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tcg: Introduce INDEX_op_qemu_st8_i32

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Enable this on i386 to restrict the set of input registers
for an 8-bit store, as required by the architecture.  This
removes the last use of scratch registers for user-only mode.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2020-12-09 13:58:39 -06:00
parent d2ef1b83a7
commit 07ce0b0530
15 changed files with 49 additions and 12 deletions
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1
tcg/ppc/tcg-target.h
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@ -108,6 +108,7 @@ extern bool have_vsx;
#define TCG_TARGET_HAS_mulsh_i32 1
#define TCG_TARGET_HAS_goto_ptr 1
#define TCG_TARGET_HAS_direct_jump 1
#define TCG_TARGET_HAS_qemu_st8_i32 0
#if TCG_TARGET_REG_BITS == 64
#define TCG_TARGET_HAS_add2_i32 0