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tcg/s390x: Remove USE_LONG_BRANCHES

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The size of a compiled TB is limited by the uint16_t used by
gen_insn_end_off[] -- there is no need for a 32-bit branch.

Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2022-12-07 15:44:33 +00:00
parent 6bd739ed37
commit 0a3afe09cb
1 changed files with 0 additions and 9 deletions
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9
tcg/s390x/tcg-target.c.inc
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@ -33,11 +33,6 @@
#include "../tcg-pool.c.inc" #include "../tcg-pool.c.inc"
#include "elf.h" #include "elf.h"
/* ??? The translation blocks produced by TCG are generally small enough to
be entirely reachable with a 16-bit displacement. Leaving the option for
a 32-bit displacement here Just In Case. */
#define USE_LONG_BRANCHES 0
#define TCG_CT_CONST_S16 0x100 #define TCG_CT_CONST_S16 0x100
#define TCG_CT_CONST_S32 0x200 #define TCG_CT_CONST_S32 0x200
#define TCG_CT_CONST_S33 0x400 #define TCG_CT_CONST_S33 0x400
@ -1525,10 +1520,6 @@ static void tgen_branch(TCGContext *s, int cc, TCGLabel *l)
{ {
if (l->has_value) { if (l->has_value) {
tgen_gotoi(s, cc, l->u.value_ptr); tgen_gotoi(s, cc, l->u.value_ptr);
} else if (USE_LONG_BRANCHES) {
tcg_out16(s, RIL_BRCL | (cc << 4));
tcg_out_reloc(s, s->code_ptr, R_390_PC32DBL, l, 2);
s->code_ptr += 2;
} else { } else {
tcg_out16(s, RI_BRC | (cc << 4)); tcg_out16(s, RI_BRC | (cc << 4));
tcg_out_reloc(s, s->code_ptr, R_390_PC16DBL, l, 2); tcg_out_reloc(s, s->code_ptr, R_390_PC16DBL, l, 2);