1 files changed, 161 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/select.ll b/test/Transforms/InstSimplify/select.ll
new file mode 100644
index 0000000..1d45e57
--- /dev/null
+++ b/test/Transforms/InstSimplify/select.ll
@@ -0,0 +1,161 @@
+; RUN: opt < %s -instsimplify -S | FileCheck %s
+
+define i32 @test1(i32 %x) {
+  %and = and i32 %x, 1
+  %cmp = icmp eq i32 %and, 0
+  %and1 = and i32 %x, -2
+  %and1.x = select i1 %cmp, i32 %and1, i32 %x
+  ret i32 %and1.x
+; CHECK-LABEL: @test1(
+; CHECK: ret i32 %x
+}
+
+define i32 @test2(i32 %x) {
+  %and = and i32 %x, 1
+  %cmp = icmp ne i32 %and, 0
+  %and1 = and i32 %x, -2
+  %and1.x = select i1 %cmp, i32 %x, i32 %and1
+  ret i32 %and1.x
+; CHECK-LABEL: @test2(
+; CHECK: ret i32 %x
+}
+
+define i32 @test3(i32 %x) {
+  %and = and i32 %x, 1
+  %cmp = icmp ne i32 %and, 0
+  %and1 = and i32 %x, -2
+  %and1.x = select i1 %cmp, i32 %and1, i32 %x
+  ret i32 %and1.x
+; CHECK-LABEL: @test3(
+; CHECK: %[[and:.*]] = and i32 %x, -2
+; CHECK: ret i32 %[[and]]
+}
+
+define i32 @test4(i32 %X) {
+  %cmp = icmp slt i32 %X, 0
+  %or = or i32 %X, -2147483648
+  %cond = select i1 %cmp, i32 %X, i32 %or
+  ret i32 %cond
+; CHECK-LABEL: @test4
+; CHECK: %[[or:.*]] = or i32 %X, -2147483648
+; CHECK: ret i32 %[[or]]
+}
+
+define i32 @test5(i32 %X) {
+  %cmp = icmp slt i32 %X, 0
+  %or = or i32 %X, -2147483648
+  %cond = select i1 %cmp, i32 %or, i32 %X
+  ret i32 %cond
+; CHECK-LABEL: @test5
+; CHECK: ret i32 %X
+}
+
+define i32 @test6(i32 %X) {
+  %cmp = icmp slt i32 %X, 0
+  %and = and i32 %X, 2147483647
+  %cond = select i1 %cmp, i32 %and, i32 %X
+  ret i32 %cond
+; CHECK-LABEL: @test6
+; CHECK: %[[and:.*]] = and i32 %X, 2147483647
+; CHECK: ret i32 %[[and]]
+}
+
+define i32 @test7(i32 %X) {
+  %cmp = icmp slt i32 %X, 0
+  %and = and i32 %X, 2147483647
+  %cond = select i1 %cmp, i32 %X, i32 %and
+  ret i32 %cond
+; CHECK-LABEL: @test7
+; CHECK: ret i32 %X
+}
+
+define i32 @test8(i32 %X) {
+  %cmp = icmp sgt i32 %X, -1
+  %or = or i32 %X, -2147483648
+  %cond = select i1 %cmp, i32 %X, i32 %or
+  ret i32 %cond
+; CHECK-LABEL: @test8
+; CHECK: ret i32 %X
+}
+
+define i32 @test9(i32 %X) {
+  %cmp = icmp sgt i32 %X, -1
+  %or = or i32 %X, -2147483648
+  %cond = select i1 %cmp, i32 %or, i32 %X
+  ret i32 %cond
+; CHECK-LABEL: @test9
+; CHECK: %[[or:.*]] = or i32 %X, -2147483648
+; CHECK: ret i32 %[[or]]
+}
+
+define i32 @test10(i32 %X) {
+  %cmp = icmp sgt i32 %X, -1
+  %and = and i32 %X, 2147483647
+  %cond = select i1 %cmp, i32 %and, i32 %X
+  ret i32 %cond
+; CHECK-LABEL: @test10
+; CHECK: ret i32 %X
+}
+
+define i32 @test11(i32 %X) {
+  %cmp = icmp sgt i32 %X, -1
+  %and = and i32 %X, 2147483647
+  %cond = select i1 %cmp, i32 %X, i32 %and
+  ret i32 %cond
+; CHECK-LABEL: @test11
+; CHECK: %[[and:.*]] = and i32 %X, 2147483647
+; CHECK: ret i32 %[[and]]
+}
+
+; CHECK-LABEL: @select_icmp_and_8_eq_0_or_8(
+; CHECK-NEXT: [[OR:%[a-z0-9]+]] = or i32 %x, 8
+; CHECK-NEXT: ret i32 [[OR]]
+define i32 @select_icmp_and_8_eq_0_or_8(i32 %x) {
+  %and = and i32 %x, 8
+  %cmp = icmp eq i32 %and, 0
+  %or = or i32 %x, 8
+  %or.x = select i1 %cmp, i32 %or, i32 %x
+  ret i32 %or.x
+}
+
+; CHECK-LABEL: @select_icmp_and_8_ne_0_and_not_8(
+; CHECK-NEXT: [[AND:%[a-z0-9]+]] = and i32 %x, -9
+; CHECK-NEXT: ret i32 [[AND]]
+define i32 @select_icmp_and_8_ne_0_and_not_8(i32 %x) {
+  %and = and i32 %x, 8
+  %cmp = icmp eq i32 %and, 0
+  %and1 = and i32 %x, -9
+  %x.and1 = select i1 %cmp, i32 %x, i32 %and1
+  ret i32 %x.and1
+}
+
+; CHECK-LABEL: @select_icmp_and_8_eq_0_and_not_8(
+; CHECK-NEXT: ret i32 %x
+define i32 @select_icmp_and_8_eq_0_and_not_8(i32 %x) {
+  %and = and i32 %x, 8
+  %cmp = icmp eq i32 %and, 0
+  %and1 = and i32 %x, -9
+  %and1.x = select i1 %cmp, i32 %and1, i32 %x
+  ret i32 %and1.x
+}
+
+; CHECK-LABEL: @select_icmp_x_and_8_eq_0_y_and_not_8(
+; CHECK: select i1 %cmp, i64 %y, i64 %and1
+define i64 @select_icmp_x_and_8_eq_0_y_and_not_8(i32 %x, i64 %y) {
+  %and = and i32 %x, 8
+  %cmp = icmp eq i32 %and, 0
+  %and1 = and i64 %y, -9
+  %y.and1 = select i1 %cmp, i64 %y, i64 %and1
+  ret i64 %y.and1
+}
+
+; CHECK-LABEL: @select_icmp_x_and_8_ne_0_y_and_not_8(
+; CHECK: select i1 %cmp, i64 %and1, i64 %y
+define i64 @select_icmp_x_and_8_ne_0_y_and_not_8(i32 %x, i64 %y) {
+  %and = and i32 %x, 8
+  %cmp = icmp eq i32 %and, 0
+  %and1 = and i64 %y, -9
+  %and1.y = select i1 %cmp, i64 %and1, i64 %y
+  ret i64 %and1.y
+}
+