1 files changed, 277 insertions, 0 deletions
diff --git a/test/CodeGen/ARM64/shifted-sext.ll b/test/CodeGen/ARM64/shifted-sext.ll
new file mode 100644
index 0000000000..e553be5fcf
--- /dev/null
+++ b/test/CodeGen/ARM64/shifted-sext.ll
@@ -0,0 +1,277 @@
+; RUN: llc -march=arm64 -mtriple=arm64-apple-ios < %s | FileCheck %s
+;
+; <rdar://problem/13820218>
+
+define signext i16 @extendedLeftShiftcharToshortBy4(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftcharToshortBy4:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sbfm w0, [[REG]], #28, #7
+  %inc = add i8 %a, 1
+  %conv1 = sext i8 %inc to i32
+  %shl = shl nsw i32 %conv1, 4
+  %conv2 = trunc i32 %shl to i16
+  ret i16 %conv2
+}
+
+define signext i16 @extendedRightShiftcharToshortBy4(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftcharToshortBy4:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sbfm w0, [[REG]], #4, #7
+  %inc = add i8 %a, 1
+  %conv1 = sext i8 %inc to i32
+  %shr4 = lshr i32 %conv1, 4
+  %conv2 = trunc i32 %shr4 to i16
+  ret i16 %conv2
+}
+
+define signext i16 @extendedLeftShiftcharToshortBy8(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftcharToshortBy8:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sbfm w0, [[REG]], #24, #7
+  %inc = add i8 %a, 1
+  %conv1 = sext i8 %inc to i32
+  %shl = shl nsw i32 %conv1, 8
+  %conv2 = trunc i32 %shl to i16
+  ret i16 %conv2
+}
+
+define signext i16 @extendedRightShiftcharToshortBy8(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftcharToshortBy8:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sxtb [[REG]], [[REG]]
+; CHECK: asr w0, [[REG]], #8
+  %inc = add i8 %a, 1
+  %conv1 = sext i8 %inc to i32
+  %shr4 = lshr i32 %conv1, 8
+  %conv2 = trunc i32 %shr4 to i16
+  ret i16 %conv2
+}
+
+define i32 @extendedLeftShiftcharTointBy4(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftcharTointBy4:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sbfm w0, [[REG]], #28, #7
+  %inc = add i8 %a, 1
+  %conv = sext i8 %inc to i32
+  %shl = shl nsw i32 %conv, 4
+  ret i32 %shl
+}
+
+define i32 @extendedRightShiftcharTointBy4(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftcharTointBy4:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sbfm w0, [[REG]], #4, #7
+  %inc = add i8 %a, 1
+  %conv = sext i8 %inc to i32
+  %shr = ashr i32 %conv, 4
+  ret i32 %shr
+}
+
+define i32 @extendedLeftShiftcharTointBy8(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftcharTointBy8:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sbfm w0, [[REG]], #24, #7
+  %inc = add i8 %a, 1
+  %conv = sext i8 %inc to i32
+  %shl = shl nsw i32 %conv, 8
+  ret i32 %shl
+}
+
+define i32 @extendedRightShiftcharTointBy8(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftcharTointBy8:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sxtb [[REG]], [[REG]]
+; CHECK: asr w0, [[REG]], #8
+  %inc = add i8 %a, 1
+  %conv = sext i8 %inc to i32
+  %shr = ashr i32 %conv, 8
+  ret i32 %shr
+}
+
+define i64 @extendedLeftShiftcharToint64By4(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftcharToint64By4:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sbfm x0, x[[REG]], #60, #7
+  %inc = add i8 %a, 1
+  %conv = sext i8 %inc to i64
+  %shl = shl nsw i64 %conv, 4
+  ret i64 %shl
+}
+
+define i64 @extendedRightShiftcharToint64By4(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftcharToint64By4:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sbfm x0, x[[REG]], #4, #7
+  %inc = add i8 %a, 1
+  %conv = sext i8 %inc to i64
+  %shr = ashr i64 %conv, 4
+  ret i64 %shr
+}
+
+define i64 @extendedLeftShiftcharToint64By8(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftcharToint64By8:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sbfm x0, x[[REG]], #56, #7
+  %inc = add i8 %a, 1
+  %conv = sext i8 %inc to i64
+  %shl = shl nsw i64 %conv, 8
+  ret i64 %shl
+}
+
+define i64 @extendedRightShiftcharToint64By8(i8 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftcharToint64By8:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sxtb x[[REG]], x[[REG]]
