Imported Upstream version 5.18.0.234

Former-commit-id: 8071ec1a8c5eaa9be24b41745add19297608001f

external/llvm/test/Transforms/InstCombine/2004-02-23-ShiftShiftOverflow.ll

@@ -1,15 +0,0 @@
-; RUN: opt < %s -instcombine -S | not grep 34
-
-define i32 @test(i32 %X) {
-        ; Do not fold into shr X, 34, as this uses undefined behavior!
-        %Y = ashr i32 %X, 17            ; <i32> [#uses=1]
-        %Z = ashr i32 %Y, 17            ; <i32> [#uses=1]
-        ret i32 %Z
-}
-
-define i32 @test2(i32 %X) {
-        ; Do not fold into shl X, 34, as this uses undefined behavior!
-        %Y = shl i32 %X, 17             ; <i32> [#uses=1]
-        %Z = shl i32 %Y, 17             ; <i32> [#uses=1]
-        ret i32 %Z
-}