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2018-12-26tcg: Improve call argument loadingRichard Henderson1-1/+2
Free the argument register only after we have verified that the temporary is not already in that register. This case is likely now that we are back propagating the preferred register. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Record register preferences during livenessRichard Henderson1-32/+165
With these preferences, we can arrange for function call arguments to be computed into the proper registers instead of requiring extra moves. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add TCG_OPF_BB_EXITRichard Henderson3-10/+16
Use this to notice the opcodes that exit the TB, which implies that local temps are really dead and need not be synced. Previously we so marked the true end of the TB, but that was immediately overwritten by the la_bb_end invoked by any TCG_OPF_BB_END opcode, like exit_tb. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Split out more subroutines from liveness_pass_1Richard Henderson1-12/+23
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Rename and adjust liveness_pass_1 helpersRichard Henderson1-8/+5
No need for a "tcg_" prefix for a static function; we already have another "la_" prefix for indicating liveness analysis. Pass in nb_globals and nb_temps, as we will already have them in registers for other loops within the parent function. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Reindent parts of liveness_pass_1Richard Henderson1-67/+70
There are two blocks of the form if (foo) { stuff1; goto bar; } else { baz: stuff2; } which have unnecessary and confusing indentation. Remove the else and unindent stuff2. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Dump register preference info with livenessRichard Henderson2-10/+37
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Improve register allocation for matching constraintsRichard Henderson1-12/+24
Try harder to honor the output_pref. When we're forced to allocate a second register for the input, it does not need to use the input constraint; that will be honored by the register we allocate for the output and a move is already required. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add output_pref to TCGOpRichard Henderson2-7/+14
Allocate storage for, but do not yet fill in, per-opcode preferences for the output operands. Pass it in to the register allocation routines for output operands. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to tcg_reg_alloc_do_moviRichard Henderson1-4/+5
Pass this through to temp_sync. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to temp_syncRichard Henderson1-8/+8
Pass this through to tcg_reg_alloc. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to temp_loadRichard Henderson1-9/+9
Pass this through to tcg_reg_alloc. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add preferred_reg argument to tcg_reg_allocRichard Henderson1-22/+81
This new argument will aid register allocation by indicating how the temporary will be used in future. If the preference cannot be satisfied, fall back to the constraints of the current insn. Short circuit the preference when it cannot be satisfied or if it does not further constrain the operation. With an eye toward optimizing function call sequences, optimize for the preferred_reg set containing a single register. For the moment, all users pass 0 for preference. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add reachable_code_passRichard Henderson1-0/+76
Delete trivially dead code that follows unconditional branches and noreturn helpers. These can occur either via optimization or via the structure of a target's translator following an exception. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Reference count labelsRichard Henderson4-1/+25
Increment when adding branches, and decrement when removing them. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Add TCG_CALL_NO_RETURNRichard Henderson1-0/+2
Remember which helpers have been marked noreturn. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg: Renumber TCG_CALL_* flagsRichard Henderson1-3/+3
Previously, the low 4 bits were used for TCG_CALL_TYPE_MASK, which was removed in 6a18ae2d2947532d5c26439548afa0481c4529f9. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the target init codeAlistair Francis1-0/+31
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <dd6e439ab81883974b8fd91f904f6de26ab5d697.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the prologue generation and register the JITAlistair Francis1-0/+111
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <c4d023127967a0217d8d1eabdf5de6c0e8f8c228.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the out op decoderAlistair Francis1-0/+496
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <7c47f00cb4a9a777120456e0704b4076a5d943ab.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add direct load and store instructionsAlistair Francis1-0/+158
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <2e047a95c39c007c66cda024c095e29b0ac4c43e.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add slowpath load and store instructionsAlistair Francis1-0/+256
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <1a0a7e8f3347764f212c5efa5c07c9be17efdec6.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add branch and jump instructionsAlistair Francis1-0/+145
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <c356657e627168d89cb5b012b7e21e4efbbe83f3.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the add2 and sub2 instructionsAlistair Francis1-0/+55
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <5665a57809e32b35775e8e98fdab898853af37b8.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the out load and store instructionsAlistair Francis1-0/+65
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <d5d88ff29163788938368bbdbd18815d59cef6a0.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the extract instructionsAlistair Francis1-0/+34
