72 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 52; RUN: opt < %s -S | FileCheck %s3 4define i32 @phi_after_label(i1 %cc) {5; CHECK-LABEL: define i32 @phi_after_label(6; CHECK-SAME: i1 [[CC:%.*]]) {7; CHECK-NEXT: [[ENTRY:.*]]:8; CHECK-NEXT: br i1 [[CC]], label %[[THEN:.*]], label %[[END:.*]]9; CHECK: [[THEN]]:10; CHECK-NEXT: br label %[[END]]11; CHECK: [[END]]:12; CHECK-NEXT: [[R:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ 1, %[[THEN]] ]13; CHECK-NEXT: ret i32 [[R]]14;15entry:16 br i1 %cc, label %then, label %end17 18then:19 br label %end20 21end:22 %r = phi i32 [ 0, %entry ], [ 1, %then ]23 ret i32 %r24}25 26define void @phi_before_label(i32 %bound) {27; CHECK-LABEL: define void @phi_before_label(28; CHECK-SAME: i32 [[BOUND:%.*]]) {29; CHECK-NEXT: [[ENTRY:.*]]:30; CHECK-NEXT: br label %[[LOOP:.*]]31; CHECK: [[LOOP]]:32; CHECK-NEXT: [[CTR:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[CTR_NEXT:%.*]], %[[LOOP]] ]33; CHECK-NEXT: [[CTR_NEXT]] = add i32 [[CTR]], 134; CHECK-NEXT: [[CC:%.*]] = icmp ult i32 [[CTR_NEXT]], [[BOUND]]35; CHECK-NEXT: br i1 [[CC]], label %[[LOOP]], label %[[END:.*]]36; CHECK: [[END]]:37; CHECK-NEXT: ret void38;39entry:40 br label %loop41 42loop:43 %ctr = phi i32 [ 0, %entry ], [ %ctr.next, %loop ]44 %ctr.next = add i32 %ctr, 145 %cc = icmp ult i32 %ctr.next, %bound46 br i1 %cc, label %loop, label %end47 48end:49 ret void50}51 52define i32 @phi_after_label_unnamed(i1 %cc) {53; CHECK-LABEL: define i32 @phi_after_label_unnamed(54; CHECK-SAME: i1 [[CC:%.*]]) {55; CHECK-NEXT: br i1 [[CC]], label %[[BB1:.*]], label %[[BB2:.*]]56; CHECK: [[BB1]]:57; CHECK-NEXT: br label %[[BB2]]58; CHECK: [[BB2]]:59; CHECK-NEXT: [[R:%.*]] = phi i32 [ 0, [[TMP0:%.*]] ], [ 1, %[[BB1]] ]60; CHECK-NEXT: ret i32 [[R]]61;620:63 br i1 %cc, label %1, label %264 651:66 br label %267 682:69 %r = phi i32 [ 0, %0 ], [ 1, %1 ]70 ret i32 %r71}72