diff options
3 files changed, 81 insertions, 114 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp index 5f8bf84092c..f06a0e83c9b 100644 --- a/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp +++ b/llvm/lib/Transforms/InstCombine/InstCombineCompares.cpp @@ -2883,7 +2883,10 @@ Instruction *InstCombiner::foldICmpInstWithConstantNotInt(ICmpInst &I) { /// In this case, we are looking for comparisons that look like /// a check for a lossy truncation. /// Folds: -/// x & (-1 >> y) SrcPred x to x DstPred (-1 >> y) +/// icmp SrcPred (x & Mask), x to icmp DstPred x, Mask +/// Where Mask is some pattern that produces all-ones in low bits: +/// (-1 >> y) +/// ~(-1 << y) /// The Mask can be a constant, too. /// For some predicates, the operands are commutative. /// For others, x can only be on a specific side. @@ -2891,7 +2894,9 @@ static Value *foldICmpWithLowBitMaskedVal(ICmpInst &I, InstCombiner::BuilderTy &Builder) { ICmpInst::Predicate SrcPred; Value *X, *M; - auto m_Mask = m_CombineOr(m_LShr(m_AllOnes(), m_Value()), m_LowBitMask()); + auto m_VariableMask = m_CombineOr(m_Not(m_Shl(m_AllOnes(), m_Value())), + m_LShr(m_AllOnes(), m_Value())); + auto m_Mask = m_CombineOr(m_VariableMask, m_LowBitMask()); if (!match(&I, m_c_ICmp(SrcPred, m_c_And(m_CombineAnd(m_Mask, m_Value(M)), m_Value(X)), m_Deferred(X)))) diff --git a/llvm/test/Transforms/InstCombine/canonicalize-low-bit-mask-v2-and-icmp-eq-to-icmp-ule.ll b/llvm/test/Transforms/InstCombine/canonicalize-low-bit-mask-v2-and-icmp-eq-to-icmp-ule.ll index c157fcf7967..42b7b3e9359 100644 --- a/llvm/test/Transforms/InstCombine/canonicalize-low-bit-mask-v2-and-icmp-eq-to-icmp-ule.ll +++ b/llvm/test/Transforms/InstCombine/canonicalize-low-bit-mask-v2-and-icmp-eq-to-icmp-ule.ll @@ -16,11 +16,9 @@ define i1 @p0(i8 %x, i8 %y) { ; CHECK-LABEL: @p0( -; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 -; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -35,11 +33,9 @@ define i1 @p0(i8 %x, i8 %y) { define <2 x i1> @p1_vec(<2 x i8> %x, <2 x i8> %y) { ; CHECK-LABEL: @p1_vec( -; CHECK-NEXT: [[T0:%.*]] = shl <2 x i8> <i8 -1, i8 -1>, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor <2 x i8> [[T0]], <i8 -1, i8 -1> -; CHECK-NEXT: [[T2:%.*]] = and <2 x i8> [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq <2 x i8> [[T2]], [[X]] -; CHECK-NEXT: ret <2 x i1> [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr <2 x i8> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <2 x i8> [[X_HIGHBITS]], zeroinitializer +; CHECK-NEXT: ret <2 x i1> [[TMP1]] ; %t0 = shl <2 x i8> <i8 -1, i8 -1>, %y %t1 = xor <2 x i8> %t0, <i8 -1, i8 -1> @@ -50,11 +46,9 @@ define <2 x i1> @p1_vec(<2 x i8> %x, <2 x i8> %y) { define <3 x i1> @p2_vec_undef0(<3 x i8> %x, <3 x i8> %y) { ; CHECK-LABEL: @p2_vec_undef0( -; CHECK-NEXT: [[T0:%.*]] = shl <3 x i8> <i8 -1, i8 undef, i8 -1>, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor <3 x i8> [[T0]], <i8 -1, i8 -1, i8 -1> -; CHECK-NEXT: [[T2:%.*]] = and <3 x i8> [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq <3 x i8> [[T2]], [[X]] -; CHECK-NEXT: ret <3 x i1> [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr <3 x i8> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <3 x i8> [[X_HIGHBITS]], zeroinitializer +; CHECK-NEXT: ret <3 x i1> [[TMP1]] ; %t0 = shl <3 x i8> <i8 -1, i8 undef, i8 -1>, %y %t1 = xor <3 x i8> %t0, <i8 -1, i8 -1, i8 -1> @@ -65,11 +59,9 @@ define <3 x i1> @p2_vec_undef0(<3 x i8> %x, <3 x i8> %y) { define <3 x i1> @p3_vec_undef0(<3 x i8> %x, <3 x i8> %y) { ; CHECK-LABEL: @p3_vec_undef0( -; CHECK-NEXT: [[T0:%.*]] = shl <3 x i8> <i8 -1, i8 -1, i8 -1>, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor <3 x i8> [[T0]], <i8 -1, i8 undef, i8 -1> -; CHECK-NEXT: [[T2:%.