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[X86] Add test case to show failure to perform SimplifyDemandedBits on mask of avx2 gather intrinsics when avx512 is enabled. 

llvm-svn: 373107
This commit is contained in:
Craig Topper 2019-09-27 18:23:46 +00:00
parent 269f1bea0d
commit 432a88bf04
1 changed files with 34 additions and 0 deletions
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34
llvm/test/CodeGen/X86/avx2-intrinsics-x86.ll
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@ -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
}