[ValueTracking] Add tests for Known{Bits,NonZero,FPClass} for llvm.vector.reverse; NFC

Author: goldsteinn

llvm/test/Analysis/ValueTracking/known-bits.ll

@@ -0,0 +1,28 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes=instsimplify < %s -S | FileCheck %s
+
+define <4 x i1> @vec_reverse_known_bits(<4 x i8> %xx) {
+; CHECK-LABEL: @vec_reverse_known_bits(
+; CHECK-NEXT:    [[X:%.*]] = or <4 x i8> [[XX:%.*]], <i8 -128, i8 -128, i8 -128, i8 -128>
+; CHECK-NEXT:    [[REV:%.*]] = call <4 x i8> @llvm.vector.reverse.v4i8(<4 x i8> [[X]])
+; CHECK-NEXT:    [[R:%.*]] = icmp slt <4 x i8> [[REV]], zeroinitializer
+; CHECK-NEXT:    ret <4 x i1> [[R]]
+;
+  %x = or <4 x i8> %xx, <i8 128, i8 128, i8 128, i8 128>
+  %rev = call <4 x i8> @llvm.vector.reverse(<4 x i8> %x)
+  %r = icmp slt <4 x i8> %rev, zeroinitializer
+  ret <4 x i1> %r
+}
+
+define <4 x i1> @vec_reverse_known_bits_fail(<4 x i8> %xx) {
+; CHECK-LABEL: @vec_reverse_known_bits_fail(
+; CHECK-NEXT:    [[X:%.*]] = or <4 x i8> [[XX:%.*]], <i8 -128, i8 -128, i8 -128, i8 127>
+; CHECK-NEXT:    [[REV:%.*]] = call <4 x i8> @llvm.vector.reverse.v4i8(<4 x i8> [[X]])
+; CHECK-NEXT:    [[R:%.*]] = icmp slt <4 x i8> [[REV]], zeroinitializer
+; CHECK-NEXT:    ret <4 x i1> [[R]]
+;
+  %x = or <4 x i8> %xx, <i8 128, i8 128, i8 128, i8 127>
+  %rev = call <4 x i8> @llvm.vector.reverse(<4 x i8> %x)
+  %r = icmp slt <4 x i8> %rev, zeroinitializer
+  ret <4 x i1> %r
+}

llvm/test/Analysis/ValueTracking/known-fpclass.ll

@@ -0,0 +1,29 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -passes=instsimplify < %s -S | FileCheck %s
+
+define <4 x i1> @vector_reverse_fpclass(<4 x double> nofpclass(nzero nan) %x) {
+; CHECK-LABEL: @vector_reverse_fpclass(
+; CHECK-NEXT:    [[X_ABS:%.*]] = call <4 x double> @llvm.fabs.v4f64(<4 x double> [[X:%.*]])
+; CHECK-NEXT:    [[OP:%.*]] = call <4 x double> @llvm.vector.reverse.v4f64(<4 x double> [[X_ABS]])
+; CHECK-NEXT:    [[CMP:%.*]] = fcmp oge <4 x double> [[OP]], zeroinitializer
+; CHECK-NEXT:    ret <4 x i1> [[CMP]]
+;
+  %x.abs = call <4 x double> @llvm.fabs.v4f64(<4 x double> %x)
+  %op = call <4 x double> @llvm.vector.reverse(<4 x double> %x.abs)
+  %cmp = fcmp oge <4 x double> %op, <double 0.0, double 0.0, double 0.0, double 0.0>
+  ret <4 x i1> %cmp
+}
+
+define <4 x i1> @vector_reverse_fpclass2(<4 x double> nofpclass(nzero) %x) {
+; CHECK-LABEL: @vector_reverse_fpclass2(
+; CHECK-NEXT:    [[X_ABS:%.*]] = call <4 x double> @llvm.fabs.v4f64(<4 x double> [[X:%.*]])
+; CHECK-NEXT:    [[OP:%.*]] = call <4 x double> @llvm.vector.reverse.v4f64(<4 x double> [[X_ABS]])
+; CHECK-NEXT:    [[CMP:%.*]] = fcmp oge <4 x double> [[OP]], zeroinitializer
+; CHECK-NEXT:    ret <4 x i1> [[CMP]]
+;
+  %x.abs = call <4 x double> @llvm.fabs.v4f64(<4 x double> %x)
+  %op = call <4 x double> @llvm.vector.reverse(<4 x double> %x.abs)
+  %cmp = fcmp oge <4 x double> %op, <double 0.0, double 0.0, double 0.0, double 0.0>
+  ret <4 x i1> %cmp
+}
+

llvm/test/Analysis/ValueTracking/known-non-zero.ll

@@ -1497,4 +1497,30 @@ define i1 @trunc_nsw_nuw_non_zero_fail(i8 %xx) {
   ret i1 %r
 }
 
+define <4 x i1> @vec_reverse_non_zero(<4 x i8> %xx) {
+; CHECK-LABEL: @vec_reverse_non_zero(
+; CHECK-NEXT:    [[X:%.*]] = add nuw <4 x i8> [[XX:%.*]], <i8 1, i8 1, i8 1, i8 1>
+; CHECK-NEXT:    [[REV:%.*]] = call <4 x i8> @llvm.vector.reverse.v4i8(<4 x i8> [[X]])
+; CHECK-NEXT:    [[R:%.*]] = icmp eq <4 x i8> [[REV]], zeroinitializer
+; CHECK-NEXT:    ret <4 x i1> [[R]]
+;
+  %x = add nuw <4 x i8> %xx, <i8 1, i8 1, i8 1, i8 1>
+  %rev = call <4 x i8> @llvm.vector.reverse(<4 x i8> %x)
+  %r = icmp eq <4 x i8> %rev, zeroinitializer
+  ret <4 x i1> %r
+}
+
+define <4 x i1> @vec_reverse_non_zero_fail(<4 x i8> %xx) {
+; CHECK-LABEL: @vec_reverse_non_zero_fail(
+; CHECK-NEXT:    [[X:%.*]] = add nuw <4 x i8> [[XX:%.*]], <i8 1, i8 0, i8 1, i8 1>
+; CHECK-NEXT:    [[REV:%.*]] = call <4 x i8> @llvm.vector.reverse.v4i8(<4 x i8> [[X]])
+; CHECK-NEXT:    [[R:%.*]] = icmp eq <4 x i8> [[REV]], zeroinitializer
+; CHECK-NEXT:    ret <4 x i1> [[R]]
+;
+  %x = add nuw <4 x i8> %xx, <i8 1, i8 0, i8 1, i8 1>
+  %rev = call <4 x i8> @llvm.vector.reverse(<4 x i8> %x)
+  %r = icmp eq <4 x i8> %rev, zeroinitializer
+  ret <4 x i1> %r
+}
+
 declare i32 @llvm.experimental.get.vector.length.i32(i32, i32, i1)