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[InstructionSimplify] Add support for saturating add/sub
Add support for saturating add/sub in InstructionSimplify. In particular, the following simplifications are supported:
sat(X + 0) -> X
sat(X + undef) -> -1
sat(X uadd MAX) -> MAX
(and commutative variants)
sat(X - 0) -> X
sat(X - X) -> 0
sat(X - undef) -> 0
sat(undef - X) -> 0
sat(0 usub X) -> 0
sat(X usub MAX) -> 0
Patch by: @nikic (Nikita Popov)
Differential Revision: https://reviews.llvm.org/D54532
llvm-svn: 347330
This commit is contained in:
Sanjay Patel
parent
fe6564f03f
commit
c0e2bfb7a2
@ -4912,6 +4912,40 @@ static Value *simplifyBinaryIntrinsic(Function *F, Value *Op0, Value *Op1,
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if (match(Op0, m_Undef()) || match(Op1, m_Undef()))
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return Constant::getNullValue(ReturnType);
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break;
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case Intrinsic::uadd_sat:
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// sat(MAX + X) -> MAX
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// sat(X + MAX) -> MAX
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if (match(Op0, m_AllOnes()) || match(Op1, m_AllOnes()))
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return Constant::getAllOnesValue(ReturnType);
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LLVM_FALLTHROUGH;
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case Intrinsic::sadd_sat:
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// sat(X + undef) -> -1
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// sat(undef + X) -> -1
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// For unsigned: Assume undef is MAX, thus we saturate to MAX (-1).
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// For signed: Assume undef is ~X, in which case X + ~X = -1.
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if (match(Op0, m_Undef()) || match(Op1, m_Undef()))
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return Constant::getAllOnesValue(ReturnType);
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// X + 0 -> X
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if (match(Op1, m_Zero()))
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return Op0;
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// 0 + X -> X
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if (match(Op0, m_Zero()))
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return Op1;
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break;
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case Intrinsic::usub_sat:
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// sat(0 - X) -> 0, sat(X - MAX) -> 0
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if (match(Op0, m_Zero()) || match(Op1, m_AllOnes()))
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return Constant::getNullValue(ReturnType);
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LLVM_FALLTHROUGH;
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case Intrinsic::ssub_sat:
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// X - X -> 0, X - undef -> 0, undef - X -> 0
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if (Op0 == Op1 || match(Op0, m_Undef()) || match(Op1, m_Undef()))
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return Constant::getNullValue(ReturnType);
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// X - 0 -> X
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if (match(Op1, m_Zero()))
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return Op0;
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break;
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case Intrinsic::load_relative:
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if (auto *C0 = dyn_cast<Constant>(Op0))
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if (auto *C1 = dyn_cast<Constant>(Op1))
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@ -16,8 +16,7 @@ declare <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8>, <2 x i8>)
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define i8 @uadd_scalar_0(i8 %a) {
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; CHECK-LABEL: @uadd_scalar_0(
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; CHECK-NEXT: [[X1:%.*]] = call i8 @llvm.uadd.sat.i8(i8 [[A:%.*]], i8 0)
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; CHECK-NEXT: ret i8 [[X1]]
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; CHECK-NEXT: ret i8 [[A:%.*]]
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;
