; + + throw Ex( sum ); +} + +void test() +{ + try { + doIt(); + } catch( Ex& ) { } +} + +int main(int argc, char** argv) +{ + int OFF(0); + register int v1=OFF+1,v2=OFF+2,v3=OFF+3,v4=OFF+4,v5=OFF+5,v6=OFF+6,v7=OFF+7,v8=OFF+8,v9=OFF+9,v10=OFF+10; + register int v11=OFF+11,v12=OFF+12,v13=OFF+13,v14=OFF+14,v15=OFF+15,v16=OFF+16,v17=OFF+17,v18=OFF+18,v19=OFF+19,v20=OFF+20; + register int v21=OFF+21,v22=OFF+22,v23=OFF+23,v24=OFF+24,v25=OFF+25,v26=OFF+26,v27=OFF+27,v28=OFF+28,v29=OFF+29,v30=OFF+30; + register int v31=OFF+31,v32=OFF+32,v33=OFF+33,v34=OFF+34,v35=OFF+35,v36=OFF+36,v37=OFF+37,v38=OFF+38,v39=OFF+39,v40=OFF+40; + register int v41=OFF+41,v42=OFF+42,v43=OFF+43,v44=OFF+44,v45=OFF+45,v46=OFF+46,v47=OFF+47,v48=OFF+48,v49=OFF+49,v50=OFF+50; + register int v51=OFF+51,v52=OFF+52,v53=OFF+53,v54=OFF+54,v55=OFF+55,v56=OFF+56,v57=OFF+57,v58=OFF+58,v59=OFF+59,v60=OFF+60; + register int v61=OFF+61,v62=OFF+62,v63=OFF+63,v64=OFF+64,v65=OFF+65,v66=OFF+66,v67=OFF+67,v68=OFF+68,v69=OFF+69,v70=OFF+70; + register int v71=OFF+71,v72=OFF+72,v73=OFF+73,v74=OFF+74,v75=OFF+75,v76=OFF+76,v77=OFF+77,v78=OFF+78,v79=OFF+79,v80=OFF+80; + register int v81=OFF+81,v82=OFF+82,v83=OFF+83,v84=OFF+84,v85=OFF+85,v86=OFF+86,v87=OFF+87,v88=OFF+88,v89=OFF+89,v90=OFF+90; + register int v91=OFF+91,v92=OFF+92,v93=OFF+93,v94=OFF+94,v95=OFF+95,v96=OFF+96,v97=OFF+97,v98=OFF+98,v99=OFF+99,v100=OFF+100; + register int v101=OFF+101,v102=OFF+102,v103=OFF+103,v104=OFF+104,v105=OFF+105,v106=OFF+106,v107=OFF+107,v108=OFF+108,v109=OFF+109,v110=OFF+110; + register int v111=OFF+111,v112=OFF+112,v113=OFF+113,v114=OFF+114,v115=OFF+115,v116=OFF+116,v117=OFF+117,v118=OFF+118,v119=OFF+119,v120=OFF+120; + register int v121=OFF+121,v122=OFF+122,v123=OFF+123,v124=OFF+124,v125=OFF+125,v126=OFF+126,v127=OFF+127,v128=OFF+128,v129=OFF+129,v130=OFF+130; + register int v131=OFF+131,v132=OFF+132,v133=OFF+133,v134=OFF+134,v135=OFF+135,v136=OFF+136,v137=OFF+137,v138=OFF+138,v139=OFF+139,v140=OFF+140; + register int v141=OFF+141,v142=OFF+142,v143=OFF+143,v144=OFF+144,v145=OFF+145,v146=OFF+146,v147=OFF+147,v148=OFF+148,v149=OFF+149,v150=OFF+150; + register int v151=OFF+151,v152=OFF+152,v153=OFF+153,v154=OFF+154,v155=OFF+155,v156=OFF+156,v157=OFF+157,v158=OFF+158,v159=OFF+159,v160=OFF+160; + register int v161=OFF+161,v162=OFF+162,v163=OFF+163,v164=OFF+164,v165=OFF+165,v166=OFF+166,v167=OFF+167,v168=OFF+168,v169=OFF+169,v170=OFF+170; + register int v171=OFF+171,v172=OFF+172,v173=OFF+173,v174=OFF+174,v175=OFF+175,v176=OFF+176,v177=OFF+177,v178=OFF+178,v179=OFF+179,v180=OFF+180; + register