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[NFC][InstCombine] A few more tests for masked merge add/xor -> or with constant mask

llvm-svn: 330325
This commit is contained in:
Roman Lebedev 2018-04-19 13:02:17 +00:00
parent 5367924c20
commit de3c13378a
3 changed files with 208 additions and 3 deletions

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@ -117,6 +117,62 @@ define <3 x i32> @p_constmask_vec_undef(<3 x i32> %x, <3 x i32> %y) {
ret <3 x i32> %ret
}
; ============================================================================ ;
; Constant mask with no common bits set, but common unset bits.
; ============================================================================ ;
define i32 @p_constmask2(i32 %x, i32 %y) {
; CHECK-LABEL: @p_constmask2(
; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 61440
; CHECK-NEXT: [[AND1:%.*]] = and i32 [[Y:%.*]], -65281
; CHECK-NEXT: [[RET:%.*]] = or i32 [[AND]], [[AND1]]
; CHECK-NEXT: ret i32 [[RET]]
;
%and = and i32 %x, 61440
%and1 = and i32 %y, -65281
%ret = add i32 %and, %and1
ret i32 %ret
}
define <2 x i32> @p_constmask2_splatvec(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @p_constmask2_splatvec(
; CHECK-NEXT: [[AND:%.*]] = and <2 x i32> [[X:%.*]], <i32 61440, i32 61440>
; CHECK-NEXT: [[AND1:%.*]] = and <2 x i32> [[Y:%.*]], <i32 -65281, i32 -65281>
; CHECK-NEXT: [[RET:%.*]] = or <2 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <2 x i32> [[RET]]
;
%and = and <2 x i32> %x, <i32 61440, i32 61440>
%and1 = and <2 x i32> %y, <i32 -65281, i32 -65281>
%ret = add <2 x i32> %and, %and1
ret <2 x i32> %ret
}
define <2 x i32> @p_constmask2_vec(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @p_constmask2_vec(
; CHECK-NEXT: [[AND:%.*]] = and <2 x i32> [[X:%.*]], <i32 61440, i32 16711680>
; CHECK-NEXT: [[AND1:%.*]] = and <2 x i32> [[Y:%.*]], <i32 -65281, i32 -16776961>
; CHECK-NEXT: [[RET:%.*]] = add <2 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <2 x i32> [[RET]]
;
%and = and <2 x i32> %x, <i32 61440, i32 16711680>
%and1 = and <2 x i32> %y, <i32 -65281, i32 -16776961>
%ret = add <2 x i32> %and, %and1
ret <2 x i32> %ret
}
define <3 x i32> @p_constmask2_vec_undef(<3 x i32> %x, <3 x i32> %y) {
; CHECK-LABEL: @p_constmask2_vec_undef(
; CHECK-NEXT: [[AND:%.*]] = and <3 x i32> [[X:%.*]], <i32 61440, i32 undef, i32 61440>
; CHECK-NEXT: [[AND1:%.*]] = and <3 x i32> [[Y:%.*]], <i32 -65281, i32 undef, i32 -65281>
; CHECK-NEXT: [[RET:%.*]] = add <3 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <3 x i32> [[RET]]
;
%and = and <3 x i32> %x, <i32 61440, i32 undef, i32 61440>
%and1 = and <3 x i32> %y, <i32 -65281, i32 undef, i32 -65281>
%ret = add <3 x i32> %and, %and1
ret <3 x i32> %ret
}
; ============================================================================ ;
; Commutativity.
; ============================================================================ ;
@ -340,7 +396,20 @@ define i32 @n3_constmask_badmask(i32 %x, i32 %y) {
; CHECK-NEXT: ret i32 [[RET]]
;
%and = and i32 %x, 65280
%and1 = and i32 %y, -65280 ; not -65281
%and1 = and i32 %y, -65280 ; not -65281, so they have one common bit set
%ret = add i32 %and, %and1
ret i32 %ret
}
define i32 @n3_constmask_samemask(i32 %x, i32 %y) {
; CHECK-LABEL: @n3_constmask_samemask(
; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 65280
; CHECK-NEXT: [[AND1:%.*]] = and i32 [[Y:%.*]], 65280
; CHECK-NEXT: [[RET:%.*]] = add nuw nsw i32 [[AND]], [[AND1]]
; CHECK-NEXT: ret i32 [[RET]]
;
%and = and i32 %x, 65280
%and1 = and i32 %y, 65280 ; both masks are the same
%ret = add i32 %and, %and1
ret i32 %ret
}

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@ -117,6 +117,62 @@ define <3 x i32> @p_constmask_vec_undef(<3 x i32> %x, <3 x i32> %y) {
ret <3 x i32> %ret
}
; ============================================================================ ;
; Constant mask with no common bits set, but common unset bits.