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%x1 = call i8 @llvm.uadd.sat.i8(i8 %a, i8 0)
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ret i8 %x1
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@ -25,8 +24,7 @@ define i8 @uadd_scalar_0(i8 %a) {
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define <2 x i8> @uadd_vector_0(<2 x i8> %a) {
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; CHECK-LABEL: @uadd_vector_0(
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; CHECK-NEXT: [[X1V:%.*]] = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> zeroinitializer)
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; CHECK-NEXT: ret <2 x i8> [[X1V]]
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; CHECK-NEXT: ret <2 x i8> [[A:%.*]]
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;
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%x1v = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> %a, <2 x i8> zeroinitializer)
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ret <2 x i8> %x1v
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@ -34,8 +32,7 @@ define <2 x i8> @uadd_vector_0(<2 x i8> %a) {
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define i3 @uadd_scalar_0_commute(i3 %a) {
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; CHECK-LABEL: @uadd_scalar_0_commute(
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; CHECK-NEXT: [[X2:%.*]] = call i3 @llvm.uadd.sat.i3(i3 0, i3 [[A:%.*]])
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; CHECK-NEXT: ret i3 [[X2]]
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; CHECK-NEXT: ret i3 [[A:%.*]]
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;
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%x2 = call i3 @llvm.uadd.sat.i3(i3 0, i3 %a)
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ret i3 %x2
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@ -43,8 +40,7 @@ define i3 @uadd_scalar_0_commute(i3 %a) {
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define <2 x i8> @uadd_vector_0_commute(<2 x i8> %a) {
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; CHECK-LABEL: @uadd_vector_0_commute(
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; CHECK-NEXT: [[X2V:%.*]] = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> <i8 0, i8 undef>, <2 x i8> [[A:%.*]])
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; CHECK-NEXT: ret <2 x i8> [[X2V]]
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; CHECK-NEXT: ret <2 x i8> [[A:%.*]]
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;
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%x2v = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> <i8 0, i8 undef>, <2 x i8> %a)
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ret <2 x i8> %x2v
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@ -52,8 +48,7 @@ define <2 x i8> @uadd_vector_0_commute(<2 x i8> %a) {
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define i8 @uadd_scalar_maxval(i8 %a) {
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; CHECK-LABEL: @uadd_scalar_maxval(
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; CHECK-NEXT: [[X3:%.*]] = call i8 @llvm.uadd.sat.i8(i8 [[A:%.*]], i8 -1)
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; CHECK-NEXT: ret i8 [[X3]]
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; CHECK-NEXT: ret i8 -1
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;
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%x3 = call i8 @llvm.uadd.sat.i8(i8 %a, i8 255)
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ret i8 %x3
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@ -61,8 +56,7 @@ define i8 @uadd_scalar_maxval(i8 %a) {
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define <2 x i9> @uadd_vector_maxval(<2 x i9> %a) {
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; CHECK-LABEL: @uadd_vector_maxval(
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; CHECK-NEXT: [[X3V:%.*]] = call <2 x i9> @llvm.uadd.sat.v2i9(<2 x i9> [[A:%.*]], <2 x i9> <i9 -1, i9 -1>)
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; CHECK-NEXT: ret <2 x i9> [[X3V]]
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; CHECK-NEXT: ret <2 x i9> <i9 -1, i9 -1>
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;
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%x3v = call <2 x i9> @llvm.uadd.sat.v2i9(<2 x i9> %a, <2 x i9> <i9 511, i9 511>)
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ret <2 x i9> %x3v
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@ -70,8 +64,7 @@ define <2 x i9> @uadd_vector_maxval(<2 x i9> %a) {
