[X86] Add test case to show failure to perform SimplifyDemandedBits on mask of avx2...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@373107 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/avx2-intrinsics-x86.ll b/test/CodeGen/X86/avx2-intrinsics-x86.ll
index aa68cfd70a88ecff179a64802167f5af072a3cdb..17e48762dad838f5340e6df35084b64df4ef393a 100644 (file)
--- a/test/CodeGen/X86/avx2-intrinsics-x86.ll
+++ b/test/CodeGen/X86/avx2-intrinsics-x86.ll
@@ -2192,3 +2192,37 @@ define <8 x float>  @test_gather_mask(<8 x float> %a0, float* %a, <8 x i32> %idx
 
   ret <8 x float> %res
 }
+
+define <2 x i64> @test_mask_demanded_bits(<2 x i64> %a0, i8* %a1, <2 x i64> %idx, <2 x i1> %mask) {
+; X86-AVX-LABEL: test_mask_demanded_bits:
+; X86-AVX:       # %bb.0:
+; X86-AVX-NEXT:    movl {{[0-9]+}}(%esp), %eax # encoding: [0x8b,0x44,0x24,0x04]
+; X86-AVX-NEXT:    vpsllq $63, %xmm2, %xmm2 # encoding: [0xc5,0xe9,0x73,0xf2,0x3f]
+; X86-AVX-NEXT:    vpgatherqq %xmm2, (%eax,%xmm1,2), %xmm0 # encoding: [0xc4,0xe2,0xe9,0x91,0x04,0x48]
+; X86-AVX-NEXT:    retl # encoding: [0xc3]
+;
+; X86-AVX512VL-LABEL: test_mask_demanded_bits:
+; X86-AVX512VL:       # %bb.0:
+; X86-AVX512VL-NEXT:    movl {{[0-9]+}}(%esp), %eax # encoding: [0x8b,0x44,0x24,0x04]
+; X86-AVX512VL-NEXT:    vpsllq $63, %xmm2, %xmm2 # EVEX TO VEX Compression encoding: [0xc5,0xe9,0x73,0xf2,0x3f]
+; X86-AVX512VL-NEXT:    vpsraq $63, %xmm2, %xmm2 # encoding: [0x62,0xf1,0xed,0x08,0x72,0xe2,0x3f]
+; X86-AVX512VL-NEXT:    vpgatherqq %xmm2, (%eax,%xmm1,2), %xmm0 # encoding: [0xc4,0xe2,0xe9,0x91,0x04,0x48]
+; X86-AVX512VL-NEXT:    retl # encoding: [0xc3]
+;
+; X64-AVX-LABEL: test_mask_demanded_bits:
+; X64-AVX:       # %bb.0:
+; X64-AVX-NEXT:    vpsllq $63, %xmm2, %xmm2 # encoding: [0xc5,0xe9,0x73,0xf2,0x3f]
+; X64-AVX-NEXT:    vpgatherqq %xmm2, (%rdi,%xmm1,2), %xmm0 # encoding: [0xc4,0xe2,0xe9,0x91,0x04,0x4f]
+; X64-AVX-NEXT:    retq # encoding: [0xc3]
+;
+; X64-AVX512VL-LABEL: test_mask_demanded_bits:
+; X64-AVX512VL:       # %bb.0:
+; X64-AVX512VL-NEXT:    vpsllq $63, %xmm2, %xmm2 # EVEX TO VEX Compression encoding: [0xc5,0xe9,0x73,0xf2,0x3f]
+; X64-AVX512VL-NEXT:    vpsraq $63, %xmm2, %xmm2 # encoding: [0x62,0xf1,0xed,0x08,0x72,0xe2,0x3f]
+; X64-AVX512VL-NEXT:    vpgatherqq %xmm2, (%rdi,%xmm1,2), %xmm0 # encoding: [0xc4,0xe2,0xe9,0x91,0x04,0x4f]
+; X64-AVX512VL-NEXT:    retq # encoding: [0xc3]
+  %mask1 = sext <2 x i1> %mask to <2 x i64>
+  %res = call <2 x i64> @llvm.x86.avx2.gather.q.q(<2 x i64> %a0,
+                            i8* %a1, <2 x i64> %idx, <2 x i64> %mask1, i8 2) ;
+  ret <2 x i64> %res
+}