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| -rw-r--r-- | llvm/test/Transforms/InstSimplify/shufflevector.ll | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstSimplify/shufflevector.ll b/llvm/test/Transforms/InstSimplify/shufflevector.ll new file mode 100644 index 00000000000..1baecd2e749 --- /dev/null +++ b/llvm/test/Transforms/InstSimplify/shufflevector.ll @@ -0,0 +1,71 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt < %s -instsimplify -S | FileCheck %s + +define <4 x i32> @splat_operand(<4 x i32> %x) { +; CHECK-LABEL: @splat_operand( +; CHECK-NEXT: [[SPLAT:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> undef, <4 x i32> zeroinitializer +; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[SPLAT]], <4 x i32> undef, <4 x i32> <i32 0, i32 3, i32 2, i32 1> +; CHECK-NEXT: ret <4 x i32> [[SHUF]] +; + %splat = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> zeroinitializer + %shuf = shufflevector <4 x i32> %splat, <4 x i32> undef, <4 x i32> <i32 0, i32 3, i32 2, i32 1> + ret <4 x i32> %shuf +} + +define <4 x i32> @undef_mask(<4 x i32> %x) { +; CHECK-LABEL: @undef_mask( +; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> undef, <4 x i32> undef +; CHECK-NEXT: ret <4 x i32> [[SHUF]] +; + %shuf = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> undef + ret <4 x i32> %shuf +} + +define <4 x i32> @identity_mask_0(<4 x i32> %x) { +; CHECK-LABEL: @identity_mask_0( +; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> +; CHECK-NEXT: ret <4 x i32> [[SHUF]] +; + %shuf = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> <i32 0, i32 1, i32 2, i32 3> + ret <4 x i32> %shuf +} + +define <4 x i32> @identity_mask_1(<4 x i32> %x) { +; CHECK-LABEL: @identity_mask_1( +; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> undef, <4 x i32> [[X:%.*]], <4 x i32> <i32 4, i32 5, i32 6, i32 7> +; CHECK-NEXT: ret <4 x i32> [[SHUF]] +; + %shuf = shufflevector <4 x i32> undef, <4 x i32> %x, <4 x i32> <i32 4, i32 5, i32 6, i32 7> + ret <4 x i32> %shuf +} + +define <4 x i32> @pseudo_identity_mask(<4 x i32> %x) { +; CHECK-LABEL: @pseudo_identity_mask( +; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> [[X]], <4 x i32> <i32 0, i32 1, i32 2, i32 7> +; CHECK-NEXT: ret <4 x i32> [[SHUF]] +; + %shuf = shufflevector <4 x i32> %x, <4 x i32> %x, <4 x i32> <i32 0, i32 1, i32 2, i32 7> + ret <4 x i32> %shuf +} + +define <4 x i32> @const_operand(<4 x i32> %x) { +; CHECK-LABEL: @const_operand( +; CHECK-NEXT: [[SHUF:%.*]] = shufflevector <4 x i32> <i32 42, i32 43, i32 44, i32 45>, <4 x i32> [[X:%.*]], <4 x i32> <i32 0, i32 3, i32 2, i32 1> +; CHECK-NEXT: ret <4 x i32> [[SHUF]] +; + %shuf = shufflevector <4 x i32> <i32 42, i32 43, i32 44, i32 45>, <4 x i32> %x, <4 x i32> <i32 0, i32 3, i32 2, i32 1> + ret <4 x i32> %shuf +} + +define <4 x i32> @merge(<4 x i32> %x) { +; CHECK-LABEL: @merge( +; CHECK-NEXT: [[LOWER:%.*]] = shufflevector <4 x i32> [[X:%.*]], <4 x i32> undef, <2 x i32> <i32 1, i32 0> +; CHECK-NEXT: [[UPPER:%.*]] = shufflevector <4 x i32> [[X]], <4 x i32> undef, <2 x i32> <i32 2, i32 3> +; CHECK-NEXT: [[MERGED:%.*]] = shufflevector <2 x i32> [[UPPER]], <2 x i32> [[LOWER]], <4 x i32> <i32 3, i32 2, i32 0, i32 1> +; CHECK-NEXT: ret <4 x i32> [[MERGED]] +; + %lower = shufflevector <4 x i32> %x, <4 x i32> undef, <2 x i32> <i32 1, i32 0> + %upper = shufflevector <4 x i32> %x, <4 x i32> undef, <2 x i32> <i32 2, i32 3> + %merged = shufflevector <2 x i32> %upper, <2 x i32> %lower, <4 x i32> <i32 3, i32 2, i32 0, i32 1> + ret <4 x i32> %merged +} |
