From: Adam Nemet <anemet@apple.com>
Date: Tue, 8 Jul 2014 00:22:32 +0000 (+0000)
Subject: [X86] AVX512: Only allow k1-k7 as predicates to vpcmp*
X-Git-Tag: android-x86-7.1-r4~59922
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=f189d9cdf72d6adc2fa515084cf14a33db42721c;p=android-x86%2Fexternal-llvm.git

[X86] AVX512: Only allow k1-k7 as predicates to vpcmp*

As destination k0 is allowed but not as predicate/writemask.

I also modified the test to allow checking of error messages by the assembler.
I applied a similar approach to the test ret.s in the same directory.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212504 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/X86/X86InstrAVX512.td b/lib/Target/X86/X86InstrAVX512.td
index c8b0ecdbe49..41e900ed11a 100644
--- a/lib/Target/X86/X86InstrAVX512.td
+++ b/lib/Target/X86/X86InstrAVX512.td
@@ -873,7 +873,7 @@ def : Pat<(v8i1 (X86pcmpeqm (v8i32 VR256X:$src1), (v8i32 VR256X:$src2))),
             (v16i32 (SUBREG_TO_REG (i32 0), VR256X:$src1, sub_ymm)),
             (v16i32 (SUBREG_TO_REG (i32 0), VR256X:$src2, sub_ymm))), VK8)>;
 
-multiclass avx512_icmp_cc<bits<8> opc, RegisterClass KRC,
+multiclass avx512_icmp_cc<bits<8> opc, RegisterClass WMRC, RegisterClass KRC,
               RegisterClass RC, X86MemOperand x86memop, PatFrag memop_frag, 
               SDNode OpNode, ValueType vt, Operand CC, string Suffix> {
   def rri : AVX512AIi8<opc, MRMSrcReg,
@@ -896,7 +896,7 @@ multiclass avx512_icmp_cc<bits<8> opc, RegisterClass KRC,
                   "\t{$cc, $src2, $src1, $dst|$dst, $src1, $src2, $cc}"),
                [], IIC_SSE_ALU_F32P_RR>, EVEX_4V;
     def rrik_alt : AVX512AIi8<opc, MRMSrcReg,
-               (outs KRC:$dst), (ins KRC:$mask, RC:$src1, RC:$src2, i8imm:$cc),
+               (outs KRC:$dst), (ins WMRC:$mask, RC:$src1, RC:$src2, i8imm:$cc),
                !strconcat("vpcmp", Suffix,
                   "\t{$cc, $src2, $src1, $dst {${mask}}|$dst {${mask}}, $src1, $src2, $cc}"),
                [], IIC_SSE_ALU_F32P_RR>, EVEX_4V, EVEX_K;
@@ -906,24 +906,24 @@ multiclass avx512_icmp_cc<bits<8> opc, RegisterClass KRC,
                   "\t{$cc, $src2, $src1, $dst|$dst, $src1, $src2, $cc}"),
                [], IIC_SSE_ALU_F32P_RM>, EVEX_4V;
     def rmik_alt : AVX512AIi8<opc, MRMSrcMem,
-               (outs KRC:$dst), (ins KRC:$mask, RC:$src1, x86memop:$src2, i8imm:$cc),
+               (outs KRC:$dst), (ins WMRC:$mask, RC:$src1, x86memop:$src2, i8imm:$cc),
                !strconcat("vpcmp", Suffix,
                   "\t{$cc, $src2, $src1, $dst {${mask}}|$dst {${mask}}, $src1, $src2, $cc}"),
                [], IIC_SSE_ALU_F32P_RM>, EVEX_4V, EVEX_K;
   }
 }
 
-defm VPCMPDZ :  avx512_icmp_cc<0x1F, VK16, VR512, i512mem, memopv16i32,
+defm VPCMPDZ :  avx512_icmp_cc<0x1F, VK16WM, VK16, VR512, i512mem, memopv16i32,
                                X86cmpm, v16i32, AVXCC, "d">,
                 EVEX_V512, EVEX_CD8<32, CD8VF>;
-defm VPCMPUDZ : avx512_icmp_cc<0x1E, VK16, VR512, i512mem, memopv16i32,
+defm VPCMPUDZ : avx512_icmp_cc<0x1E, VK16WM, VK16, VR512, i512mem, memopv16i32,
                                X86cmpmu, v16i32, AVXCC, "ud">,
                 EVEX_V512, EVEX_CD8<32, CD8VF>;
 
-defm VPCMPQZ :  avx512_icmp_cc<0x1F, VK8, VR512, i512mem, memopv8i64,
+defm VPCMPQZ :  avx512_icmp_cc<0x1F, VK8WM, VK8, VR512, i512mem, memopv8i64,
                                X86cmpm, v8i64, AVXCC, "q">,
                 VEX_W, EVEX_V512, EVEX_CD8<64, CD8VF>;
-defm VPCMPUQZ : avx512_icmp_cc<0x1E, VK8, VR512, i512mem, memopv8i64,
+defm VPCMPUQZ : avx512_icmp_cc<0x1E, VK8WM, VK8, VR512, i512mem, memopv8i64,
                                X86cmpmu, v8i64, AVXCC, "uq">,
                 VEX_W, EVEX_V512, EVEX_CD8<64, CD8VF>;
 
diff --git a/test/MC/X86/avx512-encodings.s b/test/MC/X86/avx512-encodings.s
index b4be41d5d74..187b51264c4 100644
--- a/test/MC/X86/avx512-encodings.s
+++ b/test/MC/X86/avx512-encodings.s
@@ -1,4 +1,5 @@
-// RUN: llvm-mc -triple x86_64-unknown-unknown -mcpu=knl --show-encoding %s | FileCheck %s
+// RUN: not llvm-mc -triple x86_64-unknown-unknown -mcpu=knl --show-encoding %s 2> %t.err | FileCheck %s
+// RUN: FileCheck --check-prefix=ERR < %t.err %s
 
 // CHECK: vaddpd %zmm6, %zmm27, %zmm8
 // CHECK:  encoding: [0x62,0x71,0xa5,0x40,0x58,0xc6]
@@ -3200,6 +3201,9 @@ vpcmpd $1, %zmm24, %zmm7, %k5{%k4}
 // CHECK: encoding: [0x62,0xf3,0xf5,0x47,0x1e,0x72,0x01,0x02]
 vpcmpuq $2, 0x40(%rdx), %zmm17, %k6{%k7}
 
+// ERR: invalid operand for instruction
+vpcmpd $1, %zmm24, %zmm7, %k5{%k0}
+
 // CHECK: vpermi2d
 // CHECK: encoding: [0x62,0x42,0x6d,0x4b,0x76,0xd6]
 vpermi2d %zmm14, %zmm2, %zmm26 {%k3}