-; NOTE: Assertions have been autogenerated by update_test_checks.py
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instsimplify -S | FileCheck %s
; PR12189
define i1 @test1(i32 %x) {
; CHECK-LABEL: @test1(
-; CHECK: ret i1 %e
+; CHECK-NEXT: br i1 true, label [[A:%.*]], label [[B:%.*]]
+; CHECK: a:
+; CHECK-NEXT: [[AA:%.*]] = or i32 [[X:%.*]], 10
+; CHECK-NEXT: br label [[C:%.*]]
+; CHECK: b:
+; CHECK-NEXT: [[BB:%.*]] = or i32 [[X]], 10
+; CHECK-NEXT: br label [[C]]
+; CHECK: c:
+; CHECK-NEXT: [[CC:%.*]] = phi i32 [ [[BB]], [[B]] ], [ [[AA]], [[A]] ]
+; CHECK-NEXT: [[D:%.*]] = urem i32 [[CC]], 2
+; CHECK-NEXT: [[E:%.*]] = icmp eq i32 [[D]], 0
+; CHECK-NEXT: ret i1 [[E]]
;
br i1 true, label %a, label %b
%e = icmp eq i32 %d, 0
ret i1 %e
}
+
+; D63489 - https://reviews.llvm.org/D63489
+; If this single-value phi form needs to be preserved to enable
+; further analysis, then -instsimplify should not be running?
+
+define i32 @lcssa-phi(i32 %x) {
+; CHECK-LABEL: @lcssa-phi(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[END:%.*]]
+; CHECK: end:
+; CHECK-NEXT: ret i32 [[X:%.*]]
+;
+entry:
+ br label %end
+
+end:
+ %counter.lcssa = phi i32 [ %x, %entry ]
+ ret i32 %counter.lcssa
+}