[X86] Add ISD node for masked version of CVTPS2PH.

The 128-bit input produces 64-bits of output and fills the upper 64-bits with 0. The mask only applies to the lower elements. But we can't represent this with a vselect like we normally do.

This also avoids the need to have a special X86ISD::SELECT when avx512bw isn't enabled since vselect v8i16 isn't legal there.

Fixes another instruction for PR34877.

llvm-svn: 350994

2 files changed, 17 insertions, 17 deletions

diff --git a/llvm/test/CodeGen/X86/avx512-intrinsics.ll b/llvm/test/CodeGen/X86/avx512-intrinsics.ll
index 9fec17da4b2..2e83817abb6 100644
--- a/llvm/test/CodeGen/X86/avx512-intrinsics.ll
+++ b/llvm/test/CodeGen/X86/avx512-intrinsics.ll
@@ -990,8 +990,8 @@ define <16 x i16> @test_x86_vcvtps2ph_256(<16 x float> %a0, <16 x i16> %src, i16
 ; CHECK-LABEL: test_x86_vcvtps2ph_256:
 ; CHECK:       ## %bb.0:
 ; CHECK-NEXT:    kmovw %edi, %k1
-; CHECK-NEXT:    vcvtps2ph $2, %zmm0, %ymm1 {%k1}
 ; CHECK-NEXT:    vcvtps2ph $2, %zmm0, %ymm2 {%k1} {z}
+; CHECK-NEXT:    vcvtps2ph $2, %zmm0, %ymm1 {%k1}
 ; CHECK-NEXT:    vpaddw %ymm1, %ymm2, %ymm1
 ; CHECK-NEXT:    vcvtps2ph $2, %zmm0, (%rsi)
 ; CHECK-NEXT:    vmovdqa %ymm1, %ymm0
diff --git a/llvm/test/CodeGen/X86/avx512vl-intrinsics.ll b/llvm/test/CodeGen/X86/avx512vl-intrinsics.ll
index 13d08d08353..912715ba909 100644
--- a/llvm/test/CodeGen/X86/avx512vl-intrinsics.ll
+++ b/llvm/test/CodeGen/X86/avx512vl-intrinsics.ll
@@ -4306,21 +4306,21 @@ define <8 x i16> @test_x86_vcvtps2ph_128(<4 x float> %a0, i8 %mask, <8 x i16> %s
 ; X86:       # %bb.0:
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax # encoding: [0x0f,0xb6,0x44,0x24,0x04]
 ; X86-NEXT:    kmovw %eax, %k1 # encoding: [0xc5,0xf8,0x92,0xc8]
+; X86-NEXT:    vcvtps2ph $2, %xmm0, %xmm2 # EVEX TO VEX Compression encoding: [0xc4,0xe3,0x79,0x1d,0xc2,0x02]
+; X86-NEXT:    vcvtps2ph $2, %xmm0, %xmm3 {%k1} {z} # encoding: [0x62,0xf3,0x7d,0x89,0x1d,0xc3,0x02]
 ; X86-NEXT:    vcvtps2ph $2, %xmm0, %xmm1 {%k1} # encoding: [0x62,0xf3,0x7d,0x09,0x1d,0xc1,0x02]
-; X86-NEXT:    vcvtps2ph $2, %xmm0, %xmm2 {%k1} {z} # encoding: [0x62,0xf3,0x7d,0x89,0x1d,0xc2,0x02]
-; X86-NEXT:    vpaddw %xmm1, %xmm2, %xmm1 # encoding: [0xc5,0xe9,0xfd,0xc9]
-; X86-NEXT:    vcvtps2ph $2, %xmm0, %xmm0 # EVEX TO VEX Compression encoding: [0xc4,0xe3,0x79,0x1d,0xc0,0x02]
-; X86-NEXT:    vpaddw %xmm1, %xmm0, %xmm0 # encoding: [0xc5,0xf9,0xfd,0xc1]
+; X86-NEXT:    vpaddw %xmm1, %xmm3, %xmm0 # encoding: [0xc5,0xe1,0xfd,0xc1]
+; X86-NEXT:    vpaddw %xmm0, %xmm2, %xmm0 # encoding: [0xc5,0xe9,0xfd,0xc0]
 ; X86-NEXT:    retl # encoding: [0xc3]
 ;
 ; X64-LABEL: test_x86_vcvtps2ph_128:
 ; X64:       # %bb.0:
 ; X64-NEXT:    kmovw %edi, %k1 # encoding: [0xc5,0xf8,0x92,0xcf]
+; X64-NEXT:    vcvtps2ph $2, %xmm0, %xmm2 # EVEX TO VEX Compression encoding: [0xc4,0xe3,0x79,0x1d,0xc2,0x02]
+; X64-NEXT:    vcvtps2ph $2, %xmm0, %xmm3 {%k1} {z} # encoding: [0x62,0xf3,0x7d,0x89,0x1d,0xc3,0x02]
 ; X64-NEXT:    vcvtps2ph $2, %xmm0, %xmm1 {%k1} # encoding: [0x62,0xf3,0x7d,0x09,0x1d,0xc1,0x02]
-; X64-NEXT:    vcvtps2ph $2, %xmm0, %xmm2 {%k1} {z} # encoding: [0x62,0xf3,0x7d,0x89,0x1d,0xc2,0x02]
