; Tests to make sure elimination of casts is working correctly
-; RUN: llvm-as < %s | opt -instcombine -disable-output &&
-; RUN: llvm-as < %s | opt -instcombine | llvm-dis | notcast '' '%c1.*'
+; RUN: opt < %s -instcombine -S | FileCheck %s
-long %test_sext_zext(short %A) {
- %c1 = zext short %A to uint
- %c2 = sext uint %c1 to long
- ret long %c2
+define i64 @test_sext_zext(i16 %A) {
+ %c1 = zext i16 %A to i32 ; <i32> [#uses=1]
+ %c2 = sext i32 %c1 to i64 ; <i64> [#uses=1]
+ ret i64 %c2
+
+; CHECK-LABEL: @test_sext_zext
+; CHECK-NOT: %c1
+; CHECK: %c2 = zext i16 %A to i64
+; CHECK: ret i64 %c2
+}
+
+define <2 x i64> @test2(<2 x i1> %A) {
+ %xor = xor <2 x i1> %A, <i1 true, i1 true>
+ %zext = zext <2 x i1> %xor to <2 x i64>
+ ret <2 x i64> %zext
+
+; CHECK-LABEL: @test2
+; CHECK-NEXT: zext <2 x i1> %A to <2 x i64>
+; CHECK-NEXT: xor <2 x i64> %1, <i64 1, i64 1>
+}
+
+define <2 x i64> @test3(<2 x i64> %A) {
+ %trunc = trunc <2 x i64> %A to <2 x i32>
+ %and = and <2 x i32> %trunc, <i32 23, i32 42>
+ %zext = zext <2 x i32> %and to <2 x i64>
+ ret <2 x i64> %zext
+
+; CHECK-LABEL: @test3
+; CHECK-NEXT: and <2 x i64> %A, <i64 23, i64 42>
+}
+
+define <2 x i64> @test4(<2 x i64> %A) {
+ %trunc = trunc <2 x i64> %A to <2 x i32>
+ %and = and <2 x i32> %trunc, <i32 23, i32 42>
+ %xor = xor <2 x i32> %and, <i32 23, i32 42>
+ %zext = zext <2 x i32> %xor to <2 x i64>
+ ret <2 x i64> %zext
+
+; CHECK-LABEL: @test4
+; CHECK-NEXT: xor <2 x i64> %A, <i64 4294967295, i64 4294967295>
+; CHECK-NEXT: and <2 x i64> %1, <i64 23, i64 42>
}