*]] = and <3 x i8> [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq <3 x i8> [[T2]], [[X]] -; CHECK-NEXT: ret <3 x i1> [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr <3 x i8> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <3 x i8> [[X_HIGHBITS]], zeroinitializer +; CHECK-NEXT: ret <3 x i1> [[TMP1]] ; %t0 = shl <3 x i8> <i8 -1, i8 -1, i8 -1>, %y %t1 = xor <3 x i8> %t0, <i8 -1, i8 undef, i8 -1> @@ -80,11 +72,9 @@ define <3 x i1> @p3_vec_undef0(<3 x i8> %x, <3 x i8> %y) { define <3 x i1> @p4_vec_undef2(<3 x i8> %x, <3 x i8> %y) { ; CHECK-LABEL: @p4_vec_undef2( -; CHECK-NEXT: [[T0:%.*]] = shl <3 x i8> <i8 -1, i8 undef, i8 -1>, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor <3 x i8> [[T0]], <i8 -1, i8 undef, i8 -1> -; CHECK-NEXT: [[T2:%.*]] = and <3 x i8> [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq <3 x i8> [[T2]], [[X]] -; CHECK-NEXT: ret <3 x i1> [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr <3 x i8> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq <3 x i8> [[X_HIGHBITS]], zeroinitializer +; CHECK-NEXT: ret <3 x i1> [[TMP1]] ; %t0 = shl <3 x i8> <i8 -1, i8 undef, i8 -1>, %y %t1 = xor <3 x i8> %t0, <i8 -1, i8 undef, i8 -1> @@ -101,12 +91,10 @@ declare i8 @gen8() define i1 @c0(i8 %y) { ; CHECK-LABEL: @c0( -; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[X:%.*]] = call i8 @gen8() -; CHECK-NEXT: [[T2:%.*]] = and i8 [[X]], [[T1]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -118,12 +106,10 @@ define i1 @c0(i8 %y) { define i1 @c1(i8 %y) { ; CHECK-LABEL: @c1( -; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[X:%.*]] = call i8 @gen8() -; CHECK-NEXT: [[T2:%.*]] = and i8 [[X]], [[T1]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[X]], [[T2]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -135,12 +121,10 @@ define i1 @c1(i8 %y) { define i1 @c2(i8 %y) { ; CHECK-LABEL: @c2( -; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[X:%.*]] = call i8 @gen8() -; CHECK-NEXT: [[T2:%.*]] = and i8 [[X]], [[T1]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[X]], [[T2]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -160,10 +144,9 @@ define i1 @oneuse0(i8 %x, i8 %y) { ; CHECK-LABEL: @oneuse0( ; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] ; CHECK-NEXT: call void @use8(i8 [[T0]]) -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 -; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X:%.*]], [[Y]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y call void @use8(i8 %t0) @@ -178,9 +161,8 @@ define i1 @oneuse1(i8 %x, i8 %y) { ; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] ; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: call void @use8(i8 [[T1]]) -; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp uge i8 [[T1]], [[X:%.*]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -196,8 +178,8 @@ define i1 @oneuse2(i8 %x, i8 %y) { ; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] ; CHECK-NEXT: call void @use8(i8 [[T2]]) -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp uge i8 [[T1]], [[X]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -213,9 +195,8 @@ define i1 @oneuse3(i8 %x, i8 %y) { ; CHECK-NEXT: call void @use8(i8 [[T0]]) ; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: call void @use8(i8 [[T1]]) -; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp uge i8 [[T1]], [[X:%.