haraldwolff/qemu-patch-raspberry4
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tcg/s390: Remove retranslation code

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There is no longer a need for preserving branch offset operands,
as we no longer re-translate.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2018-11-30 19:28:51 +00:00
parent f9c7246faa
commit 3661612fc3
1 changed files with 2 additions and 8 deletions
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10
tcg/s390/tcg-target.inc.c
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@ -1329,13 +1329,11 @@ static void tgen_branch(TCGContext *s, int cc, TCGLabel *l)
static void tgen_compare_branch(TCGContext *s, S390Opcode opc, int cc, static void tgen_compare_branch(TCGContext *s, S390Opcode opc, int cc,
TCGReg r1, TCGReg r2, TCGLabel *l) TCGReg r1, TCGReg r2, TCGLabel *l)
{ {
intptr_t off; intptr_t off = 0;
if (l->has_value) { if (l->has_value) {
off = l->u.value_ptr - s->code_ptr; off = l->u.value_ptr - s->code_ptr;
} else { } else {
/* We need to keep the offset unchanged for retranslation. */
off = s->code_ptr[1];
tcg_out_reloc(s, s->code_ptr + 1, R_390_PC16DBL, l, 2); tcg_out_reloc(s, s->code_ptr + 1, R_390_PC16DBL, l, 2);
} }
@ -1347,13 +1345,11 @@ static void tgen_compare_branch(TCGContext *s, S390Opcode opc, int cc,
static void tgen_compare_imm_branch(TCGContext *s, S390Opcode opc, int cc, static void tgen_compare_imm_branch(TCGContext *s, S390Opcode opc, int cc,
TCGReg r1, int i2, TCGLabel *l) TCGReg r1, int i2, TCGLabel *l)
{ {
tcg_target_long off; tcg_target_long off = 0;
if (l->has_value) { if (l->has_value) {
off = l->u.value_ptr - s->code_ptr; off = l->u.value_ptr - s->code_ptr;
} else { } else {
/* We need to keep the offset unchanged for retranslation. */
off = s->code_ptr[1];
tcg_out_reloc(s, s->code_ptr + 1, R_390_PC16DBL, l, 2); tcg_out_reloc(s, s->code_ptr + 1, R_390_PC16DBL, l, 2);
} }
@ -1696,7 +1692,6 @@ static void tcg_out_qemu_ld(TCGContext* s, TCGReg data_reg, TCGReg addr_reg,
base_reg = tcg_out_tlb_read(s, addr_reg, opc, mem_index, 1); base_reg = tcg_out_tlb_read(s, addr_reg, opc, mem_index, 1);
/* We need to keep the offset unchanged for retranslation. */
tcg_out16(s, RI_BRC | (S390_CC_NE << 4)); tcg_out16(s, RI_BRC | (S390_CC_NE << 4));
label_ptr = s->code_ptr; label_ptr = s->code_ptr;
s->code_ptr += 1; s->code_ptr += 1;
@ -1724,7 +1719,6 @@ static void tcg_out_qemu_st(TCGContext* s, TCGReg data_reg, TCGReg addr_reg,
base_reg = tcg_out_tlb_read(s, addr_reg, opc, mem_index, 0); base_reg = tcg_out_tlb_read(s, addr_reg, opc, mem_index, 0);
/* We need to keep the offset unchanged for retranslation. */
tcg_out16(s, RI_BRC | (S390_CC_NE << 4)); tcg_out16(s, RI_BRC | (S390_CC_NE << 4));
label_ptr = s->code_ptr; label_ptr = s->code_ptr;
s->code_ptr += 1; s->code_ptr += 1;