Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/LoopUnroll/2011-08-08-PhiUpdate.ll

@@ -1,103 +0,0 @@
-; RUN: opt < %s -loop-unroll -S -unroll-count=4 | FileCheck %s
-; Test phi update after partial unroll.
-
-declare i1 @check() nounwind
-
-; CHECK: @test
-; CHECK: if.else:
-; CHECK: if.then.loopexit
-; CHECK: %sub5.lcssa = phi i32 [ %sub{{.*}}, %if.else{{.*}} ], [ %sub{{.*}}, %if.else{{.*}} ], [ %sub{{.*}}, %if.else{{.*}} ], [ %sub{{.*}}, %if.else{{.*}} ]
-; CHECK: if.else.3
-define void @test1(i32 %i, i32 %j) nounwind uwtable ssp {
-entry:
-  %cond1 = call zeroext i1 @check()
-  br i1 %cond1, label %if.then, label %if.else.lr.ph
-
-if.else.lr.ph:                                    ; preds = %entry
-  br label %if.else
-
-if.else:                                          ; preds = %if.else, %if.else.lr.ph
-  %sub = phi i32 [ %i, %if.else.lr.ph ], [ %sub5, %if.else ]
-  %sub5 = sub i32 %sub, %j
-  %cond2 = call zeroext i1 @check()
-  br i1 %cond2, label %if.then, label %if.else
-
-if.then:                                          ; preds = %if.else, %entry
-  %i.tr = phi i32 [ %i, %entry ], [ %sub5, %if.else ]
-  ret void
-
-}
-
-; PR7318: assertion failure after doing a simple loop unroll
-;
-; CHECK-LABEL: @test2(
-; CHECK: bb1.bb2_crit_edge:
-; CHECK: %.lcssa = phi i32 [ %{{[2468]}}, %bb1{{.*}} ], [ %{{[2468]}}, %bb1{{.*}} ], [ %{{[2468]}}, %bb1{{.*}} ], [ %{{[2468]}}, %bb1{{.*}} ]
-; CHECK: bb1.3:
-define i32 @test2(i32* nocapture %p, i32 %n) nounwind readonly {
-entry:
-  %0 = icmp sgt i32 %n, 0                         ; <i1> [#uses=1]
-  br i1 %0, label %bb.nph, label %bb2
-
-bb.nph:                                           ; preds = %entry
-  %tmp = zext i32 %n to i64                       ; <i64> [#uses=1]
-  br label %bb
-
-bb:                                               ; preds = %bb.nph, %bb1
-  %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %bb1 ] ; <i64> [#uses=2]
-  %s.01 = phi i32 [ 0, %bb.nph ], [ %2, %bb1 ]    ; <i32> [#uses=1]
-  %scevgep = getelementptr i32, i32* %p, i64 %indvar   ; <i32*> [#uses=1]
-  %1 = load i32, i32* %scevgep, align 1                ; <i32> [#uses=1]
-  %2 = add nsw i32 %1, %s.01                      ; <i32> [#uses=2]
-  br label %bb1
-
-bb1:                                              ; preds = %bb
-  %indvar.next = add i64 %indvar, 1               ; <i64> [#uses=2]
-  %exitcond = icmp ne i64 %indvar.next, %tmp      ; <i1> [#uses=1]
-  br i1 %exitcond, label %bb, label %bb1.bb2_crit_edge
-
-bb1.bb2_crit_edge:                                ; preds = %bb1
-  %.lcssa = phi i32 [ %2, %bb1 ]                  ; <i32> [#uses=1]
-  br label %bb2
-
-bb2:                                              ; preds = %bb1.bb2_crit_edge, %entry
-  %s.0.lcssa = phi i32 [ %.lcssa, %bb1.bb2_crit_edge ], [ 0, %entry ] ; <i32> [#uses=1]
-  ret i32 %s.0.lcssa
-}
-
-; Check phi update for loop with an early-exit.
-;
-; CHECK-LABEL: @test3(
-; CHECK: return.loopexit:
-; CHECK: %tmp7.i.lcssa = phi i32 [ %tmp7.i{{.*}}, %land.lhs.true{{.*}} ], [ %tmp7.i{{.*}}, %land.lhs.true{{.*}} ], [ %tmp7.i{{.*}}, %land.lhs.true{{.*}} ], [ %tmp7.i{{.*}}, %land.lhs.true{{.*}} ]
-; CHECK: exit.3:
-define i32 @test3() nounwind uwtable ssp align 2 {
-entry:
-  %cond1 = call zeroext i1 @check()
-  br i1 %cond1, label %return, label %if.end
-
-if.end:                                           ; preds = %entry
-  br label %do.body
-
-do.body:                                          ; preds = %do.cond, %if.end
-  %cond2 = call zeroext i1 @check()
-  br i1 %cond2, label %exit, label %do.cond
-
-exit:                  ; preds = %do.body
-  %tmp7.i = load i32, i32* undef, align 8
-  br i1 undef, label %do.cond, label %land.lhs.true
-
-land.lhs.true:                                    ; preds = %exit
-  br i1 undef, label %return, label %do.cond
-
-do.cond:                                          ; preds = %land.lhs.true, %exit, %do.body
-  %cond3 = call zeroext i1 @check()
-  br i1 %cond3, label %do.end, label %do.body
-
-do.end:                                           ; preds = %do.cond
-  br label %return
-
-return:                                           ; preds = %do.end, %land.lhs.true, %entry
-  %retval.0 = phi i32 [ 0, %do.end ], [ 0, %entry ], [ %tmp7.i, %land.lhs.true ]
-  ret i32 %retval.0
-}