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  tci
LICENSE 146 Bytes
README 15.2 kB
TODO 394 Bytes
optimize.c 25.1 kB
tcg-op.h 79.5 kB
tcg-opc.h 9.6 kB
tcg-runtime.h 706 Bytes
tcg.c 75.6 kB
tcg.h 17.5 kB

Latest revisions

# Date Author Comment
b18212c6 09/22/2012 05:52 pm Stefan Weil

tcg/i386: Add shortcuts for registers used in L constraint

While 64 bit hosts use the first three registers which are also used
as function input parameters, 32 bit hosts use TCG_REG_EAX and
TCG_REG_EDX which are not used in parameter passing.

After defining new register macros for the registers used in L...
d73685e3 09/22/2012 05:52 pm Stefan Weil

tcg/i386: Remove unused registers from tcg_target_call_iarg_regs

32 bit x86 hosts don't need registers for helper function arguments
because they use the default stack based calling convention.

Removing the registers allows simpler code for function
tcg_target_get_call_iarg_regs_count....
f0da3757 09/22/2012 04:10 pm Richard Henderson

tcg-hppa: Implement movcond

Signed-off-by: Richard Henderson <>
Signed-off-by: Aurelien Jarno <>
9bacf414 09/22/2012 04:10 pm Max Filippov

tcg/README: document tcg_gen_goto_tb restrictions

See
http://lists.nongnu.org/archive/html/qemu-devel/2012-09/msg03196.html
for the whole story.

Signed-off-by: Max Filippov <>
Signed-off-by: Aurelien Jarno <>
1b7621ad 09/22/2012 04:10 pm Stefan Weil

w64: Fix TCG helper functions with 5 arguments

TCG uses 6 registers for function arguments on 64 bit Linux hosts,
but only 4 registers on W64 hosts.

Commit 2999a0b20074a7e4a58f56572bb1436749368f59 increased the number
of arguments for some important helper functions from 4 to 5...
3c94193e 09/22/2012 04:10 pm Aurelien Jarno

tcg/optimize: optimize "op r, a, a => movi r, 0"

Now that it's possible to detect copies, we can optimize the case
the "op r, a, a => movi r, 0". This helps in the computation of
overflow flags when one of the two args is 0.

Reviewed-by: Richard Henderson <>...
b336ceb6 09/22/2012 04:10 pm Aurelien Jarno

tcg/optimize: further optimize brcond/movcond/setcond

When both argument of brcond/movcond/setcond are the same or when one
of the two values is a constant equal to zero, it's possible to do
further optimizations.

Reviewed-by: Richard Henderson <>...
c2b0e2fe 09/22/2012 04:10 pm Aurelien Jarno

tcg/optimize: prefer the "op a, a, b" form for commutative ops

The "op a, a, b" form is better handled on non-RISC host than the "op
a, b, a" form, so swap the arguments to this form when possible, and
when b is not a constant.

This reduces the number of generated instructions by a tiny bit....
fba3161f 09/22/2012 04:10 pm Aurelien Jarno

tcg: remove #ifdef #endif around TCGOpcode tests

Commit 25c4d9cc changed all TCGOpcode enums to be available, so we don't
need to #ifdef #endif the one that are available only on some targets.
This makes the code easier to read.

Reviewed-by: Richard Henderson <>...
7ef55fc9 09/22/2012 04:10 pm Aurelien Jarno

tcg/optimize: add constant folding for deposit

Reviewed-by: Richard Henderson <>
Signed-off-by: Aurelien Jarno <>

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