{"id":2223516,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2223516/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/patch/20260415124947.1625613-1-vijay@linux.ibm.com/","project":{"id":17,"url":"http://patchwork.ozlabs.org/api/1.2/projects/17/?format=json","name":"GNU Compiler Collection","link_name":"gcc","list_id":"gcc-patches.gcc.gnu.org","list_email":"gcc-patches@gcc.gnu.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260415124947.1625613-1-vijay@linux.ibm.com>","list_archive_url":null,"date":"2026-04-15T12:49:47","name":"[v2] rs6000: Optimize TLS access with combine patterns [PR27479]","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"7e251200dc185c5dd10c944c720f22c50d4c9de6","submitter":{"id":91942,"url":"http://patchwork.ozlabs.org/api/1.2/people/91942/?format=json","name":"Vijay shankar telidevulapalli","email":"vijay@linux.ibm.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/gcc/patch/20260415124947.1625613-1-vijay@linux.ibm.com/mbox/","series":[{"id":499986,"url":"http://patchwork.ozlabs.org/api/1.2/series/499986/?format=json","web_url":"http://patchwork.ozlabs.org/project/gcc/list/?series=499986","date":"2026-04-15T12:49:47","name":"[v2] rs6000: Optimize TLS access with combine patterns [PR27479]","version":2,"mbox":"http://patchwork.ozlabs.org/series/499986/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2223516/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2223516/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","gcc-patches@gcc.gnu.org"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","gcc-patches@gcc.gnu.org"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=ibm.com header.i=@ibm.com header.a=rsa-sha256\n header.s=pp1 header.b=endZTZ+2;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=gcc.gnu.org\n (client-ip=38.145.34.32; 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Two instructions needed: lbz (zero-extend load byte) + extsb (sign-extend)\n+;; because there is no sign-extended load byte instruction, only zero-extended.\n+(define_insn_and_split \"*tprel_ld_QI_signed\"\n+ [(set (match_operand:DI 0 \"gpc_reg_operand\" \"=r\")\n+\t(sign_extend:DI\n+\t (mem:QI\n+\t (unspec:P\n+\t [(match_operand:P 1 \"gpc_reg_operand\" \"b\")\n+\t (match_operand:P 2 \"rs6000_tls_symbol_ref\" \"\")]\n+\t UNSPEC_TLSTPRELLO))))]\n+ \"HAVE_AS_TLS\"\n+ \"#\"\n+ \"&& reload_completed\"\n+ [(set (match_dup 0)\n+\t(zero_extend:DI\n+\t (mem:QI\n+\t (unspec:P\n+\t [(match_dup 1)\n+\t (match_dup 2)]\n+\t UNSPEC_TLSTPRELLO))))\n+ (set (match_dup 0)\n+\t(sign_extend:DI\n+\t (subreg:QI (match_dup 0) 0)))])\n+\n+(define_insn \"*tprel_ld_QI\"\n+ [(set (match_operand:DI 0 \"gpc_reg_operand\" \"=r\")\n+\t(zero_extend:DI\n+\t (mem:QI\n+\t (unspec:P\n+\t [(match_operand:P 1 \"gpc_reg_operand\" \"b\")\n+\t (match_operand:P 2 \"rs6000_tls_symbol_ref\" \"\")]\n+\t UNSPEC_TLSTPRELLO))))]\n+ \"HAVE_AS_TLS\"\n+ \"lbz %0,%2@tprel@l(%1)\"\n+ [(set_attr \"type\" \"load\")])\n+\n+(define_insn \"*tprel_ld_DI\"\n+ [(set (match_operand:DI 0 \"gpc_reg_operand\" \"=r\")\n+\t(mem:DI\n+\t (unspec:P\n+\t [(match_operand:P 1 \"gpc_reg_operand\" \"b\")\n+\t (match_operand:P 2 \"rs6000_tls_symbol_ref\" \"\")]\n+\t UNSPEC_TLSTPRELLO)))]\n+ \"HAVE_AS_TLS\"\n+ \"ld %0,%2@tprel@l(%1)\"\n+ [(set_attr \"type\" \"load\")])\n+\n+(define_insn \"*tprel_ld_\"\n+ [(set (match_operand:SFDF 0 \"gpc_reg_operand\" \"=f\")\n+\t(mem:SFDF\n+\t (unspec:P\n+\t [(match_operand:P 1 \"gpc_reg_operand\" \"b\")\n+\t (match_operand:P 2 \"rs6000_tls_symbol_ref\" \"\")]\n+\t UNSPEC_TLSTPRELLO)))]\n+ \"HAVE_AS_TLS\"\n+ \"lf %0,%2@tprel@l(%1)\"\n+ [(set_attr \"type\" \"fpload\")])\n+\n (define_insn_and_split \"*tls_gd\"\n [(set (match_operand:P 0 \"gpc_reg_operand\" \"=b\")\n \t(unspec:P [(match_operand:P 1 \"rs6000_tls_symbol_ref\" \"\")\ndiff --git a/gcc/testsuite/gcc.target/powerpc/pr27479.c b/gcc/testsuite/gcc.target/powerpc/pr27479.c\nnew file mode 100644\nindex 000000000..3f43643b3\n--- /dev/null\n+++ b/gcc/testsuite/gcc.target/powerpc/pr27479.c\n@@ -0,0 +1,95 @@\n+/* { dg-do compile } */\n+/* { dg-options \"-O2 -mdejagnu-cpu=power9\" } */\n+\n+/* verify TLS access for PR27479*/\n+\n+/* TLS variables of many types. */\n+__thread unsigned char t_uc;\n+__thread signed char t_sc;\n+__thread unsigned short t_us;\n+__thread short t_ss;\n+__thread unsigned int t_ui;\n+__thread int t_si;\n+__thread unsigned long t_ul;\n+__thread long t_sl;\n+__thread _Bool t_bool;\n+__thread int *t_ptr;\n+\n+/* Floating-point. */\n+__thread float t_f;\n+__thread double t_d;\n+\n+unsigned long\n+foo_uc (void)\n+{\n+ return t_uc;\n+}\n+\n+long\n+foo_sc (void)\n+{\n+ return t_sc;\n+}\n+\n+unsigned long\n+foo_us (void)\n+{\n+ return t_us;\n+}\n+\n+long\n+foo_ss (void)\n+{\n+ return t_ss;\n+}\n+\n+unsigned long\n+foo_ui (void)\n+{\n+ return t_ui;\n+}\n+\n+long\n+foo_si (void)\n+{\n+ return t_si;\n+}\n+\n+unsigned long\n+foo_ul (void)\n+{\n+ return t_ul;\n+}\n+\n+long\n+foo_sl (void)\n+{\n+ return t_sl;\n+}\n+\n+unsigned long\n+foo_bool (void)\n+{\n+ return t_bool;\n+}\n+\n+int *\n+foo_ptr (void)\n+{\n+ return t_ptr;\n+}\n+\n+/* Floating-point accessors. */\n+float\n+foo_f (void)\n+{\n+ return t_f;\n+}\n+\n+double\n+foo_d (void)\n+{\n+ return t_d;\n+}\n+\n+/* { dg-final { scan-assembler-not {\\maddi\\M} } } */\n","prefixes":["v2"]}