63 lines · plain
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=lcssa -S -verify-loop-info | FileCheck %s3 4; LCSSA doesn't need to transform uses in blocks not reachable5; from the entry block.6 7; PR65468define void @test_pr6546(ptr %src, i1 %c) {9; CHECK-LABEL: @test_pr6546(10; CHECK-NEXT: bb:11; CHECK-NEXT: br label [[BB44:%.*]]12; CHECK: bb44:13; CHECK-NEXT: br i1 [[C:%.*]], label [[BB7:%.*]], label [[BB45:%.*]]14; CHECK: bb7:15; CHECK-NEXT: [[TMP:%.*]] = getelementptr ptr, ptr [[SRC:%.*]], i64 316; CHECK-NEXT: br label [[BB15:%.*]]17; CHECK: bb15:18; CHECK-NEXT: br label [[BB44]]19; CHECK: bb32:20; CHECK-NEXT: [[TMP33:%.*]] = load ptr, ptr [[TMP]], align 821; CHECK-NEXT: br label [[BB45]]22; CHECK: bb45:23; CHECK-NEXT: unreachable24;25bb:26 br label %bb4427 28bb44:29 br i1 %c, label %bb7, label %bb4530 31bb7:32 %tmp = getelementptr ptr, ptr %src, i64 333 br label %bb1534 35bb15:36 br label %bb4437 38bb32:39 %tmp33 = load ptr, ptr %tmp, align 840 br label %bb4541 42bb45:43 unreachable44}45 46define void @multiple_unreachable_uses(ptr %A, ptr %B) {47entry:48 br label %loop49 50loop:51 %gep.A = getelementptr inbounds float, ptr %A, i64 1052 %gep.B = getelementptr inbounds ptr, ptr %B, i64 2053 br i1 false, label %exit, label %loop54 55dead: ; No predecessors!56 %l1 = load float, ptr %gep.A, align 457 %l2 = load ptr, ptr %gep.B, align 858 br label %exit59 60exit:61 ret void62}63