gcc: xtensa: Backport patches from upstream/master

2b5b8610e985e23a0c2e0272339ab074a750e240 "xtensa: Fix non-robust split condition in define_insn_and_split"
7e5baa7e6f4caced6bdaef6d866d19e7656d8a16 "xtensa: fix -Wformat-diag warnings."
d543bac1631700f0da30d5ca555296f4938a82c6 "xtensa: Rename deprecated extv/extzv insn patterns to extvsi/extzvsi"
112447f8564c0307c5da99a4094a3a99f204239f "xtensa: Reflect the 32-bit Integer Divide Option"
b753405a5f0d45eea97f4cc7df2c2089401b08bf "xtensa: Simplify EXTUI instruction maskimm validations"
9b251fe2e39a49c0d3ecd34cf8c5d55544efd159 "xtensa: Make use of IN_RANGE macro where appropriate"
3397563ad6c8fc5d9675faf507e52dd2ed284202 "xtensa: Fix instruction counting regarding block move expansion"
6454b4a8f5d90dd355c3c7e31a592a439223b645 "xtensa: Add setmemsi insn pattern"
9aad2b22436d5346fa224e5c14439dcef36cf3dd "xtensa: Improve bswap[sd]i2 insn patterns"
e94c6dbfb57a862dd8a8685eabc4886ad1aaea25 "xtensa: fix PR target/105879"
2fcc69d8ce4eddf6dea878a5383254d366e1bb14 "xtensa: Implement bswaphi2 insn pattern"
9777d446e2148ef9a6e9f35db3f4eab99ee8812c "xtensa: Make one_cmplsi2 optimizer-friendly"
e44e7face13f38f9b228e2619786ba0add9ef77b "xtensa: Optimize '(~x & y)' to '((x & y) ^ y)'"
29dc90a580bf45f503ed89eb1dc63b5676db776b "xtensa: Add clrsbsi2 insn pattern"
9489a1ab05ad1bda7126da5513f08282da3e531d "xtensa: Tweak some widen multiplications"
fddf0e1057fe24eff0d894fbc2959b4086464a96 "xtensa: Consider the Loop Option when setmemsi is expanded to small loop"
ccd02e734e0f1742629403b46e5b1c650b00fd65 "xtensa: Improve instruction cost estimation and suggestion"
cd02f15f1aecc45b2c2feae16840503549508619 "xtensa: Improve constant synthesis for both integer and floating-point"
1c68ec1f8ab531fba56cccf549ffe592bf622821 "xtensa: Improve shift operations more"
e1b193c1cce3a975a9ed60dd0f30182fe0255d7c "xtensa: Simplify conditional branch/move insn patterns"
70ce04ca353bb0cda8321b91a77c2477e26d339b "xtensa: Make use of BALL/BNALL instructions"
077438933cf94f00cc5edf974338c11ba4bf7a39 "xtensa: Optimize bitwise AND operation with some specific forms of constants"
96518f714e3fab53a966a05b8d48011e27c1a718 "xtensa: Document new -mextra-l32r-costs= Xtensa-specific option"
43b0c56fda4bc990e8ee8d6a0b376de7b663bb06 "xtensa: Add support for sibling call optimization"
c95e307e3a978166cd5d6817ec9d8293825ff3fb "xtensa: Add some dedicated patterns that correspond to GIMPLE canonicalizations"
cfad4856fa46abc878934a9433d0bfc2482ccf00 "xtensa: Eliminate unwanted reg-reg moves during DFmode input reloads"
ce3867d414bd7d9e5b6fb2a51b1fb3d9e9e1eae9 "xtensa: Eliminate [DS]Cmode hard register clobber that is immediately followed by whole overwrite the register"
479b6f449ee999501ad6eff0b7db8d0cd5b2d28d "xtensa: Defer storing integer constants into litpool until reload"