1 files changed, 87 insertions, 2 deletions
diff --git a/llvm/test/Transforms/InstCombine/bitreverse-fold.ll b/llvm/test/Transforms/InstCombine/bitreverse-fold.ll
index ad7fc3a7464..ecdfbc8cb5f 100644
--- a/llvm/test/Transforms/InstCombine/bitreverse-fold.ll
+++ b/llvm/test/Transforms/InstCombine/bitreverse-fold.ll
@@ -1,11 +1,96 @@
 ; RUN: opt < %s -instcombine -S | FileCheck %s
 
-define i32 @test1(i32 %p) {
-; CHECK-LABEL: @test1
+define i32 @identity_bitreverse_i32(i32 %p) {
+; CHECK-LABEL: @identity_bitreverse_i32(
 ; CHECK-NEXT: ret i32 %p
   %a = call i32 @llvm.bitreverse.i32(i32 %p)
   %b = call i32 @llvm.bitreverse.i32(i32 %a)
   ret i32 %b
 }
 
+; CHECK-LABEL: @identity_bitreverse_v2i32(
+; CHECK-NEXT: ret <2 x i32> %p
+define <2 x i32> @identity_bitreverse_v2i32(<2 x i32> %p) {
+  %a = call <2 x i32> @llvm.bitreverse.v2i32(<2 x i32> %p)
+  %b = call <2 x i32> @llvm.bitreverse.v2i32(<2 x i32> %a)
+  ret <2 x i32> %b
+}
+
+; CHECK-LABEL: @reverse_0_i32(
+; CHECK-NEXT: ret i32 0
+define i32 @reverse_0_i32() {
+  %x = call i32 @llvm.bitreverse.i32(i32 0)
+  ret i32 %x
+}
+
+; CHECK-LABEL: @reverse_1_i32(
+; CHECK-NEXT: ret i32 -2147483648
+define i32 @reverse_1_i32() {
+  %x = call i32 @llvm.bitreverse.i32(i32 1)
+  ret i32 %x
+}
+
+; CHECK-LABEL: @reverse_neg1_i32(
+; CHECK-NEXT: ret i32 -1
+define i32 @reverse_neg1_i32() {
+  %x = call i32 @llvm.bitreverse.i32(i32 -1)
+  ret i32 %x
+}
+
+; CHECK-LABEL: @reverse_false_i1(
+; CHECK-NEXT: ret i1 false
+define i1 @reverse_false_i1() {
+  %x = call i1 @llvm.bitreverse.i1(i1 false)
+  ret i1 %x
+}
+
+; CHECK-LABEL: @reverse_true_i1(
+; CHECK-NEXT: ret i1 true
+define i1 @reverse_true_i1() {
+  %x = call i1 @llvm.bitreverse.i1(i1 true)
+  ret i1 %x
+}
+
+; CHECK-LABEL: @reverse_false_v2i1(
+; CHECK-NEXT: ret <2 x i1> zeroinitializer
+define <2 x i1> @reverse_false_v2i1() {
+  %x = call <2  x i1> @llvm.bitreverse.v2i1(<2 x i1> zeroinitializer)
+  ret <2 x i1> %x
+}
+
+; CHECK-LABEL: @reverse_true_v2i1(
+; CHECK-NEXT: ret <2 x i1> <i1 true, i1 true>
+define <2 x i1> @reverse_true_v2i1() {
+  %x = call <2 x i1> @llvm.bitreverse.v2i1(<2 x i1> <i1 true, i1 true>)
+  ret <2 x i1> %x
+}
+
+; CHECK-LABEL: @bitreverse_920_1234_v2i32(
+; CHECK-NEXT: ret <2 x i32> <i32 432013312, i32 1260388352>
+define <2 x i32> @bitreverse_920_1234_v2i32() {
+  %x = call <2 x i32> @llvm.bitreverse.v2i32(<2 x i32> <i32 920, i32 1234>)
+  ret <2 x i32> %x
+}
+
+; CHECK-LABEL: @reverse_100_i3(
+; CHECK-NEXT: ret i3 1
+define i3 @reverse_100_i3() {
+  %x = call i3 @llvm.bitreverse.i3(i3 100)
+  ret i3 %x
+}
+
+; CHECK-LABEL: @reverse_6_3_v2i3(
+; CHECK-NEXT: ret <2 x i3> <i3 3, i3 -2>
+define <2 x i3> @reverse_6_3_v2i3() {
+  %x = call <2  x i3> @llvm.bitreverse.v2i3(<2 x i3> <i3 6, i3 3>)
+  ret <2 x i3> %x
+}
+
+declare i1 @llvm.bitreverse.i1(i1) readnone
+declare <2 x i1> @llvm.bitreverse.v2i1(<2 x i1>) readnone
+
+declare i3 @llvm.bitreverse.i3(i3) readnone
+declare <2 x i3> @llvm.bitreverse.v2i3(<2 x i3>) readnone
+
 declare i32 @llvm.bitreverse.i32(i32) readnone
+declare <2 x i32> @llvm.bitreverse.v2i32(<2 x i32>) readnone