--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
+; RUN: opt -S -passes=early-cse %s | FileCheck %s
+
+; Check for regression when phi support for computeKnownFPClass was
+; first committed.
+define void @compute_known_fpclass_phi_assert(i1 %cmp46, i1 %tobool51, ptr %a01) {
+; CHECK-LABEL: define void @compute_known_fpclass_phi_assert
+; CHECK-SAME: (i1 [[CMP46:%.*]], i1 [[TOBOOL51:%.*]], ptr [[A01:%.*]]) {
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[FOR_COND45:%.*]]
+; CHECK: for.cond45:
+; CHECK-NEXT: [[TMP0:%.*]] = phi double [ [[TMP1:%.*]], [[FOR_INC80:%.*]] ], [ 0.000000e+00, [[ENTRY:%.*]] ]
+; CHECK-NEXT: br i1 [[CMP46]], label [[FOR_BODY48:%.*]], label [[FOR_END82:%.*]]
+; CHECK: for.body48:
+; CHECK-NEXT: br i1 [[TOBOOL51]], label [[FOR_INC80]], label [[IF_THEN52:%.*]]
+; CHECK: if.then52:
+; CHECK-NEXT: store double 0.000000e+00, ptr [[A01]], align 8
+; CHECK-NEXT: br label [[FOR_INC80]]
+; CHECK: for.inc80:
+; CHECK-NEXT: [[TMP1]] = phi double [ 0.000000e+00, [[IF_THEN52]] ], [ [[TMP0]], [[FOR_BODY48]] ]
+; CHECK-NEXT: br label [[FOR_COND45]]
+; CHECK: for.end82:
+; CHECK-NEXT: [[MUL84:%.*]] = fmul double [[TMP0]], 0.000000e+00
+; CHECK-NEXT: ret void
+;
+entry:
+ br label %for.cond45
+
+for.cond45: ; preds = %for.inc80, %entry
+ %0 = phi double [ %1, %for.inc80 ], [ 0.000000e+00, %entry ]
+ br i1 %cmp46, label %for.body48, label %for.end82
+
+for.body48: ; preds = %for.cond45
+ br i1 %tobool51, label %for.inc80, label %if.then52
+
+if.then52: ; preds = %for.body48
+ store double 0.000000e+00, ptr %a01, align 8
+ br label %for.inc80
+
+for.inc80: ; preds = %if.then52, %for.body48
+ %1 = phi double [ 0.000000e+00, %if.then52 ], [ %0, %for.body48 ]
+ br label %for.cond45
+
+for.end82: ; preds = %for.cond45
+ %mul84 = fmul double %0, 0.000000e+00
+ %neg = fneg double %mul84
+ ret void
+}