src/arm/disasm-arm.cc - Issue 2885002: ARM: Use the vsqrt instruction when available...

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Unified Diff: src/arm/disasm-arm.cc

Issue 2885002: ARM: Use the vsqrt instruction when available... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/

Patch Set: '' Created 10 years, 6 months ago

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Index: src/arm/disasm-arm.cc

===================================================================

--- src/arm/disasm-arm.cc (revision 4973)

+++ src/arm/disasm-arm.cc (working copy)

@@ -1038,7 +1038,8 @@

// Dd = vmul(Dn, Dm)

// Dd = vdiv(Dn, Dm)

// vcmp(Dd, Dm)

-// VMRS

+// vmrs

+// Dd = vsqrt(Dm)

void Decoder::DecodeTypeVFP(Instr* instr) {

ASSERT((instr->TypeField() == 7) && (instr->Bit(24) == 0x0) );

ASSERT(instr->Bits(11, 9) == 0x5);

@@ -1056,6 +1057,8 @@

} else if (((instr->Opc2Field() == 0x4) || (instr->Opc2Field() == 0x5)) &&

(instr->Opc3Field() & 0x1)) {

DecodeVCMP(instr);

+ } else if (((instr->Opc2Field() == 0x1)) && (instr->Opc3Field() == 0x3)) {

+ Format(instr, "vsqrt.f64'cond 'Dd, 'Dm");

} else {

Unknown(instr); // Not used by V8.

}

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