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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.

Backports commit 3661612fc3e4b65be03482bf6bafd116101881e1 from qemu
This commit is contained in:
Richard Henderson 2018-12-18 05:21:02 -05:00 committed by Lioncash
parent 85485dc20e
commit a124110db4
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GPG key ID: 4E3C3CC1031BA9C7
1 changed files with 2 additions and 8 deletions
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10
qemu/tcg/s390/tcg-target.inc.c
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@ -1334,13 +1334,11 @@ 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);
} }
@ -1352,13 +1350,11 @@ 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);
} }
@ -1702,7 +1698,6 @@ 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;
@ -1730,7 +1725,6 @@ 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;