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[NFC] Added tests for PR52056

This commit is contained in:
Dávid Bolvanský 2021-10-10 11:34:03 +02:00
parent e7fc254875
commit e6ce86bb62
1 changed files with 115 additions and 0 deletions
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115
llvm/test/CodeGen/X86/popcnt.ll
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@ -1465,6 +1465,121 @@ define i128 @cnt128_pgso(i128 %x) nounwind readnone !prof !14 {
ret i128 %cnt
}
define i32 @popcount_zext_i32(i16 zeroext %x) {
; X86-LABEL: popcount_zext_i32:
; X86: # %bb.0:
; X86-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl %eax, %ecx
; X86-NEXT: shrl %ecx
; X86-NEXT: andl $21845, %ecx # imm = 0x5555
; X86-NEXT: subl %ecx, %eax
; X86-NEXT: movl %eax, %ecx
; X86-NEXT: andl $858993459, %ecx # imm = 0x33333333
; X86-NEXT: shrl $2, %eax
; X86-NEXT: andl $858993459, %eax # imm = 0x33333333
; X86-NEXT: addl %ecx, %eax
; X86-NEXT: movl %eax, %ecx
; X86-NEXT: shrl $4, %ecx
; X86-NEXT: addl %eax, %ecx
; X86-NEXT: andl $252645135, %ecx # imm = 0xF0F0F0F
; X86-NEXT: imull $16843009, %ecx, %eax # imm = 0x1010101
; X86-NEXT: shrl $24, %eax
; X86-NEXT: retl
;
; X64-LABEL: popcount_zext_i32:
; X64: # %bb.0:
; X64-NEXT: movl %edi, %eax
; X64-NEXT: shrl %eax
; X64-NEXT: andl $21845, %eax # imm = 0x5555
; X64-NEXT: subl %eax, %edi
; X64-NEXT: movl %edi, %eax
; X64-NEXT: andl $858993459, %eax # imm = 0x33333333
; X64-NEXT: shrl $2, %edi
; X64-NEXT: andl $858993459, %edi # imm = 0x33333333
; X64-NEXT: addl %eax, %edi
; X64-NEXT: movl %edi, %eax
; X64-NEXT: shrl $4, %eax
; X64-NEXT: addl %edi, %eax
; X64-NEXT: andl $252645135, %eax # imm = 0xF0F0F0F
; X64-NEXT: imull $16843009, %eax, %eax # imm = 0x1010101
; X64-NEXT: shrl $24, %eax
; X64-NEXT: retq
;
; X86-POPCNT-LABEL: popcount_zext_i32:
; X86-POPCNT: # %bb.0:
; X86-POPCNT-NEXT: movzwl {{[0-9]+}}(%esp), %eax
; X86-POPCNT-NEXT: popcntl %eax, %eax
; X86-POPCNT-NEXT: retl
;
; X64-POPCNT-LABEL: popcount_zext_i32:
; X64-POPCNT: # %bb.0:
; X64-POPCNT-NEXT: popcntl %edi, %eax
; X64-POPCNT-NEXT: retq
%z = zext i16 %x to i32
%cnt = tail call i32 @llvm.ctpop.i32(i32 %z)
ret i32 %cnt
}
define i32 @popcount_i16_zext(i16 zeroext %x) {
; X86-LABEL: popcount_i16_zext:
; X86: # %bb.0:
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
; X86-NEXT: movl %eax, %ecx
; X86-NEXT: shrl %ecx
; X86-NEXT: andl $21845, %ecx # imm = 0x5555
; X86-NEXT: subl %ecx, %eax
; X86-NEXT: movl %eax, %ecx
; X86-NEXT: andl $13107, %ecx # imm = 0x3333
; X86-NEXT: shrl $2, %eax
; X86-NEXT: andl $13107, %eax # imm = 0x3333
; X86-NEXT: addl %ecx, %eax
; X86-NEXT: movl %eax, %ecx
; X86-NEXT: shrl $4, %ecx
; X86-NEXT: addl %eax, %ecx
; X86-NEXT: andl $3855, %ecx # imm = 0xF0F
; X86-NEXT: movl %ecx, %eax
; X86-NEXT: shll $8, %eax
; X86-NEXT: addl %ecx, %eax
; X86-NEXT: movzbl %ah, %eax
; X86-NEXT: retl
;
; X64-LABEL: popcount_i16_zext:
; X64: # %bb.0:
; X64-NEXT: movl %edi, %eax
; X64-NEXT: shrl %eax
; X64-NEXT: andl $21845, %eax # imm = 0x5555
; X64-NEXT: subl %eax, %edi
; X64-NEXT: movl %edi, %eax
; X64-NEXT: andl $13107, %eax # imm = 0x3333
; X64-NEXT: shrl $2, %edi
; X64-NEXT: andl $13107, %edi # imm = 0x3333
; X64-NEXT: addl %eax, %edi
; X64-NEXT: movl %edi, %eax
; X64-NEXT: shrl $4, %eax
; X64-NEXT: addl %edi, %eax
; X64-NEXT: andl $3855, %eax # imm = 0xF0F
; X64-NEXT: movl %eax, %ecx
; X64-NEXT: shll $8, %ecx
; X64-NEXT: addl %eax, %ecx
; X64-NEXT: movzbl %ch, %eax
; X64-NEXT: retq
;
; X86-POPCNT-LABEL: popcount_i16_zext:
; X86-POPCNT: # %bb.0:
; X86-POPCNT-NEXT: popcntw {{[0-9]+}}(%esp), %ax
; X86-POPCNT-NEXT: movzwl %ax, %eax
; X86-POPCNT-NEXT: retl
;
; X64-POPCNT-LABEL: popcount_i16_zext:
; X64-POPCNT: # %bb.0:
; X64-POPCNT-NEXT: popcntw %di, %ax
; X64-POPCNT-NEXT: movzwl %ax, %eax
; X64-POPCNT-NEXT: retq
%cnt = tail call i16 @llvm.ctpop.i16(i16 %x)
%z = zext i16 %cnt to i32
ret i32 %z
}
declare i8 @llvm.ctpop.i8(i8) nounwind readnone
declare i16 @llvm.ctpop.i16(i16) nounwind readnone
declare i32 @llvm.ctpop.i32(i32) nounwind readnone