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define i3 @uadd_scalar_maxval_commute(i3 %a) {
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; CHECK-LABEL: @uadd_scalar_maxval_commute(
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; CHECK-NEXT: [[X4:%.*]] = call i3 @llvm.uadd.sat.i3(i3 -1, i3 [[A:%.*]])
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; CHECK-NEXT: ret i3 [[X4]]
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; CHECK-NEXT: ret i3 -1
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;
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%x4 = call i3 @llvm.uadd.sat.i3(i3 7, i3 %a)
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ret i3 %x4
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@ -79,8 +72,7 @@ define i3 @uadd_scalar_maxval_commute(i3 %a) {
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define <2 x i8> @uadd_vector_maxval_commute(<2 x i8> %a) {
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; CHECK-LABEL: @uadd_vector_maxval_commute(
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; CHECK-NEXT: [[X4V:%.*]] = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> <i8 -1, i8 -1>, <2 x i8> [[A:%.*]])
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; CHECK-NEXT: ret <2 x i8> [[X4V]]
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; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
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;
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%x4v = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> <i8 255, i8 255>, <2 x i8> %a)
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ret <2 x i8> %x4v
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@ -88,8 +80,7 @@ define <2 x i8> @uadd_vector_maxval_commute(<2 x i8> %a) {
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define i8 @uadd_scalar_undef(i8 %a) {
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; CHECK-LABEL: @uadd_scalar_undef(
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; CHECK-NEXT: [[X5:%.*]] = call i8 @llvm.uadd.sat.i8(i8 [[A:%.*]], i8 undef)
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; CHECK-NEXT: ret i8 [[X5]]
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; CHECK-NEXT: ret i8 -1
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;
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%x5 = call i8 @llvm.uadd.sat.i8(i8 %a, i8 undef)
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ret i8 %x5
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@ -97,8 +88,7 @@ define i8 @uadd_scalar_undef(i8 %a) {
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define <2 x i8> @uadd_vector_undef(<2 x i8> %a) {
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; CHECK-LABEL: @uadd_vector_undef(
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; CHECK-NEXT: [[X5V:%.*]] = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> undef)
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; CHECK-NEXT: ret <2 x i8> [[X5V]]
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; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
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;
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%x5v = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> %a, <2 x i8> <i8 undef, i8 undef>)
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ret <2 x i8> %x5v
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@ -106,8 +96,7 @@ define <2 x i8> @uadd_vector_undef(<2 x i8> %a) {
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define i8 @uadd_scalar_undef_commute(i8 %a) {
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; CHECK-LABEL: @uadd_scalar_undef_commute(
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; CHECK-NEXT: [[X6:%.*]] = call i8 @llvm.uadd.sat.i8(i8 undef, i8 [[A:%.*]])
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; CHECK-NEXT: ret i8 [[X6]]
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; CHECK-NEXT: ret i8 -1
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;
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%x6 = call i8 @llvm.uadd.sat.i8(i8 undef, i8 %a)
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ret i8 %x6
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@ -115,8 +104,7 @@ define i8 @uadd_scalar_undef_commute(i8 %a) {
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define <2 x i8> @uadd_vector_undef_commute(<2 x i8> %a) {
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; CHECK-LABEL: @uadd_vector_undef_commute(
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; CHECK-NEXT: [[X5V:%.*]] = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> undef, <2 x i8> [[A:%.*]])
