; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6 ; RUN: opt -passes=gvn -S < %s | FileCheck %s target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n8:16:32-S64" target triple = "thumbv7--linux-gnueabi" %struct.a = type { i16, i16, [1 x %union.a] } %union.a = type { i32 } @length = external global [0 x i32], align 4 ; Function Attrs: nounwind define fastcc void @foo(ptr nocapture readonly %x) { ; CHECK-LABEL: define fastcc void @foo( ; CHECK-SAME: ptr readonly captures(none) [[X:%.*]]) { ; CHECK-NEXT: [[ENTRY:.*]]: ; CHECK-NEXT: br label %[[BB0:.*]] ; CHECK: [[BB0]]: ; CHECK-NEXT: [[X_TR:%.*]] = phi ptr [ [[X]], %[[ENTRY]] ], [ null, %[[LAND_LHS_TRUE:.*]] ] ; CHECK-NEXT: [[TMP0:%.*]] = load i16, ptr [[X_TR]], align 4 ; CHECK-NEXT: [[CONV:%.*]] = zext i16 [[TMP0]] to i32 ; CHECK-NEXT: switch i32 [[CONV]], label %[[IF_END_50:.*]] [ ; CHECK-NEXT: i32 43, label %[[CLEANUP:.*]] ; CHECK-NEXT: i32 52, label %[[IF_THEN_5:.*]] ; CHECK-NEXT: ] ; CHECK: [[IF_THEN_5]]: ; CHECK-NEXT: br i1 undef, label %[[LAND_LHS_TRUE]], label %[[IF_THEN_26:.*]] ; CHECK: [[LAND_LHS_TRUE]]: ; CHECK-NEXT: br i1 undef, label %[[CLEANUP]], label %[[BB0]] ; CHECK: [[IF_THEN_26]]: ; CHECK-NEXT: br i1 undef, label %[[COND_END:.*]], label %[[COND_FALSE:.*]] ; CHECK: [[COND_FALSE]]: ; CHECK-NEXT: [[MODE:%.*]] = getelementptr inbounds [[STRUCT_A:%.*]], ptr [[X_TR]], i32 0, i32 1 ; CHECK-NEXT: [[BF_LOAD:%.*]] = load i16, ptr [[MODE]], align 2 ; CHECK-NEXT: [[BF_SHL:%.*]] = shl i16 [[BF_LOAD]], 8 ; CHECK-NEXT: br label %[[COND_END]] ; CHECK: [[COND_END]]: ; CHECK-NEXT: br i1 undef, label %[[IF_THEN_44:.*]], label %[[CLEANUP]] ; CHECK: [[IF_THEN_44]]: ; CHECK-NEXT: unreachable ; CHECK: [[IF_END_50]]: ; CHECK-NEXT: [[ARRAYIDX52:%.*]] = getelementptr inbounds [0 x i32], ptr @length, i32 0, i32 [[CONV]] ; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX52]], align 4 ; CHECK-NEXT: br i1 undef, label %[[FOR_BODY_57:.*]], label %[[CLEANUP]] ; CHECK: [[FOR_BODY_57]]: ; CHECK-NEXT: [[I_2157:%.*]] = add nsw i32 [[TMP1]], -1 ; CHECK-NEXT: unreachable ; CHECK: [[CLEANUP]]: ; CHECK-NEXT: ret void ; entry: br label %bb0 bb0: ; preds = %land.lhs.true, %entry %x.tr = phi ptr [ %x, %entry ], [ null, %land.lhs.true ] %0 = load i16, ptr %x.tr, align 4 %conv = zext i16 %0 to i32 switch i32 %conv, label %if.end.50 [ i32 43, label %cleanup i32 52, label %if.then.5 ] if.then.5: ; preds = %bb0 br i1 undef, label %land.lhs.true, label %if.then.26 land.lhs.true: ; preds = %if.then.5 br i1 undef, label %cleanup, label %bb0 if.then.26: ; preds = %if.then.5 %x.tr.lcssa163 = phi ptr [ %x.tr, %if.then.5 ] br i1 undef, label %cond.end, label %cond.false cond.false: ; preds = %if.then.26 %mode = getelementptr inbounds %struct.a, ptr %x.tr.lcssa163, i32 0, i32 1 %bf.load = load i16, ptr %mode, align 2 %bf.shl = shl i16 %bf.load, 8 br label %cond.end cond.end: ; preds = %cond.false, %if.then.26 br i1 undef, label %if.then.44, label %cleanup if.then.44: ; preds = %cond.end unreachable if.end.50: ; preds = %bb0 %conv.lcssa = phi i32 [ %conv, %bb0 ] %arrayidx52 = getelementptr inbounds [0 x i32], ptr @length, i32 0, i32 %conv.lcssa %1 = load i32, ptr %arrayidx52, align 4 br i1 undef, label %for.body.57, label %cleanup for.body.57: ; preds = %if.end.50 %i.2157 = add nsw i32 %1, -1 unreachable cleanup: ; preds = %if.end.50, %cond.end, %land.lhs.true, %bb0 ret void } @yy_c_buf_p = external unnamed_addr global ptr, align 4 @dfg_text = external global ptr, align 4 define void @dfg_lex() { ; CHECK-LABEL: define void @dfg_lex() { ; CHECK-NEXT: [[ENTRY:.*:]] ; CHECK-NEXT: br label %[[WHILE_BODYTHREAD_PRE_SPLIT:.*]] ; CHECK: [[WHILE_BODYTHREAD_PRE_SPLIT]]: ; CHECK-NEXT: br i1 undef, label %[[WHILE_BODYTHREAD_PRE_SPLIT_IF_THEN_14_CRIT_EDGE:.*]], label %[[IF_END_15:.*]] ; CHECK: [[WHILE_BODYTHREAD_PRE_SPLIT_IF_THEN_14_CRIT_EDGE]]: ; CHECK-NEXT: [[V1_PRE:%.*]] = load i32, ptr @dfg_text, align 4 ; CHECK-NEXT: br label %[[IF_THEN_14:.*]] ; CHECK: [[IF_THEN_14]]: ; CHECK-NEXT: [[V1:%.*]] = phi i32 [ [[V1_PRE]], %[[WHILE_BODYTHREAD_PRE_SPLIT_IF_THEN_14_CRIT_EDGE]] ], [ [[SUB_PTR_RHS_CAST25:%.*]], %[[WHILE_END:.*]] ] ; CHECK-NEXT: br label %[[IF_END_15]] ; CHECK: [[IF_END_15]]: ; CHECK-NEXT: [[V2:%.*]] = load ptr, ptr @yy_c_buf_p, align 4 ; CHECK-NEXT: br label %[[WHILE_COND_16:.*]] ; CHECK: [[WHILE_COND_16]]: ; CHECK-NEXT: br i1 undef, label %[[WHILE_COND_16]], label %[[WHILE_END]] ; CHECK: [[WHILE_END]]: ; CHECK-NEXT: [[ADD_PTR:%.*]] = getelementptr inbounds i8, ptr [[V2]], i32 undef ; CHECK-NEXT: store ptr [[ADD_PTR]], ptr @dfg_text, align 4 ; CHECK-NEXT: [[SUB_PTR_RHS_CAST25]] = ptrtoint ptr [[ADD_PTR]] to i32 ; CHECK-NEXT: [[SUB_PTR_SUB26:%.*]] = sub i32 0, [[SUB_PTR_RHS_CAST25]] ; CHECK-NEXT: switch i32 undef, label %[[SW_DEFAULT:.*]] [ ; CHECK-NEXT: i32 65, label %[[WHILE_BODYTHREAD_PRE_SPLIT]] ; CHECK-NEXT: i32 3, label %[[RETURN:.*]] ; CHECK-NEXT: i32 57, label %[[WHILE_BODYTHREAD_PRE_SPLIT]] ; CHECK-NEXT: i32 60, label %[[IF_THEN_14]] ; CHECK-NEXT: ] ; CHECK: [[SW_DEFAULT]]: ; CHECK-NEXT: unreachable ; CHECK: [[RETURN]]: ; CHECK-NEXT: ret void ; entry: br label %while.bodythread-pre-split while.bodythread-pre-split: ; preds = %while.end, %while.end, %entry br i1 undef, label %if.then.14, label %if.end.15 if.then.14: ; preds = %while.end, %while.bodythread-pre-split %v1 = load i32, ptr @dfg_text, align 4 %sub.ptr.sub = sub i32 undef, %v1 br label %if.end.15 if.end.15: ; preds = %if.then.14, %while.bodythread-pre-split %v2 = load ptr, ptr @yy_c_buf_p, align 4 br label %while.cond.16 while.cond.16: ; preds = %while.cond.16, %if.end.15 br i1 undef, label %while.cond.16, label %while.end while.end: ; preds = %while.cond.16 %add.ptr = getelementptr inbounds i8, ptr %v2, i32 undef store ptr %add.ptr, ptr @dfg_text, align 4 %sub.ptr.rhs.cast25 = ptrtoint ptr %add.ptr to i32 %sub.ptr.sub26 = sub i32 0, %sub.ptr.rhs.cast25 switch i32 undef, label %sw.default [ i32 65, label %while.bodythread-pre-split i32 3, label %return i32 57, label %while.bodythread-pre-split i32 60, label %if.then.14 ] sw.default: ; preds = %while.end unreachable return: ; preds = %while.end ret void }