; ============================================================================ ;
define i32 @p_constmask2(i32 %x, i32 %y) {
; CHECK-LABEL: @p_constmask2(
; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 61440
; CHECK-NEXT: [[AND1:%.*]] = and i32 [[Y:%.*]], -65281
; CHECK-NEXT: [[RET:%.*]] = or i32 [[AND]], [[AND1]]
; CHECK-NEXT: ret i32 [[RET]]
;
%and = and i32 %x, 61440
%and1 = and i32 %y, -65281
%ret = or i32 %and, %and1
ret i32 %ret
}
define <2 x i32> @p_constmask2_splatvec(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @p_constmask2_splatvec(
; CHECK-NEXT: [[AND:%.*]] = and <2 x i32> [[X:%.*]], <i32 61440, i32 61440>
; CHECK-NEXT: [[AND1:%.*]] = and <2 x i32> [[Y:%.*]], <i32 -65281, i32 -65281>
; CHECK-NEXT: [[RET:%.*]] = or <2 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <2 x i32> [[RET]]
;
%and = and <2 x i32> %x, <i32 61440, i32 61440>
%and1 = and <2 x i32> %y, <i32 -65281, i32 -65281>
%ret = or <2 x i32> %and, %and1
ret <2 x i32> %ret
}
define <2 x i32> @p_constmask2_vec(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @p_constmask2_vec(
; CHECK-NEXT: [[AND:%.*]] = and <2 x i32> [[X:%.*]], <i32 61440, i32 16711680>
; CHECK-NEXT: [[AND1:%.*]] = and <2 x i32> [[Y:%.*]], <i32 -65281, i32 -16776961>
; CHECK-NEXT: [[RET:%.*]] = or <2 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <2 x i32> [[RET]]
;
%and = and <2 x i32> %x, <i32 61440, i32 16711680>
%and1 = and <2 x i32> %y, <i32 -65281, i32 -16776961>
%ret = or <2 x i32> %and, %and1
ret <2 x i32> %ret
}
define <3 x i32> @p_constmask2_vec_undef(<3 x i32> %x, <3 x i32> %y) {
; CHECK-LABEL: @p_constmask2_vec_undef(
; CHECK-NEXT: [[AND:%.*]] = and <3 x i32> [[X:%.*]], <i32 61440, i32 undef, i32 61440>
; CHECK-NEXT: [[AND1:%.*]] = and <3 x i32> [[Y:%.*]], <i32 -65281, i32 undef, i32 -65281>
; CHECK-NEXT: [[RET:%.*]] = or <3 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <3 x i32> [[RET]]
;
%and = and <3 x i32> %x, <i32 61440, i32 undef, i32 61440>
%and1 = and <3 x i32> %y, <i32 -65281, i32 undef, i32 -65281>
%ret = or <3 x i32> %and, %and1
ret <3 x i32> %ret
}
; ============================================================================ ;
; Commutativity.
; ============================================================================ ;
@ -340,7 +396,19 @@ define i32 @n3_constmask_badmask(i32 %x, i32 %y) {
; CHECK-NEXT: ret i32 [[RET]]
;
%and = and i32 %x, 65280
%and1 = and i32 %y, -65280 ; not -65281
%and1 = and i32 %y, -65280 ; not -65281, so they have one common bit
%ret = or i32 %and, %and1
ret i32 %ret
}
define i32 @n3_constmask_samemask(i32 %x, i32 %y) {
; CHECK-LABEL: @n3_constmask_samemask(
; CHECK-NEXT: [[AND2:%.*]] = or i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[RET:%.*]] = and i32 [[AND2]], 65280
; CHECK-NEXT: ret i32 [[RET]]
;
%and = and i32 %x, 65280
%and1 = and i32 %y, 65280 ; both masks are the same
%ret = or i32 %and, %and1
ret i32 %ret
}

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@ -117,6 +117,62 @@ define <3 x i32> @p_constmask_vec_undef(<3 x i32> %x, <3 x i32> %y) {
ret <3 x i32> %ret
}
; ============================================================================ ;
; Constant mask with no common bits set, but common unset bits.