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; CHECK-NEXT: ret <2 x i8> [[X5V]]
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; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
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;
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%x5v = call <2 x i8> @llvm.uadd.sat.v2i8(<2 x i8> undef, <2 x i8> %a)
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ret <2 x i8> %x5v
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@ -124,8 +112,7 @@ define <2 x i8> @uadd_vector_undef_commute(<2 x i8> %a) {
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define i8 @sadd_scalar_0(i8 %a) {
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; CHECK-LABEL: @sadd_scalar_0(
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; CHECK-NEXT: [[Y1:%.*]] = call i8 @llvm.sadd.sat.i8(i8 [[A:%.*]], i8 0)
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; CHECK-NEXT: ret i8 [[Y1]]
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; CHECK-NEXT: ret i8 [[A:%.*]]
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;
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%y1 = call i8 @llvm.sadd.sat.i8(i8 %a, i8 0)
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ret i8 %y1
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@ -133,8 +120,7 @@ define i8 @sadd_scalar_0(i8 %a) {
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define <2 x i8> @sadd_vector_0(<2 x i8> %a) {
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; CHECK-LABEL: @sadd_vector_0(
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; CHECK-NEXT: [[Y1V:%.*]] = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> <i8 undef, i8 0>)
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; CHECK-NEXT: ret <2 x i8> [[Y1V]]
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; CHECK-NEXT: ret <2 x i8> [[A:%.*]]
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;
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%y1v = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> %a, <2 x i8> <i8 undef, i8 0>)
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ret <2 x i8> %y1v
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@ -142,8 +128,7 @@ define <2 x i8> @sadd_vector_0(<2 x i8> %a) {
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define i8 @sadd_scalar_0_commute(i8 %a) {
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; CHECK-LABEL: @sadd_scalar_0_commute(
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; CHECK-NEXT: [[Y2:%.*]] = call i8 @llvm.sadd.sat.i8(i8 0, i8 [[A:%.*]])
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; CHECK-NEXT: ret i8 [[Y2]]
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; CHECK-NEXT: ret i8 [[A:%.*]]
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;
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%y2 = call i8 @llvm.sadd.sat.i8(i8 0, i8 %a)
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ret i8 %y2
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@ -151,8 +136,7 @@ define i8 @sadd_scalar_0_commute(i8 %a) {
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define <2 x i8> @sadd_vector_0_commute(<2 x i8> %a) {
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; CHECK-LABEL: @sadd_vector_0_commute(
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; CHECK-NEXT: [[Y2V:%.*]] = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> zeroinitializer, <2 x i8> [[A:%.*]])
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; CHECK-NEXT: ret <2 x i8> [[Y2V]]
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; CHECK-NEXT: ret <2 x i8> [[A:%.*]]
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;
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%y2v = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> zeroinitializer, <2 x i8> %a)
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ret <2 x i8> %y2v
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@ -196,8 +180,7 @@ define <2 x i8> @sadd_vector_maxval_commute(<2 x i8> %a) {
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define i8 @sadd_scalar_undef(i8 %a) {
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; CHECK-LABEL: @sadd_scalar_undef(
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; CHECK-NEXT: [[Y5:%.*]] = call i8 @llvm.sadd.sat.i8(i8 [[A:%.*]], i8 undef)
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; CHECK-NEXT: ret i8 [[Y5]]
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; CHECK-NEXT: ret i8 -1
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;
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%y5 = call i8 @llvm.sadd.sat.i8(i8 %a, i8 undef)
