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tcg: Canonicalize alignment flags in MemOp 

Having observed e.g. al8+leq in dumps, canonicalize to al+leq.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-08-04 08:26:30 +03:00
parent d2ba802657
commit 76e366e728
1 changed files with 6 additions and 1 deletions
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7
tcg/tcg-op.c
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@ -2765,7 +2765,12 @@ void tcg_gen_lookup_and_goto_ptr(void)
static inline MemOp tcg_canonicalize_memop(MemOp op, bool is64, bool st)
{
/* Trigger the asserts within as early as possible. */
(void)get_alignment_bits(op);
unsigned a_bits = get_alignment_bits(op);
/* Prefer MO_ALIGN+MO_XX over MO_ALIGN_XX+MO_XX */
if (a_bits == (op & MO_SIZE)) {
op = (op & ~MO_AMASK) | MO_ALIGN;
}
switch (op & MO_SIZE) {
case MO_8: