| ; RUN: opt -S -passes=loop-rotate < %s -verify-loop-info -verify-dom-info -verify-memoryssa | FileCheck %s |
| |
| target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" |
| target triple = "x86_64-apple-macosx10.8.0" |
| |
| ; PR7447 |
| define i32 @test1(ptr nocapture %a) nounwind readonly { |
| entry: |
| br label %for.cond |
| |
| for.cond: ; preds = %for.cond1, %entry |
| %sum.0 = phi i32 [ 0, %entry ], [ %sum.1, %for.cond1 ] |
| %i.0 = phi i1 [ true, %entry ], [ false, %for.cond1 ] |
| br i1 %i.0, label %for.cond1, label %return |
| |
| for.cond1: ; preds = %for.cond, %land.rhs |
| %sum.1 = phi i32 [ %add, %land.rhs ], [ %sum.0, %for.cond ] |
| %i.1 = phi i32 [ %inc, %land.rhs ], [ 0, %for.cond ] |
| %cmp2 = icmp ult i32 %i.1, 100 |
| br i1 %cmp2, label %land.rhs, label %for.cond |
| |
| land.rhs: ; preds = %for.cond1 |
| %conv = zext i32 %i.1 to i64 |
| %arrayidx = getelementptr inbounds [100 x i32], ptr %a, i64 0, i64 %conv |
| %0 = load i32, ptr %arrayidx, align 4 |
| %add = add i32 %0, %sum.1 |
| %cmp4 = icmp ugt i32 %add, 1000 |
| %inc = add i32 %i.1, 1 |
| br i1 %cmp4, label %return, label %for.cond1 |
| |
| return: ; preds = %for.cond, %land.rhs |
| %retval.0 = phi i32 [ 1000, %land.rhs ], [ %sum.0, %for.cond ] |
| ret i32 %retval.0 |
| |
| ; CHECK-LABEL: @test1( |
| ; CHECK: for.cond1.preheader: |
| ; CHECK: %sum.04 = phi i32 [ 0, %entry ], [ %sum.1.lcssa, %for.cond.loopexit ] |
| ; CHECK: br label %for.cond1 |
| |
| ; CHECK: for.cond1: |
| ; CHECK: %sum.1 = phi i32 [ %add, %land.rhs ], [ %sum.04, %for.cond1.preheader ] |
| ; CHECK: %i.1 = phi i32 [ %inc, %land.rhs ], [ 0, %for.cond1.preheader ] |
| ; CHECK: %cmp2 = icmp ult i32 %i.1, 100 |
| ; CHECK: br i1 %cmp2, label %land.rhs, label %for.cond.loopexit |
| } |
| |
| define void @test2(i32 %x) nounwind { |
| entry: |
| br label %for.cond |
| |
| for.cond: ; preds = %if.end, %entry |
| %i.0 = phi i32 [ 0, %entry ], [ %inc, %if.end ] |
| %cmp = icmp eq i32 %i.0, %x |
| br i1 %cmp, label %return.loopexit, label %for.body |
| |
| for.body: ; preds = %for.cond |
| %call = tail call i32 @foo(i32 %i.0) nounwind |
| %tobool = icmp eq i32 %call, 0 |
| br i1 %tobool, label %if.end, label %a |
| |
| if.end: ; preds = %for.body |
| %call1 = tail call i32 @foo(i32 42) nounwind |
| %inc = add i32 %i.0, 1 |
| br label %for.cond |
| |
| a: ; preds = %for.body |
| %call2 = tail call i32 @bar(i32 1) nounwind |
| br label %return |
| |
| return.loopexit: ; preds = %for.cond |
| br label %return |
| |
| return: ; preds = %return.loopexit, %a |
| ret void |
| |
| ; CHECK-LABEL: @test2( |
| ; CHECK: if.end: |
| ; CHECK: %inc = add i32 %i.02, 1 |
| ; CHECK: %cmp = icmp eq i32 %inc, %x |
| ; CHECK: br i1 %cmp, label %for.cond.return.loopexit_crit_edge, label %for.body |
| } |
| |
| declare i32 @foo(i32) |
| |
| declare i32 @bar(i32) |
| |
| @_ZTIi = external constant ptr |
| |
| ; Verify dominators. |
| define void @test3(i32 %x) personality ptr @__gxx_personality_v0 { |