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ret i8 %y5
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@ -205,8 +188,7 @@ define i8 @sadd_scalar_undef(i8 %a) {
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define <2 x i8> @sadd_vector_undef(<2 x i8> %a) {
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; CHECK-LABEL: @sadd_vector_undef(
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; CHECK-NEXT: [[Y5V:%.*]] = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> undef)
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; CHECK-NEXT: ret <2 x i8> [[Y5V]]
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; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
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;
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%y5v = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> %a, <2 x i8> undef)
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ret <2 x i8> %y5v
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@ -214,8 +196,7 @@ define <2 x i8> @sadd_vector_undef(<2 x i8> %a) {
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define i8 @sadd_scalar_undef_commute(i8 %a) {
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; CHECK-LABEL: @sadd_scalar_undef_commute(
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; CHECK-NEXT: [[Y6:%.*]] = call i8 @llvm.sadd.sat.i8(i8 undef, i8 [[A:%.*]])
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; CHECK-NEXT: ret i8 [[Y6]]
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; CHECK-NEXT: ret i8 -1
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;
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%y6 = call i8 @llvm.sadd.sat.i8(i8 undef, i8 %a)
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ret i8 %y6
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@ -223,8 +204,7 @@ define i8 @sadd_scalar_undef_commute(i8 %a) {
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define <2 x i8> @sadd_vector_undef_commute(<2 x i8> %a) {
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; CHECK-LABEL: @sadd_vector_undef_commute(
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; CHECK-NEXT: [[Y6V:%.*]] = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> undef, <2 x i8> [[A:%.*]])
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; CHECK-NEXT: ret <2 x i8> [[Y6V]]
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; CHECK-NEXT: ret <2 x i8> <i8 -1, i8 -1>
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;
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%y6v = call <2 x i8> @llvm.sadd.sat.v2i8(<2 x i8> undef, <2 x i8> %a)
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ret <2 x i8> %y6v
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@ -232,8 +212,7 @@ define <2 x i8> @sadd_vector_undef_commute(<2 x i8> %a) {
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define i8 @usub_scalar_0(i8 %a) {
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; CHECK-LABEL: @usub_scalar_0(
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; CHECK-NEXT: [[X1:%.*]] = call i8 @llvm.usub.sat.i8(i8 [[A:%.*]], i8 0)
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; CHECK-NEXT: ret i8 [[X1]]
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; CHECK-NEXT: ret i8 [[A:%.*]]
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;
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%x1 = call i8 @llvm.usub.sat.i8(i8 %a, i8 0)
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ret i8 %x1
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@ -241,8 +220,7 @@ define i8 @usub_scalar_0(i8 %a) {
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define <2 x i8> @usub_vector_0(<2 x i8> %a) {
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; CHECK-LABEL: @usub_vector_0(
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; CHECK-NEXT: [[X1V:%.*]] = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> zeroinitializer)
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; CHECK-NEXT: ret <2 x i8> [[X1V]]
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; CHECK-NEXT: ret <2 x i8> [[A:%.*]]
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;
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%x1v = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> %a, <2 x i8> <i8 0, i8 0>)
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ret <2 x i8> %x1v
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@ -250,8 +228,7 @@ define <2 x i8> @usub_vector_0(<2 x i8> %a) {
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define i8 @usub_scalar_0_commute(i8 %a) {
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; CHECK-LABEL: @usub_scalar_0_commute(
