return !Result.empty();
}
- // Handle Cast instructions. Only see through Cast when the source operand is
- // PHI, Cmp, or Freeze to save the compilation time.
+ // Handle Cast instructions.
if (CastInst *CI = dyn_cast<CastInst>(I)) {
Value *Source = CI->getOperand(0);
- if (!isa<PHINode>(Source) && !isa<CmpInst>(Source) &&
- !isa<FreezeInst>(Source))
- return false;
ComputeValueKnownInPredecessorsImpl(Source, BB, Result, Preference,
RecursionSet, CxtI);
if (Result.empty())
; CHECK-NEXT: br i1 [[COND0:%.*]], label [[T1:%.*]], label [[F1:%.*]]
; CHECK: T1:
; CHECK-NEXT: [[V1:%.*]] = call i32 @f1()
-; CHECK-NEXT: br label [[MERGE:%.*]]
+; CHECK-NEXT: br label [[F2:%.*]]
; CHECK: F1:
; CHECK-NEXT: [[V2:%.*]] = call i32 @f2()
-; CHECK-NEXT: br label [[MERGE]]
-; CHECK: Merge:
+; CHECK-NEXT: br label [[F2]]
+; CHECK: F2:
; CHECK-NEXT: [[A:%.*]] = phi i32 [ 10, [[T1]] ], [ 0, [[F1]] ]
; CHECK-NEXT: [[B:%.*]] = phi i32 [ [[V1]], [[T1]] ], [ [[V2]], [[F1]] ]
; CHECK-NEXT: [[AND:%.*]] = and i32 [[A]], 1
-; CHECK-NEXT: [[COND:%.*]] = trunc i32 [[AND]] to i1
-; CHECK-NEXT: br i1 [[COND]], label [[T2:%.*]], label [[F2:%.*]]
-; CHECK: T2:
-; CHECK-NEXT: call void @f3()
-; CHECK-NEXT: ret i32 [[B]]
-; CHECK: F2:
; CHECK-NEXT: ret i32 [[B]]
;
br i1 %cond0, label %T1, label %F1
; CHECK-NEXT: br i1 [[COND0:%.*]], label [[T1:%.*]], label [[F1:%.*]]
; CHECK: T1:
; CHECK-NEXT: [[V1:%.*]] = call i32 @f1()
-; CHECK-NEXT: br label [[MERGE:%.*]]
+; CHECK-NEXT: br label [[F2:%.*]]
; CHECK: F1:
; CHECK-NEXT: [[V2:%.*]] = call i32 @f2()
-; CHECK-NEXT: br label [[MERGE]]
-; CHECK: Merge:
+; CHECK-NEXT: br label [[F2]]
+; CHECK: F2:
; CHECK-NEXT: [[A:%.*]] = phi i1 [ true, [[T1]] ], [ false, [[F1]] ]
; CHECK-NEXT: [[B:%.*]] = phi i32 [ [[V1]], [[T1]] ], [ [[V2]], [[F1]] ]
; CHECK-NEXT: [[A2:%.*]] = xor i1 [[A]], true
; CHECK-NEXT: [[SEL:%.*]] = select i1 [[A2]], i32 10, i32 0
-; CHECK-NEXT: [[COND:%.*]] = trunc i32 [[SEL]] to i1
-; CHECK-NEXT: br i1 [[COND]], label [[T2:%.*]], label [[F2:%.*]]
-; CHECK: T2:
-; CHECK-NEXT: call void @f3()
-; CHECK-NEXT: ret i32 [[B]]
-; CHECK: F2:
; CHECK-NEXT: ret i32 [[B]]
;
br i1 %cond0, label %T1, label %F1