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2011-08-28TCG: improve optimizer debuggingBlue Swirl1-6/+9
Use enum TCGOpcode instead of plain old int so that the name of current op can be seen in GDB. Add a default case to switch so that GCC does not complain about unhandled enum cases. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-23tcg: Update --enable-debug for TCG_OPF_NOT_PRESENT.Richard Henderson1-7/+8
Signed-off-by: Richard Henderson <rth@twiddle.net> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-08-22tcg/ppc64: fix 16/32 mixupmalc1-2/+2
Signed-off-by: malc <av1474@comtv.ru>
2011-08-22tcg/ppc64: implement not_i32/64 and ext32u_i64malc2-3/+16
Signed-off-by: malc <av1474@comtv.ru>
2011-08-22tcg/ppc32: implement deposit_i32malc2-1/+13
Signed-off-by: malc <av1474@comtv.ru>
2011-08-21tcg-ia64: Fix typos in AREG0 setup in prologue.Richard Henderson1-2/+2
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-21tcg-hppa: Fix CPU_TEMP_BUF_NLONGS oversight.Richard Henderson1-1/+1
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-21tcg: Constant fold neg, andc, orc, eqv, nand, nor.Richard Henderson1-0/+27
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-21tcg: Always define all of the TCGOpcode enum members.Richard Henderson14-1008/+837
By always defining these symbols, we can eliminate a lot of ifdefs. To allow this to be checked reliably, the semantics of the TCG_TARGET_HAS_* macros must be changed from def/undef to true/false. This allows even more ifdefs to be removed, converting them into C if statements. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-21tcg: Add and use TCG_OPF_64BIT.Richard Henderson4-131/+67
This allows the simplification of the op_bits function from tcg/optimize.c. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori1-4/+4
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-07TCG: fix copy propagationBlue Swirl2-6/+14
Copy propagation introduced in 22613af4a6d9602001e6d0e7b6d98aa40aa018dc considered only global registers. However, register temps and stack allocated locals must be handled differently because register temps don't survive across brcond. Fix by propagating only within same class of temps. Tested-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30TCG: fix breakage by previous patchBlue Swirl1-7/+12
Fix incorrect logic and typos in previous commit 1bfd07bdfe56cea43dbe258dcb161e46b0ee29b7. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30TCG: fix breakage on some RISC hostsBlue Swirl1-13/+115
Fix breakage by a640f03178c22355a158fa9378e4f8bfa4f517a6 and 55c0975c5b358e948b9ae7bd7b07eff92508e756. Some TCG targets don't implement all TCG ops, so make optimizing those conditional. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Do constant folding for unary operations.Kirill Batuzov1-0/+59
Perform constant folding for NOT and EXT{8,16,32}{S,U} operations. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Do constant folding for shift operations.Kirill Batuzov1-0/+72
Perform constant forlding for SHR, SHL, SAR, ROTR, ROTL operations. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Do constant folding for boolean operations.Kirill Batuzov1-0/+37
Perform constant folding for AND, OR, XOR operations. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Do constant folding for basic arithmetic operations.Kirill Batuzov1-0/+125
Perform actual constant folding for ADD, SUB and MUL operations. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Add copy and constant propagation.Kirill Batuzov1-2/+180
Make tcg_constant_folding do copy and constant propagation. It is a preparational work before actual constant folding. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-30Add TCG optimizations stubKirill Batuzov3-0/+106
Added file tcg/optimize.c to hold TCG optimizations. Function tcg_optimize is called from tcg_gen_code_common. It calls other functions performing specific optimizations. Stub for constant folding was added. Signed-off-by: Kirill Batuzov <batuzovk@ispras.ru> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-20tcg/mips: Fix regression caused by typo (copy + paste bug)Stefan Weil1-1/+1
cppcheck reports an error: qemu/tcg/mips/tcg-target.c:1487: error: Invalid number of character (() The unpatched code won't compile on mips hosts starting with commit cea5f9a28faa528b6b1b117c9ab2d8828f473fef. Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-16tcg/README: Expand advice on number of TCG ops per target insnPeter Maydell1-1/+9
Expand the note on the number of TCG ops generated per target insn, to be clearer about the range of applicability of the 20 op rule of thumb. Also add a note about the hard MAX_OP_PER_INSTR limit. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-02TCG/PPC: use stack for TCG tempsBlue Swirl2-4/+10
Use stack instead of temp_buf array in CPUState for TCG temps. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-01tcg-hppa: Support deposit opcode.Richard Henderson2-4/+21
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-01TCG/HPPA: use stack for TCG tempsBlue Swirl1-2/+7
Use stack instead of temp_buf array in CPUState for TCG temps. Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-01TCG/HPPA: use TCG_REG_CALL_STACK instead of TCG_REG_SPBlue Swirl1-14/+16
Use TCG_REG_CALL_STACK instead of TCG_REG_SP for consistency. Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-28tcg/ppc64: Remove tcg_out_addimalc1-5/+0
The only user (within tcg.c) was removed Signed-off-by: malc <av1474@comtv.ru>
2011-06-28tcg/ppc: Remove tcg_out_addimalc1-5/+0
The only user (within tcg.c) was removed Signed-off-by: malc <av1474@comtv.ru>
2011-06-26TCG/Sparc64: use stack for TCG tempsBlue Swirl2-3/+6
Use stack instead of temp_buf array in CPUState for TCG temps. On Sparc64, stack pointer is not aligned but there is a fixed bias of 2047, so don't try to enforce alignment. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26TCG/x86: use stack for TCG tempsBlue Swirl1-10/+12
Use stack instead of temp_buf array in CPUState for TCG temps. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26TCG/x86: use TCG_REG_CALL_STACK instead of TCG_REG_ESPBlue Swirl1-4/+4
Except for specific cases where the use of %esp changes the encoding of the instruction, it's cleaner to use TCG_REG_CALL_STACK instead of TCG_REG_ESP. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26TCG: remove broken stack allocation for call argumentsBlue Swirl1-6/+3