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; CHECK-NEXT: [[X2:%.*]] = call i8 @llvm.usub.sat.i8(i8 0, i8 [[A:%.*]])
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; CHECK-NEXT: ret i8 [[X2]]
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; CHECK-NEXT: ret i8 0
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;
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%x2 = call i8 @llvm.usub.sat.i8(i8 0, i8 %a)
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ret i8 %x2
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@ -259,8 +236,7 @@ define i8 @usub_scalar_0_commute(i8 %a) {
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define <2 x i8> @usub_vector_0_commute(<2 x i8> %a) {
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; CHECK-LABEL: @usub_vector_0_commute(
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; CHECK-NEXT: [[X2V:%.*]] = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> zeroinitializer, <2 x i8> [[A:%.*]])
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; CHECK-NEXT: ret <2 x i8> [[X2V]]
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; CHECK-NEXT: ret <2 x i8> zeroinitializer
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;
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%x2v = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> <i8 0, i8 0>, <2 x i8> %a)
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ret <2 x i8> %x2v
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@ -268,8 +244,7 @@ define <2 x i8> @usub_vector_0_commute(<2 x i8> %a) {
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define i8 @usub_scalar_maxval(i8 %a) {
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; CHECK-LABEL: @usub_scalar_maxval(
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; CHECK-NEXT: [[X3:%.*]] = call i8 @llvm.usub.sat.i8(i8 [[A:%.*]], i8 -1)
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; CHECK-NEXT: ret i8 [[X3]]
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; CHECK-NEXT: ret i8 0
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;
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%x3 = call i8 @llvm.usub.sat.i8(i8 %a, i8 255)
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ret i8 %x3
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@ -277,8 +252,7 @@ define i8 @usub_scalar_maxval(i8 %a) {
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define <2 x i8> @usub_vector_maxval(<2 x i8> %a) {
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; CHECK-LABEL: @usub_vector_maxval(
|
||||
; CHECK-NEXT: [[X3V:%.*]] = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> <i8 -1, i8 -1>)
|
||||
; CHECK-NEXT: ret <2 x i8> [[X3V]]
|
||||
; CHECK-NEXT: ret <2 x i8> zeroinitializer
|
||||
;
|
||||
%x3v = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> %a, <2 x i8> <i8 255, i8 255>)
|
||||
ret <2 x i8> %x3v
|
||||
@ -286,8 +260,7 @@ define <2 x i8> @usub_vector_maxval(<2 x i8> %a) {
|
||||
|
||||
define i8 @usub_scalar_undef(i8 %a) {
|
||||
; CHECK-LABEL: @usub_scalar_undef(
|
||||
; CHECK-NEXT: [[X4:%.*]] = call i8 @llvm.usub.sat.i8(i8 [[A:%.*]], i8 undef)
|
||||
; CHECK-NEXT: ret i8 [[X4]]
|
||||
; CHECK-NEXT: ret i8 0
|
||||
;
|
||||
%x4 = call i8 @llvm.usub.sat.i8(i8 %a, i8 undef)
|
||||
ret i8 %x4
|
||||
@ -295,17 +268,15 @@ define i8 @usub_scalar_undef(i8 %a) {
|
||||
|
||||
define <2 x i8> @usub_vector_undef(<2 x i8> %a) {
|
||||
; CHECK-LABEL: @usub_vector_undef(
|
||||
; CHECK-NEXT: [[X4V:%.*]] = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> <i8 0, i8 undef>)
|
||||
; CHECK-NEXT: ret <2 x i8> [[X4V]]
|
||||
; CHECK-NEXT: ret <2 x i8> zeroinitializer
|
||||
;
|
||||
%x4v = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> %a, <2 x i8> <i8 0, i8 undef>)
|
||||
%x4v = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> %a, <2 x i8> <i8 undef, i8 undef>)
|
||||
ret <2 x i8> %x4v
|
||||
}
|
||||
|
||||
define i8 @usub_scalar_undef_commute(i8 %a) {
|
||||
; CHECK-LABEL: @usub_scalar_undef_commute(
|
||||
; CHECK-NEXT: [[X5:%.*]] = call i8 @llvm.usub.sat.i8(i8 undef, i8 [[A:%.*]])
|
||||
; CHECK-NEXT: ret i8 [[X5]]
|
||||
; CHECK-NEXT: ret i8 0
|
||||
;
|
||||
%x5 = call i8 @llvm.usub.sat.i8(i8 undef, i8 %a)
|
||||
ret i8 %x5
|
||||
@ -313,17 +284,15 @@ define i8 @usub_scalar_undef_commute(i8 %a) {
|
||||
|
||||
define <2 x i8> @usub_vector_undef_commute(<2 x i8> %a) {
|
||||
; CHECK-LABEL: @usub_vector_undef_commute(
|
||||
; CHECK-NEXT: [[X5V:%.*]] = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> undef)
|
||||
; CHECK-NEXT: ret <2 x i8> [[X5V]]
|
||||
; CHECK-NEXT: ret <2 x i8> zeroinitializer
|
||||
;
|
||||