*]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y call void @use8(i8 %t0) @@ -233,8 +214,8 @@ define i1 @oneuse4(i8 %x, i8 %y) { ; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] ; CHECK-NEXT: call void @use8(i8 [[T2]]) -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp uge i8 [[T1]], [[X]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y call void @use8(i8 %t0) @@ -253,8 +234,8 @@ define i1 @oneuse5(i8 %x, i8 %y) { ; CHECK-NEXT: call void @use8(i8 [[T1]]) ; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] ; CHECK-NEXT: call void @use8(i8 [[T2]]) -; CHECK-NEXT: [[RET:%.*]] = icmp eq i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp uge i8 [[T1]], [[X]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y call void @use8(i8 %t0) diff --git a/llvm/test/Transforms/InstCombine/canonicalize-low-bit-mask-v2-and-icmp-ne-to-icmp-ugt.ll b/llvm/test/Transforms/InstCombine/canonicalize-low-bit-mask-v2-and-icmp-ne-to-icmp-ugt.ll index b9c089c1059..2826d2d33c1 100644 --- a/llvm/test/Transforms/InstCombine/canonicalize-low-bit-mask-v2-and-icmp-ne-to-icmp-ugt.ll +++ b/llvm/test/Transforms/InstCombine/canonicalize-low-bit-mask-v2-and-icmp-ne-to-icmp-ugt.ll @@ -16,11 +16,9 @@ define i1 @p0(i8 %x, i8 %y) { ; CHECK-LABEL: @p0( -; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 -; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -35,11 +33,9 @@ define i1 @p0(i8 %x, i8 %y) { define <2 x i1> @p1_vec(<2 x i8> %x, <2 x i8> %y) { ; CHECK-LABEL: @p1_vec( -; CHECK-NEXT: [[T0:%.*]] = shl <2 x i8> <i8 -1, i8 -1>, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor <2 x i8> [[T0]], <i8 -1, i8 -1> -; CHECK-NEXT: [[T2:%.*]] = and <2 x i8> [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne <2 x i8> [[T2]], [[X]] -; CHECK-NEXT: ret <2 x i1> [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr <2 x i8> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne <2 x i8> [[X_HIGHBITS]], zeroinitializer +; CHECK-NEXT: ret <2 x i1> [[TMP1]] ; %t0 = shl <2 x i8> <i8 -1, i8 -1>, %y %t1 = xor <2 x i8> %t0, <i8 -1, i8 -1> @@ -50,11 +46,9 @@ define <2 x i1> @p1_vec(<2 x i8> %x, <2 x i8> %y) { define <3 x i1> @p2_vec_undef0(<3 x i8> %x, <3 x i8> %y) { ; CHECK-LABEL: @p2_vec_undef0( -; CHECK-NEXT: [[T0:%.*]] = shl <3 x i8> <i8 -1, i8 undef, i8 -1>, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor <3 x i8> [[T0]], <i8 -1, i8 -1, i8 -1> -; CHECK-NEXT: [[T2:%.*]] = and <3 x i8> [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne <3 x i8> [[T2]], [[X]] -; CHECK-NEXT: ret <3 x i1> [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr <3 x i8> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne <3 x i8> [[X_HIGHBITS]], zeroinitializer +; CHECK-NEXT: ret <3 x i1> [[TMP1]] ; %t0 = shl <3 x i8> <i8 -1, i8 undef, i8 -1>, %y %t1 = xor <3 x i8> %t0, <i8 -1, i8 -1, i8 -1> @@ -65,11 +59,9 @@ define <3 x i1> @p2_vec_undef0(<3 x i8> %x, <3 x i8> %y) { define <3 x i1> @p3_vec_undef0(<3 x i8> %x, <3 x i8> %y) { ; CHECK-LABEL: @p3_vec_undef0( -; CHECK-NEXT: [[T0:%.*]] = shl <3 x i8> <i8 -1, i8 -1, i8 -1>, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor <3 x i8> [[T0]], <i8 -1, i8 undef, i8 -1> -; CHECK-NEXT: [[T2:%.*]] = and <3 x i8> [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne <3 x i8> [[T2]], [[X]] -; CHECK-NEXT: ret <3 x i1> [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr <3 x i8> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne <3 x i8> [[X_HIGHBITS]], zeroinitializer +; CHECK-NEXT: ret <3 x i1> [[TMP1]] ; %t0 = shl <3 x i8> <i8 -1, i8 -1, i8 -1>, %y %t1 = xor <3 x i8> %t0, <i8 -1, i8 undef, i8 -1> @@ -80,11 +72,9 @@ define <3 x i1> @p3_vec_undef0(<3 x i8> %x, <3 x i8> %y) { define <3 x i1> @p4_vec_undef2(<3 x i8> %x, <3 x i8> %y) { ; CHECK-LABEL: @p4_vec_undef2( -; CHECK-NEXT: [[T0:%.*]] = shl <3 x i8> <i8 -1, i8 undef, i8 -1>, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor <3 x i8> [[T0]], <i8 -1, i8 undef, i8 -1> -; CHECK-NEXT: [[T2:%.