Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/X86/fold-and-shift.ll

@@ -1,77 +0,0 @@
-; RUN: llc < %s -mtriple=i686-- | FileCheck %s
-
-define i32 @t1(i8* %X, i32 %i) {
-; CHECK-LABEL: t1:
-; CHECK-NOT: and
-; CHECK: movzbl
-; CHECK: movl (%{{...}},%{{...}},4),
-; CHECK: ret
-
-entry:
-  %tmp2 = shl i32 %i, 2
-  %tmp4 = and i32 %tmp2, 1020
-  %tmp7 = getelementptr i8, i8* %X, i32 %tmp4
-  %tmp78 = bitcast i8* %tmp7 to i32*
-  %tmp9 = load i32, i32* %tmp78
-  ret i32 %tmp9
-}
-
-define i32 @t2(i16* %X, i32 %i) {
-; CHECK-LABEL: t2:
-; CHECK-NOT: and
-; CHECK: movzwl
-; CHECK: movl (%{{...}},%{{...}},4),
-; CHECK: ret
-
-entry:
-  %tmp2 = shl i32 %i, 1
-  %tmp4 = and i32 %tmp2, 131070
-  %tmp7 = getelementptr i16, i16* %X, i32 %tmp4
-  %tmp78 = bitcast i16* %tmp7 to i32*
-  %tmp9 = load i32, i32* %tmp78
-  ret i32 %tmp9
-}
-
-define i32 @t3(i16* %i.ptr, i32* %arr) {
-; This case is tricky. The lshr followed by a gep will produce a lshr followed
-; by an and to remove the low bits. This can be simplified by doing the lshr by
-; a greater constant and using the addressing mode to scale the result back up.
-; To make matters worse, because of the two-phase zext of %i and their reuse in
-; the function, the DAG can get confusing trying to re-use both of them and
-; prevent easy analysis of the mask in order to match this.
-; CHECK-LABEL: t3:
-; CHECK-NOT: and
-; CHECK: shrl
-; CHECK: addl (%{{...}},%{{...}},4),
-; CHECK: ret
-
-entry:
-  %i = load i16, i16* %i.ptr
-  %i.zext = zext i16 %i to i32
-  %index = lshr i32 %i.zext, 11
-  %val.ptr = getelementptr inbounds i32, i32* %arr, i32 %index
-  %val = load i32, i32* %val.ptr
-  %sum = add i32 %val, %i.zext
-  ret i32 %sum
-}
-
-define i32 @t4(i16* %i.ptr, i32* %arr) {
-; A version of @t3 that has more zero extends and more re-use of intermediate
-; values. This exercise slightly different bits of canonicalization.
-; CHECK-LABEL: t4:
-; CHECK-NOT: and
-; CHECK: shrl
-; CHECK: addl (%{{...}},%{{...}},4),
-; CHECK: ret
-
-entry:
-  %i = load i16, i16* %i.ptr
-  %i.zext = zext i16 %i to i32
-  %index = lshr i32 %i.zext, 11
-  %index.zext = zext i32 %index to i64
-  %val.ptr = getelementptr inbounds i32, i32* %arr, i64 %index.zext
-  %val = load i32, i32* %val.ptr
-  %sum.1 = add i32 %val, %i.zext
-  %sum.2 = add i32 %sum.1, %index
-  ret i32 %sum.2
-}