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AVX-512: fixed a bug in EVEX encoding (the bug appeared after r200624)

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200837 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Elena Demikhovsky 2014-02-05 13:03:01 +00:00
parent cf4061a601
commit 1ee5ca7005
2 changed files with 8 additions and 2 deletions
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6
lib/Target/X86/MCTargetDesc/X86MCCodeEmitter.cpp
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@ -184,7 +184,7 @@ static bool isDisp8(int Value) {
/// isCDisp8 - Return true if this signed displacement fits in a 8-bit
/// compressed dispacement field.
static bool isCDisp8(uint64_t TSFlags, int Value, int& CValue) {
assert(((TSFlags >> X86II::VEXShift) & X86II::EVEX) &&
assert((TSFlags & X86II::EncodingMask) >> X86II::EncodingShift == X86II::EVEX &&
"Compressed 8-bit displacement is only valid for EVEX inst.");
unsigned CD8E = (TSFlags >> X86II::EVEX_CD8EShift) & X86II::EVEX_CD8EMask;
@ -386,7 +386,9 @@ void X86MCCodeEmitter::EmitMemModRMByte(const MCInst &MI, unsigned Op,
const MCOperand &Scale = MI.getOperand(Op+X86::AddrScaleAmt);
const MCOperand &IndexReg = MI.getOperand(Op+X86::AddrIndexReg);
unsigned BaseReg = Base.getReg();
bool HasEVEX = (TSFlags >> X86II::VEXShift) & X86II::EVEX;
unsigned char Encoding = (TSFlags & X86II::EncodingMask) >>
X86II::EncodingShift;
bool HasEVEX = (Encoding == X86II::EVEX);
// Handle %rip relative addressing.
if (BaseReg == X86::RIP) { // [disp32+RIP] in X86-64 mode

4
test/MC/X86/avx512-encodings.s
View File

@ -43,3 +43,7 @@ vpbroadcastd %xmm0, %zmm1 {%k1} {z}
// CHECK: vmovdqu64 {{.*}} {%k3}
// CHECK: encoding: [0x62,0xf1,0xfe,0x4b,0x6f,0xc8]
vmovdqu64 %zmm0, %zmm1 {%k3}
// CHECK: vmovd
// CHECK: encoding: [0x62,0xe1,0x7d,0x08,0x7e,0xb4,0x24,0xac,0xff,0xff,0xff]
vmovd %xmm22, -84(%rsp)