%x5v = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> %a, <2 x i8> <i8 undef, i8 undef>)
|
||||
%x5v = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> <i8 undef, i8 undef>, <2 x i8> %a)
|
||||
ret <2 x i8> %x5v
|
||||
}
|
||||
|
||||
define i8 @usub_scalar_same(i8 %a) {
|
||||
; CHECK-LABEL: @usub_scalar_same(
|
||||
; CHECK-NEXT: [[X6:%.*]] = call i8 @llvm.usub.sat.i8(i8 [[A:%.*]], i8 [[A]])
|
||||
; CHECK-NEXT: ret i8 [[X6]]
|
||||
; CHECK-NEXT: ret i8 0
|
||||
;
|
||||
%x6 = call i8 @llvm.usub.sat.i8(i8 %a, i8 %a)
|
||||
ret i8 %x6
|
||||
@ -331,8 +300,7 @@ define i8 @usub_scalar_same(i8 %a) {
|
||||
|
||||
define <2 x i8> @usub_vector_same(<2 x i8> %a) {
|
||||
; CHECK-LABEL: @usub_vector_same(
|
||||
; CHECK-NEXT: [[X6V:%.*]] = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> [[A]])
|
||||
; CHECK-NEXT: ret <2 x i8> [[X6V]]
|
||||
; CHECK-NEXT: ret <2 x i8> zeroinitializer
|
||||
;
|
||||
%x6v = call <2 x i8> @llvm.usub.sat.v2i8(<2 x i8> %a, <2 x i8> %a)
|
||||
ret <2 x i8> %x6v
|
||||
@ -340,8 +308,7 @@ define <2 x i8> @usub_vector_same(<2 x i8> %a) {
|
||||
|
||||
define i8 @ssub_scalar_0(i8 %a) {
|
||||
; CHECK-LABEL: @ssub_scalar_0(
|
||||
; CHECK-NEXT: [[Y1:%.*]] = call i8 @llvm.ssub.sat.i8(i8 [[A:%.*]], i8 0)
|
||||
; CHECK-NEXT: ret i8 [[Y1]]
|
||||
; CHECK-NEXT: ret i8 [[A:%.*]]
|
||||
;
|
||||
%y1 = call i8 @llvm.ssub.sat.i8(i8 %a, i8 0)
|
||||
ret i8 %y1
|
||||
@ -349,8 +316,7 @@ define i8 @ssub_scalar_0(i8 %a) {
|
||||
|
||||
define <2 x i8> @ssub_vector_0(<2 x i8> %a) {
|
||||
; CHECK-LABEL: @ssub_vector_0(
|
||||
; CHECK-NEXT: [[Y1V:%.*]] = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> zeroinitializer)
|
||||
; CHECK-NEXT: ret <2 x i8> [[Y1V]]
|
||||
; CHECK-NEXT: ret <2 x i8> [[A:%.*]]
|
||||
;
|
||||
%y1v = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> %a, <2 x i8> <i8 0, i8 0>)
|
||||
ret <2 x i8> %y1v
|
||||
@ -394,8 +360,7 @@ define <2 x i8> @ssub_vector_maxval(<2 x i8> %a) {
|
||||
|
||||
define i8 @ssub_scalar_undef(i8 %a) {
|
||||
; CHECK-LABEL: @ssub_scalar_undef(
|
||||
; CHECK-NEXT: [[Y4:%.*]] = call i8 @llvm.ssub.sat.i8(i8 [[A:%.*]], i8 undef)
|
||||
; CHECK-NEXT: ret i8 [[Y4]]
|
||||
; CHECK-NEXT: ret i8 0
|
||||
;
|
||||
%y4 = call i8 @llvm.ssub.sat.i8(i8 %a, i8 undef)
|
||||
ret i8 %y4
|
||||
@ -403,8 +368,7 @@ define i8 @ssub_scalar_undef(i8 %a) {
|
||||
|
||||
define <2 x i8> @ssub_vector_undef(<2 x i8> %a) {
|
||||
; CHECK-LABEL: @ssub_vector_undef(
|
||||
; CHECK-NEXT: [[Y4V:%.*]] = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> undef)
|
||||
; CHECK-NEXT: ret <2 x i8> [[Y4V]]
|
||||
; CHECK-NEXT: ret <2 x i8> zeroinitializer
|
||||
;
|
||||
%y4v = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> %a, <2 x i8> undef)
|
||||
ret <2 x i8> %y4v
|
||||
@ -412,8 +376,7 @@ define <2 x i8> @ssub_vector_undef(<2 x i8> %a) {
|
||||
|
||||
define i8 @ssub_scalar_undef_commute(i8 %a) {
|
||||
; CHECK-LABEL: @ssub_scalar_undef_commute(
|
||||
; CHECK-NEXT: [[Y5:%.*]] = call i8 @llvm.ssub.sat.i8(i8 undef, i8 [[A:%.*]])
|
||||
; CHECK-NEXT: ret i8 [[Y5]]
|
||||
; CHECK-NEXT: ret i8 0
|
||||
;
|
||||
%y5 = call i8 @llvm.ssub.sat.i8(i8 undef, i8 %a)
|
||||
ret i8 %y5
|
||||
@ -421,8 +384,7 @@ define i8 @ssub_scalar_undef_commute(i8 %a) {
|
||||
|
||||
define <2 x i8> @ssub_vector_undef_commute(<2 x i8> %a) {
|
||||
; CHECK-LABEL: @ssub_vector_undef_commute(
|
||||
; CHECK-NEXT: [[Y5V:%.*]] = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> undef, <2 x i8> [[A:%.*]])
|
||||
; CHECK-NEXT: ret <2 x i8> [[Y5V]]
|
||||
; CHECK-NEXT: ret <2 x i8> zeroinitializer
|
||||
;
|
||||
%y5v = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> <i8 undef, i8 undef>, <2 x i8> %a)
|
||||
ret <2 x i8> %y5v
|
||||
@ -430,8 +392,7 @@ define <2 x i8> @ssub_vector_undef_commute(<2 x i8> %a) {
|
||||
|
||||
define i8 @ssub_scalar_same(i8 %a) {
|
||||
; CHECK-LABEL: @ssub_scalar_same(
|
||||
; CHECK-NEXT: [[Y6:%.*]] = call i8 @llvm.ssub.sat.i8(i8 [[A:%.*]], i8 [[A]])
|
||||
; CHECK-NEXT: ret i8 [[Y6]]
|
||||
; CHECK-NEXT: ret i8 0
|
||||
;
|
||||
%y6 = call i8 @llvm.ssub.sat.i8(i8 %a, i8 %a)
|
||||
ret i8 %y6
|
||||
@ -439,8 +400,7 @@ define i8 @ssub_scalar_same(i8 %a) {
|
||||
|
||||
define <2 x i8> @ssub_vector_same(<2 x i8> %a) {
|
||||
; CHECK-LABEL: @ssub_vector_same(
|
||||
; CHECK-NEXT: [[Y6V:%.*]] = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> [[A:%.*]], <2 x i8> [[A]])
|
||||
; CHECK-NEXT: ret <2 x i8> [[Y6V]]
|
||||
; CHECK-NEXT: ret <2 x i8> zeroinitializer
|
||||
;
|
||||
%y6v = call <2 x i8> @llvm.ssub.sat.v2i8(<2 x i8> %a, <2 x i8> %a)
|
||||
ret <2 x i8> %y6v
|
||||
|
||||
Loading…
Reference in New Issue
Block a user