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <c4d2afba46efefa9388cf3205fcedbb9a5fa411f.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the mov and movi instructionAlistair Francis1-0/+86
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <bd6a45c73a67b77ddaa2fe590a6bb8ee422b9683.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the relocation functionsAlistair Francis1-0/+88
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <6ac4f4b0d5ea93cb0ee9a3b8b47ee9f7b3711494.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the instruction emittersAlistair Francis1-0/+48
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <c740aca183675625bb9cf3ce7b9e8b9d431ca694.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the immediate encodersAlistair Francis1-0/+90
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <d54dc56303fd1b0d7ed53869de2dbb59b111c7ca.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add support for the constraintsAlistair Francis1-0/+168
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <dba7315e4e20e879933f72d47ccf98f1cc612b8a.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the tcg target registersAlistair Francis1-0/+118
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <6e43abaa64361d57b9bc9439820d0e7701f2d47e.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26tcg/riscv: Add the tcg-target.h fileAlistair Francis1-0/+177
Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Michael Clark <mjc@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <a135ee1a88cd7bd08993a519d4d654da27785254.1545246859.git.alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg: Drop nargs from tcg_op_insert_{before,after}Emilio G. Cota3-10/+8
It's unused since 75e8b9b7aa0b95a761b9add7e2f09248b101a392. Signed-off-by: Emilio G. Cota <cota@braap.org> Message-Id: <20181209193749.12277-9-cota@braap.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/mips: Improve the add2/sub2 command to use TCG_TARGET_REG_BITSAlistair Francis1-1/+1
Instead of hard coding 31 for the shift right use TCG_TARGET_REG_BITS - 1. Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <7dfbddf7014a595150aa79011ddb342c3cc17ec3.1544648105.git.alistair.francis@wdc.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg: Add TCG_TARGET_HAS_MEMORY_BSWAPRichard Henderson9-2/+126
For now, defined universally as true, since we previously required backends to implement swapped memory operations. Future patches may now remove that support where it is onerous. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/optimize: Optimize bswapRichard Henderson1-0/+12
Somehow we forgot these operations, once upon a time. This will allow immediate stores to have their bswap optimized away. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg: Clean up generic bswap64Richard Henderson1-27/+20
Based on the only current user, Sparc: New code uses 2 constants that take 2 insns to load from constant pool, plus 13. Old code used 6 constants that took 1 or 2 insns to create, plus 21. The result is a new total of 17 vs an old total of 29. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg: Clean up generic bswap32Richard Henderson1-27/+27
Based on the only current user, Sparc: New code uses 1 constant that takes 2 insns to create, plus 8. Old code used 2 constants that took 2 insns to create, plus 9. The result is a new total of 10 vs an old total of 13. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Add setup_guest_base_seg for FreeBSDRichard Henderson1-0/+9
Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Precompute all guest_base parametersRichard Henderson1-61/+40
These values are constant between all qemu_ld/st invocations; there is no need to figure this out each time. If we cannot use a segment or an offset directly for guest_base, load the value into a register in the prologue. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Assume 32-bit values are zero-extendedRichard Henderson1-63/+40
We now have an invariant that all TCG_TYPE_I32 values are zero-extended, which means that we do not need to extend them again during qemu_ld/st, either explicitly via a separate tcg_out_ext32u or implicitly via P_ADDR32. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Implement INDEX_op_extr{lh}_i64_i32 for 32-bit guestsRichard Henderson2-2/+9
This preserves the invariant that all TCG_TYPE_I32 values are zero-extended in the 64-bit host register. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Propagate is64 to tcg_out_qemu_ld_slow_pathRichard Henderson1-5/+8
This helps preserve the invariant that all TCG_TYPE_I32 values are stored zero-extended in the 64-bit host registers. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Propagate is64 to tcg_out_qemu_ld_directRichard Henderson1-6/+7
This helps preserve the invariant that all TCG_TYPE_I32 values are stored zero-extended in the 64-bit host registers. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/s390x: Return false on failure from patch_relocRichard Henderson1-11/+23
This does require an extra two checks within the slow paths to replace the assert that we're moving. Also add two checks within existing functions that lacked any kind of assert for out of range branch. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/ppc: Return false on failure from patch_relocRichard Henderson1-11/+21
The reloc_pc{14,24}_val routines retain their asserts. Use these directly within the slow paths. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/arm: Return false on failure from patch_relocRichard Henderson1-6/+16
This does require an extra two checks within the slow paths to replace the assert that we're moving. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/aarch64: Return false on failure from patch_relocRichard Henderson1-16/+21
This does require an extra two checks within the slow paths to replace the assert that we're moving. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-17tcg/i386: Return false on failure from patch_relocRichard Henderson1-2/+2
Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
generated by cgit v1.1 at 2024-12-28 20:29:00 +0000