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Minimize usage of result register

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This commit is contained in:
Stanislav Shwartsman 2007-04-19 19:09:52 +00:00
parent 1c3e703394
commit 55365ba713
1 changed files with 17 additions and 17 deletions
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34
bochs/cpu/sse_pfp.cc
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@ -1,5 +1,5 @@
/////////////////////////////////////////////////////////////////////////
// $Id: sse_pfp.cc,v 1.31 2007-04-19 18:50:57 sshwarts Exp $
// $Id: sse_pfp.cc,v 1.32 2007-04-19 19:09:52 sshwarts Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2003 Stanislav Shwartsman
@ -1220,7 +1220,7 @@ void BX_CPU_C::SQRTPS_VpsWps(bxInstruction_c *i)
#if BX_SUPPORT_SSE >= 1
BX_CPU_THIS_PTR prepareSSE();
BxPackedXmmRegister op, result;
BxPackedXmmRegister op;
/* op is a register or memory reference */
if (i->modC0()) {
@ -1242,13 +1242,13 @@ void BX_CPU_C::SQRTPS_VpsWps(bxInstruction_c *i)
op.xmm32u(3) = handleDAZ(op.xmm32u(3));
}
result.xmm32u(0) = float32_sqrt(op.xmm32u(0), status_word);
result.xmm32u(1) = float32_sqrt(op.xmm32u(1), status_word);
result.xmm32u(2) = float32_sqrt(op.xmm32u(2), status_word);
result.xmm32u(3) = float32_sqrt(op.xmm32u(3), status_word);
op.xmm32u(0) = float32_sqrt(op.xmm32u(0), status_word);
op.xmm32u(1) = float32_sqrt(op.xmm32u(1), status_word);
op.xmm32u(2) = float32_sqrt(op.xmm32u(2), status_word);
op.xmm32u(3) = float32_sqrt(op.xmm32u(3), status_word);
BX_CPU_THIS_PTR check_exceptionsSSE(status_word.float_exception_flags);
BX_WRITE_XMM_REG(i->nnn(), result);
BX_WRITE_XMM_REG(i->nnn(), op);
#else
BX_INFO(("SQRTPS_VpsWps: required SSE, use --enable-sse option"));
@ -1266,7 +1266,7 @@ void BX_CPU_C::SQRTPD_VpdWpd(bxInstruction_c *i)
#if BX_SUPPORT_SSE >= 2
BX_CPU_THIS_PTR prepareSSE();
BxPackedXmmRegister op, result;
BxPackedXmmRegister op;
/* op is a register or memory reference */
if (i->modC0()) {
@ -1286,11 +1286,11 @@ void BX_CPU_C::SQRTPD_VpdWpd(bxInstruction_c *i)
op.xmm64u(1) = handleDAZ(op.xmm64u(1));
}
result.xmm64u(0) = float64_sqrt(op.xmm64u(0), status_word);
result.xmm64u(1) = float64_sqrt(op.xmm64u(1), status_word);
op.xmm64u(0) = float64_sqrt(op.xmm64u(0), status_word);
op.xmm64u(1) = float64_sqrt(op.xmm64u(1), status_word);
BX_CPU_THIS_PTR check_exceptionsSSE(status_word.float_exception_flags);
BX_WRITE_XMM_REG(i->nnn(), result);
BX_WRITE_XMM_REG(i->nnn(), op);
#else
BX_INFO(("SQRTPD_VpdWpd: required SSE2, use --enable-sse option"));
@ -1308,7 +1308,7 @@ void BX_CPU_C::SQRTSD_VsdWsd(bxInstruction_c *i)
#if BX_SUPPORT_SSE >= 2
BX_CPU_THIS_PTR prepareSSE();
float64 op, result;
float64 op;
/* op is a register or memory reference */
if (i->modC0()) {
@ -1322,9 +1322,9 @@ void BX_CPU_C::SQRTSD_VsdWsd(bxInstruction_c *i)
float_status_t status_word;
mxcsr_to_softfloat_status_word(status_word, MXCSR);
if (MXCSR.get_DAZ()) op = handleDAZ(op);
result = float64_sqrt(op, status_word);
op = float64_sqrt(op, status_word);
BX_CPU_THIS_PTR check_exceptionsSSE(status_word.float_exception_flags);
BX_WRITE_XMM_REG_LO_QWORD(i->nnn(), result);
BX_WRITE_XMM_REG_LO_QWORD(i->nnn(), op);
#else
BX_INFO(("SQRTSD_VsdWsd: required SSE2, use --enable-sse option"));
@ -1342,7 +1342,7 @@ void BX_CPU_C::SQRTSS_VssWss(bxInstruction_c *i)
#if BX_SUPPORT_SSE >= 1
BX_CPU_THIS_PTR prepareSSE();
float32 op, result;
float32 op;
/* op is a register or memory reference */
if (i->modC0()) {
@ -1356,9 +1356,9 @@ void BX_CPU_C::SQRTSS_VssWss(bxInstruction_c *i)
float_status_t status_word;
mxcsr_to_softfloat_status_word(status_word, MXCSR);
if (MXCSR.get_DAZ()) op = handleDAZ(op);
result = float32_sqrt(op, status_word);
op = float32_sqrt(op, status_word);
BX_CPU_THIS_PTR check_exceptionsSSE(status_word.float_exception_flags);
BX_WRITE_XMM_REG_LO_DWORD(i->nnn(), result);
BX_WRITE_XMM_REG_LO_DWORD(i->nnn(), op);
#else
BX_INFO(("SQRTSS_VssWss: required SSE, use --enable-sse option"));