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qemu/include/tcg
Richard Henderson 6b8abd244b tcg: Introduce the 'z' constraint for a hardware zero register
For loongarch, mips, riscv and sparc, a zero register is
available all the time.  For aarch64, register index 31
depends on context: sometimes it is the stack pointer,
and sometimes it is the zero register.

Introduce a new general-purpose constraint which maps 0
to TCG_REG_ZERO, if defined.  This differs from existing
constant constraints in that const_arg[*] is recorded as
false, indicating that the value is in a register.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
4 days ago
..
debug-assert.h tcg: Split out tcg/debug-assert.h 2 years ago
debuginfo.h accel/tcg: Move perf and debuginfo support to tcg/ 1 year ago
helper-info.h tcg: Make tcg/helper-info.h self-contained 10 months ago
insn-start-words.h tcg: Add insn_start_words to TCGContext 2 years ago
perf.h accel/tcg: Move perf and debuginfo support to tcg/ 1 year ago
startup.h tcg: Split out tcg init functions to tcg/startup.h 1 year ago
tcg-cond.h tcg: Introduce TCG_COND_TST{EQ,NE} 1 year ago
tcg-gvec-desc.h tcg: Adjust simd_desc size encoding 4 years ago
tcg-ldst.h accel/tcg: Widen tcg-ldst.h addresses to uint64_t 2 years ago
tcg-mo.h
tcg-op-common.h tcg: Remove INDEX_op_plugin_cb_{start,end} 10 months ago
tcg-op-gvec-common.h tcg: Add write_aofs to GVecGen3i 10 months ago
tcg-op-gvec.h tcg: Split tcg/tcg-op-gvec.h 2 years ago
tcg-op.h tcg: Export tcg_gen_ext_{i32,i64,tl} 1 year ago
tcg-opc.h tcg: Merge INDEX_op_qemu_*_{a32,a64}_* 4 days ago
tcg-temp-internal.h tcg: Reset free_temps before tcg_optimize 2 months ago
tcg.h tcg: Introduce the 'z' constraint for a hardware zero register 4 days ago