int v181=OFF+181,v182=OFF+182,v183=OFF+183,v184=OFF+184,v185=OFF+185,v186=OFF+186,v187=OFF+187,v188=OFF+188,v189=OFF+189,v190=OFF+190; + register int v191=OFF+191,v192=OFF+192,v193=OFF+193,v194=OFF+194,v195=OFF+195,v196=OFF+196,v197=OFF+197,v198=OFF+198,v199=OFF+199,v200=OFF+200; + register int v201=OFF+201,v202=OFF+202,v203=OFF+203,v204=OFF+204,v205=OFF+205,v206=OFF+206,v207=OFF+207,v208=OFF+208,v209=OFF+209,v210=OFF+210; + register int v211=OFF+211,v212=OFF+212,v213=OFF+213,v214=OFF+214,v215=OFF+215,v216=OFF+216,v217=OFF+217,v218=OFF+218,v219=OFF+219,v220=OFF+220; + register int v231=OFF+231,v232=OFF+232,v233=OFF+233,v234=OFF+234,v235=OFF+235,v236=OFF+236,v237=OFF+237,v238=OFF+238,v239=OFF+239,v240=OFF+240; + register int v241=OFF+241,v242=OFF+242,v243=OFF+243,v244=OFF+244,v245=OFF+245,v246=OFF+246,v247=OFF+247,v248=OFF+248,v249=OFF+249,v250=OFF+250; + register int v251=OFF+251,v252=OFF+252,v253=OFF+253,v254=OFF+254,v255=OFF+255,v256=OFF+256,v257=OFF+257,v258=OFF+258,v259=OFF+259,v260=OFF+260; + register int v261=OFF+261,v262=OFF+262,v263=OFF+263,v264=OFF+264,v265=OFF+265,v266=OFF+266,v267=OFF+267,v268=OFF+268,v269=OFF+269,v270=OFF+270; + register int v271=OFF+271,v272=OFF+272,v273=OFF+273,v274=OFF+274,v275=OFF+275,v276=OFF+276,v277=OFF+277,v278=OFF+278,v279=OFF+279,v280=OFF+280; + register int v281=OFF+281,v282=OFF+282,v283=OFF+283,v284=OFF+284,v285=OFF+285,v286=OFF+286,v287=OFF+287,v288=OFF+288,v289=OFF+289,v290=OFF+290; + register int v291=OFF+291,v292=OFF+292,v293=OFF+293,v294=OFF+294,v295=OFF+295,v296=OFF+296,v297=OFF+297,v298=OFF+298,v299=OFF+299,v300=OFF+300; + + int sum_before, sum_after; + + { + int sum( 0 ); + sum +=v1+v2+v3+v4+v5+v6+v7+v8+v9+v10; + sum +=v11+v12+v13+v14+v15+v16+v17+v18+v19+v20; + sum +=v21+v22+v23+v24+v25+v26+v27+v28+v29+v30; + sum +=v31+v32+v33+v34+v35+v36+v37+v38+v39+v40; + sum +=v41+v42+v43+v44+v45+v46+v47+v48+v49+v50; + sum +=v51+v52+v53+v54+v55+v56+v57+v58+v59+v60; + sum +=v61+v62+v63+v64+v65+v66+v67+v68+v69+v70; + sum +=v71+v72+v73+v74+v75+v76+v77+v78+v79+v80; + sum +=v81+v82+v83+v84+v85+v86+v87+v88+v89+v90; + sum +=v91+v92+v93+v94+v95+v96+v97+v98+v99+v100; + sum +=v101+v102+v103+v104+v105+v106+v107+v108+v109+v110; + sum +=v111+v112+v113+v114+v115+v116+v117+v118+v119+v120; + sum +=v121+v122+v123+v124+v125+v126+v127+v128+v129+v130; + sum +=v131+v132+v133+v134+v135+v136+v137+v138+v139+v140; + sum +=v141+v142+v143+v144+v145+v146+v147+v148+v149+v150; + sum +=v151+v152+v153+v154+v155+v156+v157+v158+v159+v160; + sum +=v161+v162+v163+v164+v165+v166+v167+v168+v169+v170; + sum +=v171+v172+v173+v174+v175+v176+v177+v178+v179+v180; + sum +=v181+v182+v183+v184+v185+v186+v187+v188+v189+v190; + sum +=v191+v192+v193+v194+v195+v196+v197+v198+v199+v200; + sum +=v201+v202+v203+v204+v205+v206+v207+v208+v209+v210; + sum +=v211+v212+v213+v214+v215+v216+v217+v218+v219+v220; + sum +=v231+v232+v233+v234+v235+v236+v237+v238+v239+v240; + sum +=v241+v242+v243+v244+v245+v246+v247+v248+v249+v250; + sum +=v251+v252+v253+v254+v255+v256+v257+v258+v259+v260; + sum +=v261+v262+v263+v264+v265+v266+v267+v268+v269+v270; + sum +=v271+v272+v273+v274+v275+v276+v277+v278+v279+v280; + sum +=v281+v282+v283+v284+v285+v286+v287+v288+v289+v290; + sum +=v291+v292+v293+v294+v295+v296+v297+v298+v299+v300; + + sum_before = sum; + } + + test(); + + { + int sum( 0 ); + sum +=v1+v2+v3+v4+v5+v6+v7+v8+v9+v10; + sum +=v11+v12+v13+v14+v15+v16+v17+v18+v19+v20; + sum +=v21+v22+v23+v24+v25+v26+v27+v28+v29+v30; + sum +=v31+v32+v33+v34+v35+v36+v37+v38+v39+v40; + sum +=v41+v42+v43+v44+v45+v46+v47+v48+v49+v50; + sum +=v51+v52+v53+v54+v55+v56+v57+v58+v59+v60; + sum +=v61+v62+v63+v64+v65+v66+v67+v68+v69+v70; + sum +=v71+v72+v73+v74+v75+v76+v77+v78+v79+v80; + sum +=v81+v82+v83+v84+v85+v86+v87+v88+v89+v90; + sum +=v91+v92+v93+v94+v95+v96+v97+v98+v99+v100; + sum +=v101+v102+v103+v104+v105+v106+v107+v108+v109+v110; + sum +=v111+v112+v113+v114+v115+v116+v117+v118+v119+v120; + sum +=v121+v122+v123+v124+v125+v126+v127+v128+v129+v130; + sum +=v131+v132+v133+v134+v135+v136+v137+v138+v139+v140; + sum +=v141+v142+v143+v144+v145+v146+v147+v148+v149+v150; + sum +=v151+v152+v153+v154+v155+v156+v157+v158+v159+v160; + sum +=v161+v162+v163+v164+v165+v166+v167+v168+v169+v170; + sum +=v171+v172+v173+v174+v175+v176+v177+v178+v179+v180; + sum +=v181+v182+v183+v184+v185+v186+v187+v188+v189+v190; + sum +=v191+v192+v193+v194+v195+v196+v197+v198+v199+v200; + sum +=v201+v202+v203+v204+v205+v206+v207+v208+v209+v210; + sum +=v211+v212+v213+v214+v215+v216+v217+v218+v219+v220; + sum +=v231+v232+v233+v234+v235+v236+v237+v238+v239+v240; + sum +=v241+v242+v243+v244+v245+v246+v247+v248+v249+v250; + sum +=v251+v252+v253+v254+v255+v256+v257+v258+v259+v260; + sum +=v261+v262+v263+v264+v265+v266+v267+v268+v269+v270; + sum +=v271+v272+v273+v274+v275+v276+v277+v278+v279+v280; + sum +=v281+v282+v283+v284+v285+v286+v287+v288+v289+v290; + sum +=v291+v292+v293+v294+v295+v296+v297+v298+v299+v300; + + sum_after = sum; + } + + return sum_before != sum_after; +}
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