Revert r191393 since it caused pr17380.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191438 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 181 deletions

diff --git a/test/CodeGen/X86/dagcombine-shifts.ll b/test/CodeGen/X86/dagcombine-shifts.ll
deleted file mode 100644
index 0126edc275..0000000000
--- a/test/CodeGen/X86/dagcombine-shifts.ll
+++ /dev/null
@@ -1,181 +0,0 @@
-; RUN: llc < %s -mtriple=x86_64-linux-gnu | FileCheck %s
-
-; fold (shl (zext (lshr (A, X))), X) -> (zext (shl (lshr (A, X)), X))
-
-; Canolicalize the sequence shl/zext/lshr performing the zeroextend
-; as the last instruction of the sequence.
-; This will help DAGCombiner to identify and then fold the sequence
-; of shifts into a single AND.
-; This transformation is profitable if the shift amounts are the same
-; and if there is only one use of the zext.
-
-define i16 @fun1(i8 zeroext %v) {
-entry:
-  %shr = lshr i8 %v, 4
-  %ext = zext i8 %shr to i16
-  %shl = shl i16 %ext, 4
-  ret i16 %shl
-}
-
-; CHECK-LABEL: @fun1
-; CHECK: and
-; CHECK-NOT: shr
-; CHECK-NOT: shl
-; CHECK: ret
-
-define i32 @fun2(i8 zeroext %v) {
-entry:
-  %shr = lshr i8 %v, 4
-  %ext = zext i8 %shr to i32
-  %shl = shl i32 %ext, 4
-  ret i32 %shl
-}
-
-; CHECK-LABEL: @fun2
-; CHECK: and
-; CHECK-NOT: shr
-; CHECK-NOT: shl
-; CHECK: ret
-
-define i32 @fun3(i16 zeroext %v) {
-entry:
-  %shr = lshr i16 %v, 4
-  %ext = zext i16 %shr to i32
-  %shl = shl i32 %ext, 4
-  ret i32 %shl
-}
-
-; CHECK-LABEL: @fun3
-; CHECK: and
-; CHECK-NOT: shr
-; CHECK-NOT: shl
-; CHECK: ret
-
-define i64 @fun4(i8 zeroext %v) {
-entry:
-  %shr = lshr i8 %v, 4
-  %ext = zext i8 %shr to i64
-  %shl = shl i64 %ext, 4
-  ret i64 %shl
-}
-
-; CHECK-LABEL: @fun4
-; CHECK: and
-; CHECK-NOT: shr
-; CHECK-NOT: shl
-; CHECK: ret
-
-define i64 @fun5(i16 zeroext %v) {
-entry:
-  %shr = lshr i16 %v, 4
-  %ext = zext i16 %shr to i64
-  %shl = shl i64 %ext, 4
-  ret i64 %shl
-}
-
-; CHECK-LABEL: @fun5
-; CHECK: and
-; CHECK-NOT: shr
-; CHECK-NOT: shl
-; CHECK: ret
-
-define i64 @fun6(i32 zeroext %v) {
-entry:
-  %shr = lshr i32 %v, 4
-  %ext = zext i32 %shr to i64
-  %shl = shl i64 %ext, 4
-  ret i64 %shl
-}
-
-; CHECK-LABEL: @fun6
-; CHECK: and
-; CHECK-NOT: shr
-; CHECK-NOT: shl
-; CHECK: ret
-
-; Don't fold the pattern if we use arithmetic shifts.
-
-define i64 @fun7(i8 zeroext %v) {
-entry:
-  %shr = ashr i8 %v, 4
-  %ext = zext i8 %shr to i64
-  %shl = shl i64 %ext, 4
-  ret i64 %shl
-}
-
-; CHECK-LABEL: @fun7
-; CHECK: sar
-; CHECK: shl
-; CHECK: ret
-
-define i64 @fun8(i16 zeroext %v) {
-entry:
-  %shr = ashr i16 %v, 4
-  %ext = zext i16 %shr to i64
-  %shl = shl i64 %ext, 4
-  ret i64 %shl
-}
-
-; CHECK-LABEL: @fun8
-; CHECK: sar
-; CHECK: shl
-; CHECK: ret
-
-define i64 @fun9(i32 zeroext %v) {
-entry:
-  %shr = ashr i32 %v, 4
-  %ext = zext i32 %shr to i64
-  %shl = shl i64 %ext, 4
-  ret i64 %shl
-}
-
-; CHECK-LABEL: @fun9
-; CHECK: sar
-; CHECK: shl
-; CHECK: ret
-
-; Don't fold the pattern if there is more than one use of the
-; operand in input to the shift left.
-
-define i64 @fun10(i8 zeroext %v) {
-entry:
-  %shr = lshr i8 %v, 4
-  %ext = zext i8 %shr to i64
-  %shl = shl i64 %ext, 4
-  %add = add i64 %shl, %ext
-  ret i64 %add
-}
-
-; CHECK-LABEL: @fun10
-; CHECK: shr
-; CHECK: shl
-; CHECK: ret
-
-define i64 @fun11(i16 zeroext %v) {
-entry:
-  %shr = lshr i16 %v, 4
-  %ext = zext i16 %shr to i64
-  %shl = shl i64 %ext, 4
-  %add = add i64 %shl, %ext
-  ret i64 %add
-}
-
-; CHECK-LABEL: @fun11
-; CHECK: shr
-; CHECK: shl
-; CHECK: ret
-
-define i64 @fun12(i32 zeroext %v) {
-entry:
-  %shr = lshr i32 %v, 4
-  %ext = zext i32 %shr to i64
-  %shl = shl i64 %ext, 4
-  %add = add i64 %shl, %ext
-  ret i64 %add
-}
-
-; CHECK-LABEL: @fun12
-; CHECK: shr
-; CHECK: shl
-; CHECK: ret
-