[AArch64] Move tests from r271677 to a more appropriately named file. NFC.
llvm-svn: 271718
diff --git a/llvm/test/CodeGen/AArch64/bitfield-extract.ll b/llvm/test/CodeGen/AArch64/bitfield-extract.ll
index e9b3175..5e727b6 100644
--- a/llvm/test/CodeGen/AArch64/bitfield-extract.ll
+++ b/llvm/test/CodeGen/AArch64/bitfield-extract.ll
@@ -8,3 +8,91 @@
%res = add i64 %ext, 1
ret i64 %res
}
+
+; CHECK-LABEL: @test2
+; CHECK: sbfx w0, w0, #23, #8
+define signext i8 @test2(i32 %a) {
+ %tmp = ashr i32 %a, 23
+ %res = trunc i32 %tmp to i8
+ ret i8 %res
+}
+
+; CHECK-LABEL: @test3
+; CHECK: sbfx w0, w0, #23, #8
+define signext i8 @test3(i32 %a) {
+ %tmp = lshr i32 %a, 23
+ %res = trunc i32 %tmp to i8
+ ret i8 %res
+}
+
+; CHECK-LABEL: @test4
+; CHECK: sbfx w0, w0, #15, #16
+define signext i16 @test4(i32 %a) {
+ %tmp = lshr i32 %a, 15
+ %res = trunc i32 %tmp to i16
+ ret i16 %res
+}
+
+; CHECK-LABEL: @test5
+; CHECK: sbfx w0, w0, #16, #8
+define signext i8 @test5(i64 %a) {
+ %tmp = lshr i64 %a, 16
+ %res = trunc i64 %tmp to i8
+ ret i8 %res
+}
+
+; CHECK-LABEL: @test6
+; CHECK: sbfx x0, x0, #30, #8
+define signext i8 @test6(i64 %a) {
+ %tmp = lshr i64 %a, 30
+ %res = trunc i64 %tmp to i8
+ ret i8 %res
+}
+
+; CHECK-LABEL: @test7
+; CHECK: sbfx x0, x0, #23, #16
+define signext i16 @test7(i64 %a) {
+ %tmp = lshr i64 %a, 23
+ %res = trunc i64 %tmp to i16
+ ret i16 %res
+}
+
+; CHECK-LABEL: @test8
+; CHECK: asr w0, w0, #25
+define signext i8 @test8(i32 %a) {
+ %tmp = ashr i32 %a, 25
+ %res = trunc i32 %tmp to i8
+ ret i8 %res
+}
+
+; CHECK-LABEL: @test9
+; CHECK: lsr w0, w0, #25
+define signext i8 @test9(i32 %a) {
+ %tmp = lshr i32 %a, 25
+ %res = trunc i32 %tmp to i8
+ ret i8 %res
+}
+
+; CHECK-LABEL: @test10
+; CHECK: lsr x0, x0, #49
+define signext i16 @test10(i64 %a) {
+ %tmp = lshr i64 %a, 49
+ %res = trunc i64 %tmp to i16
+ ret i16 %res
+}
+
+; SHR with multiple uses is fine as SXTH and SBFX are both aliases of SBFM.
+; However, allowing the transformation means the SHR and SBFX can execute in
+; parallel.
+;
+; CHECK-LABEL: @test11
+; CHECK: lsr x1, x0, #23
+; CHECK: sbfx x0, x0, #23, #16
+define void @test11(i64 %a) {
+ %tmp = lshr i64 %a, 23
+ %res = trunc i64 %tmp to i16
+ call void @use(i16 %res, i64 %tmp)
+ ret void
+}
+
+declare void @use(i16 signext, i64)