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Save and restore used non-volatile XMM registers in prologue and epilogue.

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We currently save only "single double" part of the registers using
"movsd" instruction. In general, we should save and restore the whole XMM
registers.
This commit is contained in:
Dmitry Stogov 2023-02-28 18:12:29 +03:00
parent 6b19fdb94f
commit e2810c070e
1 changed files with 8 additions and 2 deletions
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10
ir_x86.dasc
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@ -2061,7 +2061,10 @@ static void ir_emit_prologue(ir_ctx *ctx)
offset -= sizeof(void*);
| mov aword [Ra(fp)+offset], Ra(i)
} else {
IR_ASSERT(0 && "NIY FP register saing");
ir_reg fp = (ctx->flags & IR_USE_FRAME_POINTER) ? IR_REG_FRAME_POINTER : IR_REG_STACK_POINTER;
offset -= sizeof(void*);
| movsd qword [Ra(fp)+offset], xmm(i-IR_REG_FP_FIRST)
}
}
}
@ -2090,7 +2093,10 @@ static void ir_emit_epilogue(ir_ctx *ctx)
offset -= sizeof(void*);
| mov Ra(i), aword [Ra(fp)+offset]
} else {
IR_ASSERT(0 && "NIY FP register saing");
ir_reg fp = (ctx->flags & IR_USE_FRAME_POINTER) ? IR_REG_FRAME_POINTER : IR_REG_STACK_POINTER;
offset -= sizeof(void*);
| movsd xmm(i-IR_REG_FP_FIRST), qword [Ra(fp)+offset]
}
}
}