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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 22; RUN: opt < %s -passes=instcombine -S | FileCheck %s3 4define i1 @SwitchTest(i32 %x, i32 %y) {5; CHECK-LABEL: define i1 @SwitchTest6; CHECK-SAME: (i32 [[X:%.*]], i32 [[Y:%.*]]) {7; CHECK-NEXT: entry:8; CHECK-NEXT: switch i32 [[X]], label [[BB1:%.*]] [9; CHECK-NEXT: i32 0, label [[BB2:%.*]]10; CHECK-NEXT: i32 1, label [[BB3:%.*]]11; CHECK-NEXT: ]12; CHECK: bb1:13; CHECK-NEXT: [[TMP0:%.*]] = icmp ugt i32 [[Y]], 114; CHECK-NEXT: br label [[BB2]]15; CHECK: bb2:16; CHECK-NEXT: [[PHI1:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[TMP0]], [[BB1]] ]17; CHECK-NEXT: br label [[BB3]]18; CHECK: bb3:19; CHECK-NEXT: [[PHI2:%.*]] = phi i1 [ [[PHI1]], [[BB2]] ], [ false, [[ENTRY]] ]20; CHECK-NEXT: ret i1 [[PHI2]]21;22entry:23 switch i32 %x, label %bb1 [24 i32 0, label %bb225 i32 1, label %bb326 ]27 28bb1:29 br label %bb230 31bb2:32 %phi1 = phi i32 [ 1, %entry ], [ %y, %bb1 ]33 br label %bb334 35bb3:36 %phi2 = phi i32 [ %phi1, %bb2 ], [ 0, %entry ]37 %cmp = icmp ugt i32 %phi2, 138 ret i1 %cmp39}40 41; Test case derived from:42; llvm-test-suite/MultiSource/Benchmarks/MiBench/consumer-typeset/z10.c43define i1 @BranchTest(i1 %c, i1 %c1, i1 %c2, i1 %c3, i1 %c4) {44; CHECK-LABEL: define i1 @BranchTest45; CHECK-SAME: (i1 [[C:%.*]], i1 [[C1:%.*]], i1 [[C2:%.*]], i1 [[C3:%.*]], i1 [[C4:%.*]]) {46; CHECK-NEXT: entry:47; CHECK-NEXT: br i1 [[C]], label [[SW_EPILOG:%.*]], label [[COND_FALSE:%.*]]48; CHECK: cond.false:49; CHECK-NEXT: br i1 [[C1]], label [[SW_EPILOG]], label [[COND_FALSE2:%.*]]50; CHECK: cond.false2:51; CHECK-NEXT: br i1 [[C2]], label [[SW_EPILOG]], label [[COND_FALSE3:%.*]]52; CHECK: cond.false3:53; CHECK-NEXT: br i1 [[C3]], label [[SW_BB:%.*]], label [[COND_END:%.*]]54; CHECK: cond.end:55; CHECK-NEXT: br label [[SW_BB]]56; CHECK: sw.bb:57; CHECK-NEXT: br label [[SW_EPILOG]]58; CHECK: sw.epilog:59; CHECK-NEXT: ret i1 [[C]]60;61entry:62 br i1 %c, label %sw.epilog, label %cond.false63 64cond.false:65 br i1 %c1, label %sw.epilog, label %cond.false266 67cond.false2:68 br i1 %c2, label %sw.epilog, label %cond.false369 70cond.false3:71 br i1 %c3, label %sw.bb, label %cond.end72 73cond.end:74 %cond = select i1 %c4, i32 127, i32 12675 br label %sw.bb76 77sw.bb:78 %cond2 = phi i32 [ %cond, %cond.end ], [ 128, %cond.false3 ]79 br label %sw.epilog80 81sw.epilog:82 %cond3 = phi i32 [ %cond2, %sw.bb ], [ 134, %cond.false2 ], [ 2, %cond.false ], [ 1, %entry ]83 %cmp = icmp ult i32 %cond3, 284 ret i1 %cmp85}86