; ============================================================================ ;
define i32 @p_constmask2(i32 %x, i32 %y) {
; CHECK-LABEL: @p_constmask2(
; CHECK-NEXT: [[AND:%.*]] = and i32 [[X:%.*]], 61440
; CHECK-NEXT: [[AND1:%.*]] = and i32 [[Y:%.*]], -65281
; CHECK-NEXT: [[RET1:%.*]] = or i32 [[AND]], [[AND1]]
; CHECK-NEXT: ret i32 [[RET1]]
;
%and = and i32 %x, 61440
%and1 = and i32 %y, -65281
%ret = xor i32 %and, %and1
ret i32 %ret
}
define <2 x i32> @p_constmask2_splatvec(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @p_constmask2_splatvec(
; CHECK-NEXT: [[AND:%.*]] = and <2 x i32> [[X:%.*]], <i32 61440, i32 61440>
; CHECK-NEXT: [[AND1:%.*]] = and <2 x i32> [[Y:%.*]], <i32 -65281, i32 -65281>
; CHECK-NEXT: [[RET1:%.*]] = or <2 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <2 x i32> [[RET1]]
;
%and = and <2 x i32> %x, <i32 61440, i32 61440>
%and1 = and <2 x i32> %y, <i32 -65281, i32 -65281>
%ret = xor <2 x i32> %and, %and1
ret <2 x i32> %ret
}
define <2 x i32> @p_constmask2_vec(<2 x i32> %x, <2 x i32> %y) {
; CHECK-LABEL: @p_constmask2_vec(
; CHECK-NEXT: [[AND:%.*]] = and <2 x i32> [[X:%.*]], <i32 61440, i32 16711680>
; CHECK-NEXT: [[AND1:%.*]] = and <2 x i32> [[Y:%.*]], <i32 -65281, i32 -16776961>
; CHECK-NEXT: [[RET:%.*]] = xor <2 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <2 x i32> [[RET]]
;
%and = and <2 x i32> %x, <i32 61440, i32 16711680>
%and1 = and <2 x i32> %y, <i32 -65281, i32 -16776961>
%ret = xor <2 x i32> %and, %and1
ret <2 x i32> %ret
}
define <3 x i32> @p_constmask2_vec_undef(<3 x i32> %x, <3 x i32> %y) {
; CHECK-LABEL: @p_constmask2_vec_undef(
; CHECK-NEXT: [[AND:%.*]] = and <3 x i32> [[X:%.*]], <i32 61440, i32 undef, i32 61440>
; CHECK-NEXT: [[AND1:%.*]] = and <3 x i32> [[Y:%.*]], <i32 -65281, i32 undef, i32 -65281>
; CHECK-NEXT: [[RET:%.*]] = xor <3 x i32> [[AND]], [[AND1]]
; CHECK-NEXT: ret <3 x i32> [[RET]]
;
%and = and <3 x i32> %x, <i32 61440, i32 undef, i32 61440>
%and1 = and <3 x i32> %y, <i32 -65281, i32 undef, i32 -65281>
%ret = xor <3 x i32> %and, %and1
ret <3 x i32> %ret
}
; ============================================================================ ;
; Commutativity.
; ============================================================================ ;
@ -340,7 +396,19 @@ define i32 @n3_constmask_badmask(i32 %x, i32 %y) {
; CHECK-NEXT: ret i32 [[RET]]
;
%and = and i32 %x, 65280
%and1 = and i32 %y, -65280 ; not -65281
%and1 = and i32 %y, -65280 ; not -65281, so they have one common bit
%ret = xor i32 %and, %and1
ret i32 %ret
}
define i32 @n3_constmask_samemask(i32 %x, i32 %y) {
; CHECK-LABEL: @n3_constmask_samemask(
; CHECK-NEXT: [[AND2:%.*]] = xor i32 [[X:%.*]], [[Y:%.*]]
; CHECK-NEXT: [[RET:%.*]] = and i32 [[AND2]], 65280
; CHECK-NEXT: ret i32 [[RET]]
;
%and = and i32 %x, 65280
%and1 = and i32 %y, 65280 ; both masks are the same
%ret = xor i32 %and, %and1
ret i32 %ret
}