*]] = and <3 x i8> [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne <3 x i8> [[T2]], [[X]] -; CHECK-NEXT: ret <3 x i1> [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr <3 x i8> [[X:%.*]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne <3 x i8> [[X_HIGHBITS]], zeroinitializer +; CHECK-NEXT: ret <3 x i1> [[TMP1]] ; %t0 = shl <3 x i8> <i8 -1, i8 undef, i8 -1>, %y %t1 = xor <3 x i8> %t0, <i8 -1, i8 undef, i8 -1> @@ -101,12 +91,10 @@ declare i8 @gen8() define i1 @c0(i8 %y) { ; CHECK-LABEL: @c0( -; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[X:%.*]] = call i8 @gen8() -; CHECK-NEXT: [[T2:%.*]] = and i8 [[X]], [[T1]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -118,12 +106,10 @@ define i1 @c0(i8 %y) { define i1 @c1(i8 %y) { ; CHECK-LABEL: @c1( -; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[X:%.*]] = call i8 @gen8() -; CHECK-NEXT: [[T2:%.*]] = and i8 [[X]], [[T1]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[X]], [[T2]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -135,12 +121,10 @@ define i1 @c1(i8 %y) { define i1 @c2(i8 %y) { ; CHECK-LABEL: @c2( -; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[X:%.*]] = call i8 @gen8() -; CHECK-NEXT: [[T2:%.*]] = and i8 [[X]], [[T1]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[X]], [[T2]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X]], [[Y:%.*]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -160,10 +144,9 @@ define i1 @oneuse0(i8 %x, i8 %y) { ; CHECK-LABEL: @oneuse0( ; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] ; CHECK-NEXT: call void @use8(i8 [[T0]]) -; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 -; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[X_HIGHBITS:%.*]] = lshr i8 [[X:%.*]], [[Y]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8 [[X_HIGHBITS]], 0 +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y call void @use8(i8 %t0) @@ -178,9 +161,8 @@ define i1 @oneuse1(i8 %x, i8 %y) { ; CHECK-NEXT: [[T0:%.*]] = shl i8 -1, [[Y:%.*]] ; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: call void @use8(i8 [[T1]]) -; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i8 [[T1]], [[X:%.*]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -196,8 +178,8 @@ define i1 @oneuse2(i8 %x, i8 %y) { ; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] ; CHECK-NEXT: call void @use8(i8 [[T2]]) -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i8 [[T1]], [[X]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y %t1 = xor i8 %t0, -1 @@ -213,9 +195,8 @@ define i1 @oneuse3(i8 %x, i8 %y) { ; CHECK-NEXT: call void @use8(i8 [[T0]]) ; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: call void @use8(i8 [[T1]]) -; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i8 [[T1]], [[X:%.*]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y call void @use8(i8 %t0) @@ -233,8 +214,8 @@ define i1 @oneuse4(i8 %x, i8 %y) { ; CHECK-NEXT: [[T1:%.*]] = xor i8 [[T0]], -1 ; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] ; CHECK-NEXT: call void @use8(i8 [[T2]]) -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i8 [[T1]], [[X]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y call void @use8(i8 %t0) @@ -253,8 +234,8 @@ define i1 @oneuse5(i8 %x, i8 %y) { ; CHECK-NEXT: call void @use8(i8 [[T1]]) ; CHECK-NEXT: [[T2:%.*]] = and i8 [[T1]], [[X:%.*]] ; CHECK-NEXT: call void @use8(i8 [[T2]]) -; CHECK-NEXT: [[RET:%.*]] = icmp ne i8 [[T2]], [[X]] -; CHECK-NEXT: ret i1 [[RET]] +; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i8 [[T1]], [[X]] +; CHECK-NEXT: ret i1 [[TMP1]] ; %t0 = shl i8 -1, %y call void @use8(i8 %t0) |