The code for stack allocation for call arguments is way too simplistic to actually work on targets with non-trivial stack allocation policies, e.g. ppc64. We've also already allocated TCG_STATIC_CALL_ARGS_SIZE worth of stack for calls which should be well more than any helper needs. Remove broken dynamic stack allocation code and replace it with an assert. Should dynamic stack allocation ever be needed again, target specific functions should be added. Thanks to Richard Henderson for the analysis. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26TCG: fix negative frame offset calculationsBlue Swirl1-3/+7
size_t is unsigned, so the frame offset calculations can be incorrect for negative offsets. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26Delegate setup of TCG temporaries to targetsBlue Swirl9-0/+18
Delegate TCG temp_buf setup to targets, so that they can use a stack frame later instead. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26cpu-exec.c: avoid AREG0 useBlue Swirl10-32/+40
Make functions take a parameter for CPUState instead of relying on global env. Pass CPUState pointer to TCG prologue, which moves it to AREG0. Thanks to Peter Maydell and Laurent Desnogues for the ARM prologue change. Revert the hacks to avoid AREG0 use on Sparc hosts. Move cpu_has_work() and cpu_pc_from_tb() from exec.h to cpu.h. Compile the file without HELPER_CFLAGS. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-26Remove exec-all.h include directivesBlue Swirl1-1/+0
Most exec-all.h include directives are now useless, remove them. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-06-03tcg: Fix unused-but-set-variable warningChristophe Fergeau1-2/+2
Based on a patch from Hans de Goede <hdegoede@redhat.com> This warning is new in gcc 4.6. Acked-by: Amit Shah <amit.shah@redhat.com> Signed-off-by: Christophe Fergeau <cfergeau@redhat.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-06-03tcg: If DEBUG_TCGV, distinguish TCGv_ptr from TCGv_i32/TCGv_i64Peter Maydell2-28/+50
When compiling with DEBUG_TCGV enabled, make the TCGv_ptr type distinct from TCGv_i32/TCGv_i64. This means that using an i32 or i64 TCG op to manipulate a TCGv_ptr will always be detected at compile time, rather than only if compiling on a host system with the other word size. NB: the tcg_add_ptr and tcg_sub_ptr macros have been removed as they were not used anywhere. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-06-03tcg/tcg-op.h: Fix prototypes for ld/st functions on 64 bit hostsPeter Maydell1-11/+11
The prototypes for the ld/st functions on a 64 bit host declared the address parameter as a TCGv_i64 rather than a TCGv_ptr. This worked OK (since the two are aliases), but needs to be fixed to allow extension of TCG type debugging to i64/i32/ptr mismatches. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-06-03Use the correct header in the TCG MIPS code to find cacheflush() on OpenBSD.Brad1-0/+4
Use the correct header in the TCG MIPS code to find cacheflush() on OpenBSD to fix compilation of the MIPS host support for OpenBSD/mips64 based architecures. Signed-off-by: Brad Smith <brad@comstyle.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-05-29Fix spelling in comment (additon -> addition)Stefan Weil1-1/+1
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-05-23tcg: don't keep dead outputs in registersAurelien Jarno1-10/+18
If an op with dead outputs is not removed, because it has side effects or has multiple output and only one dead, mark the registers as dead instead of saving them. This avoid a few register spills on TCG targets with low register count, especially with div2 and mul2 ops, or when a qemu_ld* result is not used (prefetch emulation for example). Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-05-23tcg: mark dead output argument in op_dead_argsAurelien Jarno1-2/+8
If an op is not removed and has dead output arguments, mark it in op_dead_args similarly to what is done for input arguments. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-05-23tcg: replace op_dead_iargs by op_dead_argsAurelien Jarno2-37/+38
Allow all args to be dead by replacing the input specific op_dead_iargs variable by op_dead_args. Note this is a purely mechanical change. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-05-08Fix typos in comments (accross -> across)Stefan Weil1-2/+2
Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-03-24tcg/arm: Support host code being compiled for ThumbPeter Maydell1-9/+26
Although the TCG generated code is always in ARM mode, it is possible that the host code was compiled by gcc in Thumb mode (this is often the default for Linux distributions targeting ARM v7 only). Handle this by using BLX imm when doing a call from ARM into Thumb mode. Since BLX imm is not a conditionalisable instruction, we make tcg_out_call() no longer take a condition code; we were only ever using it with COND_AL anyway. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2011-03-07tcg: Add support for debugging leakage of temporariesPeter Maydell2-0/+49
Add support (if CONFIG_DEBUG_TCG is defined) for debugging leakage of temporary variables. Generally any temporaries created by a target while it is translating an instruction should be freed by the end of that instruction; otherwise carefully crafted guest code could cause TCG to run out of temporaries and assert. By calling tcg_check_temp_count() after each instruction we can check that we are not leaking temporaries in this way. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-01-20tcg: README, name deposit second argument len/LENEdgar E. Iglesias1-2/+2
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-01-20tcg: Define "deposit" as an optional operation.Richard Henderson3-0/+84
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-01-12tcg arm/mips/ia64: add a comment about retranslation and cachesAurelien Jarno3-1/+9
Add a comment about cache coherency and retranslation, so that people developping new targets based on existing ones are warned of the issue. Acked-by: Edgar E. Iglesias <edgar.iglesias@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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