-; X64-NEXT:    vpaddw %xmm1, %xmm2, %xmm1 # encoding: [0xc5,0xe9,0xfd,0xc9]
-; X64-NEXT:    vcvtps2ph $2, %xmm0, %xmm0 # EVEX TO VEX Compression encoding: [0xc4,0xe3,0x79,0x1d,0xc0,0x02]
-; X64-NEXT:    vpaddw %xmm1, %xmm0, %xmm0 # encoding: [0xc5,0xf9,0xfd,0xc1]
+; X64-NEXT:    vpaddw %xmm1, %xmm3, %xmm0 # encoding: [0xc5,0xe1,0xfd,0xc1]
+; X64-NEXT:    vpaddw %xmm0, %xmm2, %xmm0 # encoding: [0xc5,0xe9,0xfd,0xc0]
 ; X64-NEXT:    retq # encoding: [0xc3]
   %res1 = call <8 x i16> @llvm.x86.avx512.mask.vcvtps2ph.128(<4 x float> %a0, i32 2, <8 x i16> zeroinitializer, i8 -1)
   %res2 = call <8 x i16> @llvm.x86.avx512.mask.vcvtps2ph.128(<4 x float> %a0, i32 2, <8 x i16> zeroinitializer, i8 %mask)
@@ -4337,22 +4337,22 @@ define <8 x i16> @test_x86_vcvtps2ph_256(<8 x float> %a0, i8 %mask, <8 x i16> %s
 ; X86:       # %bb.0:
 ; X86-NEXT:    movzbl {{[0-9]+}}(%esp), %eax # encoding: [0x0f,0xb6,0x44,0x24,0x04]
 ; X86-NEXT:    kmovw %eax, %k1 # encoding: [0xc5,0xf8,0x92,0xc8]
+; X86-NEXT:    vcvtps2ph $2, %ymm0, %xmm2 # EVEX TO VEX Compression encoding: [0xc4,0xe3,0x7d,0x1d,0xc2,0x02]
+; X86-NEXT:    vcvtps2ph $2, %ymm0, %xmm3 {%k1} {z} # encoding: [0x62,0xf3,0x7d,0xa9,0x1d,0xc3,0x02]
 ; X86-NEXT:    vcvtps2ph $2, %ymm0, %xmm1 {%k1} # encoding: [0x62,0xf3,0x7d,0x29,0x1d,0xc1,0x02]
-; X86-NEXT:    vcvtps2ph $2, %ymm0, %xmm2 {%k1} {z} # encoding: [0x62,0xf3,0x7d,0xa9,0x1d,0xc2,0x02]
-; X86-NEXT:    vpaddw %xmm1, %xmm2, %xmm1 # encoding: [0xc5,0xe9,0xfd,0xc9]
-; X86-NEXT:    vcvtps2ph $2, %ymm0, %xmm0 # EVEX TO VEX Compression encoding: [0xc4,0xe3,0x7d,0x1d,0xc0,0x02]
-; X86-NEXT:    vpaddw %xmm1, %xmm0, %xmm0 # encoding: [0xc5,0xf9,0xfd,0xc1]
+; X86-NEXT:    vpaddw %xmm1, %xmm3, %xmm0 # encoding: [0xc5,0xe1,0xfd,0xc1]
+; X86-NEXT:    vpaddw %xmm0, %xmm2, %xmm0 # encoding: [0xc5,0xe9,0xfd,0xc0]
 ; X86-NEXT:    vzeroupper # encoding: [0xc5,0xf8,0x77]
 ; X86-NEXT:    retl # encoding: [0xc3]
 ;
 ; X64-LABEL: test_x86_vcvtps2ph_256:
 ; X64:       # %bb.0:
 ; X64-NEXT:    kmovw %edi, %k1 # encoding: [0xc5,0xf8,0x92,0xcf]
+; X64-NEXT:    vcvtps2ph $2, %ymm0, %xmm2 # EVEX TO VEX Compression encoding: [0xc4,0xe3,0x7d,0x1d,0xc2,0x02]
+; X64-NEXT:    vcvtps2ph $2, %ymm0, %xmm3 {%k1} {z} # encoding: [0x62,0xf3,0x7d,0xa9,0x1d,0xc3,0x02]
 ; X64-NEXT:    vcvtps2ph $2, %ymm0, %xmm1 {%k1} # encoding: [0x62,0xf3,0x7d,0x29,0x1d,0xc1,0x02]
-; X64-NEXT:    vcvtps2ph $2, %ymm0, %xmm2 {%k1} {z} # encoding: [0x62,0xf3,0x7d,0xa9,0x1d,0xc2,0x02]
-; X64-NEXT:    vpaddw %xmm1, %xmm2, %xmm1 # encoding: [0xc5,0xe9,0xfd,0xc9]
-; X64-NEXT:    vcvtps2ph $2, %ymm0, %xmm0 # EVEX TO VEX Compression encoding: [0xc4,0xe3,0x7d,0x1d,0xc0,0x02]
-; X64-NEXT:    vpaddw %xmm1, %xmm0, %xmm0 # encoding: [0xc5,0xf9,0xfd,0xc1]
+; X64-NEXT:    vpaddw %xmm1, %xmm3, %xmm0 # encoding: [0xc5,0xe1,0xfd,0xc1]
+; X64-NEXT:    vpaddw %xmm0, %xmm2, %xmm0 # encoding: [0xc5,0xe9,0xfd,0xc0]
 ; X64-NEXT:    vzeroupper # encoding: [0xc5,0xf8,0x77]
 ; X64-NEXT:    retq # encoding: [0xc3]
   %res1 = call <8 x i16> @llvm.x86.avx512.mask.vcvtps2ph.256(<8 x float> %a0, i32 2, <8 x i16> zeroinitializer, i8 -1)