+; CHECK: asr x0, x[[REG]], #8
+  %inc = add i8 %a, 1
+  %conv = sext i8 %inc to i64
+  %shr = ashr i64 %conv, 8
+  ret i64 %shr
+}
+
+define i32 @extendedLeftShiftshortTointBy4(i16 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftshortTointBy4:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sbfm w0, [[REG]], #28, #15
+  %inc = add i16 %a, 1
+  %conv = sext i16 %inc to i32
+  %shl = shl nsw i32 %conv, 4
+  ret i32 %shl
+}
+
+define i32 @extendedRightShiftshortTointBy4(i16 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftshortTointBy4:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sbfm w0, [[REG]], #4, #15
+  %inc = add i16 %a, 1
+  %conv = sext i16 %inc to i32
+  %shr = ashr i32 %conv, 4
+  ret i32 %shr
+}
+
+define i32 @extendedLeftShiftshortTointBy16(i16 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftshortTointBy16:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: lsl w0, [[REG]], #16
+  %inc = add i16 %a, 1
+  %conv2 = zext i16 %inc to i32
+  %shl = shl nuw i32 %conv2, 16
+  ret i32 %shl
+}
+
+define i32 @extendedRightShiftshortTointBy16(i16 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftshortTointBy16:
+; CHECK: add [[REG:w[0-9]+]], w0, #1
+; CHECK: sxth [[REG]], [[REG]]
+; CHECK: asr w0, [[REG]], #16
+  %inc = add i16 %a, 1
+  %conv = sext i16 %inc to i32
+  %shr = ashr i32 %conv, 16
+  ret i32 %shr
+}
+
+define i64 @extendedLeftShiftshortToint64By4(i16 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftshortToint64By4:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sbfm x0, x[[REG]], #60, #15
+  %inc = add i16 %a, 1
+  %conv = sext i16 %inc to i64
+  %shl = shl nsw i64 %conv, 4
+  ret i64 %shl
+}
+
+define i64 @extendedRightShiftshortToint64By4(i16 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftshortToint64By4:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sbfm x0, x[[REG]], #4, #15
+  %inc = add i16 %a, 1
+  %conv = sext i16 %inc to i64
+  %shr = ashr i64 %conv, 4
+  ret i64 %shr
+}
+
+define i64 @extendedLeftShiftshortToint64By16(i16 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftshortToint64By16:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sbfm x0, x[[REG]], #48, #15
+  %inc = add i16 %a, 1
+  %conv = sext i16 %inc to i64
+  %shl = shl nsw i64 %conv, 16
+  ret i64 %shl
+}
+
+define i64 @extendedRightShiftshortToint64By16(i16 signext %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftshortToint64By16:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sxth x[[REG]], x[[REG]]
+; CHECK: asr x0, x[[REG]], #16
+  %inc = add i16 %a, 1
+  %conv = sext i16 %inc to i64
+  %shr = ashr i64 %conv, 16
+  ret i64 %shr
+}
+
+define i64 @extendedLeftShiftintToint64By4(i32 %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftintToint64By4:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sbfm x0, x[[REG]], #60, #31
+  %inc = add nsw i32 %a, 1
+  %conv = sext i32 %inc to i64
+  %shl = shl nsw i64 %conv, 4
+  ret i64 %shl
+}
+
+define i64 @extendedRightShiftintToint64By4(i32 %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftintToint64By4:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sbfm x0, x[[REG]], #4, #31
+  %inc = add nsw i32 %a, 1
+  %conv = sext i32 %inc to i64
+  %shr = ashr i64 %conv, 4
+  ret i64 %shr
+}
+
+define i64 @extendedLeftShiftintToint64By32(i32 %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedLeftShiftintToint64By32:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: lsl x0, x[[REG]], #32
+  %inc = add nsw i32 %a, 1
+  %conv2 = zext i32 %inc to i64
+  %shl = shl nuw i64 %conv2, 32
+  ret i64 %shl
+}
+
+define i64 @extendedRightShiftintToint64By32(i32 %a) nounwind readnone ssp {
+entry:
+; CHECK-LABEL: extendedRightShiftintToint64By32:
+; CHECK: add w[[REG:[0-9]+]], w0, #1
+; CHECK: sxtw x[[REG]], x[[REG]]
+; CHECK: asr x0, x[[REG]], #32
+  %inc = add nsw i32 %a, 1
+  %conv = sext i32 %inc to i64
+  %shr = ashr i64 %conv, 32
+  ret i64 %shr
+}