| entry: |
| %cmp2 = icmp eq i32 0, %x |
| br i1 %cmp2, label %try.cont.loopexit, label %for.body.lr.ph |
| |
| for.body.lr.ph: ; preds = %entry |
| br label %for.body |
| |
| for.body: ; preds = %for.body.lr.ph, %for.inc |
| %i.03 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ] |
| invoke void @_Z3fooi(i32 %i.03) |
| to label %for.inc unwind label %lpad |
| |
| for.inc: ; preds = %for.body |
| %inc = add i32 %i.03, 1 |
| %cmp = icmp eq i32 %inc, %x |
| br i1 %cmp, label %for.cond.try.cont.loopexit_crit_edge, label %for.body |
| |
| lpad: ; preds = %for.body |
| %0 = landingpad { ptr, i32 } |
| catch ptr @_ZTIi |
| %1 = extractvalue { ptr, i32 } %0, 0 |
| %2 = extractvalue { ptr, i32 } %0, 1 |
| %3 = tail call i32 @llvm.eh.typeid.for(ptr @_ZTIi) nounwind |
| %matches = icmp eq i32 %2, %3 |
| br i1 %matches, label %catch, label %eh.resume |
| |
| catch: ; preds = %lpad |
| %4 = tail call ptr @__cxa_begin_catch(ptr %1) nounwind |
| br i1 true, label %invoke.cont2.loopexit, label %for.body.i.lr.ph |
| |
| for.body.i.lr.ph: ; preds = %catch |
| br label %for.body.i |
| |
| for.body.i: ; preds = %for.body.i.lr.ph, %for.inc.i |
| %i.0.i1 = phi i32 [ 0, %for.body.i.lr.ph ], [ %inc.i, %for.inc.i ] |
| invoke void @_Z3fooi(i32 %i.0.i1) |
| to label %for.inc.i unwind label %lpad.i |
| |
| for.inc.i: ; preds = %for.body.i |
| %inc.i = add i32 %i.0.i1, 1 |
| %cmp.i = icmp eq i32 %inc.i, 0 |
| br i1 %cmp.i, label %for.cond.i.invoke.cont2.loopexit_crit_edge, label %for.body.i |
| |
| lpad.i: ; preds = %for.body.i |
| %5 = landingpad { ptr, i32 } |
| catch ptr @_ZTIi |
| %6 = extractvalue { ptr, i32 } %5, 0 |
| %7 = extractvalue { ptr, i32 } %5, 1 |
| %matches.i = icmp eq i32 %7, %3 |
| br i1 %matches.i, label %catch.i, label %lpad1.body |
| |
| catch.i: ; preds = %lpad.i |
| %8 = tail call ptr @__cxa_begin_catch(ptr %6) nounwind |
| invoke void @test3(i32 0) |
| to label %invoke.cont2.i unwind label %lpad1.i |
| |
| invoke.cont2.i: ; preds = %catch.i |
| tail call void @__cxa_end_catch() nounwind |
| br label %invoke.cont2 |
| |
| lpad1.i: ; preds = %catch.i |
| %9 = landingpad { ptr, i32 } |
| cleanup |
| %10 = extractvalue { ptr, i32 } %9, 0 |
| %11 = extractvalue { ptr, i32 } %9, 1 |
| tail call void @__cxa_end_catch() nounwind |
| br label %lpad1.body |
| |
| for.cond.i.invoke.cont2.loopexit_crit_edge: ; preds = %for.inc.i |
| br label %invoke.cont2.loopexit |
| |
| invoke.cont2.loopexit: ; preds = %for.cond.i.invoke.cont2.loopexit_crit_edge, %catch |
| br label %invoke.cont2 |
| |
| invoke.cont2: ; preds = %invoke.cont2.loopexit, %invoke.cont2.i |
| tail call void @__cxa_end_catch() nounwind |
| br label %try.cont |
| |
| for.cond.try.cont.loopexit_crit_edge: ; preds = %for.inc |
| br label %try.cont.loopexit |
| |
| try.cont.loopexit: ; preds = %for.cond.try.cont.loopexit_crit_edge, %entry |
| br label %try.cont |
| |
| try.cont: ; preds = %try.cont.loopexit, %invoke.cont2 |
| ret void |
| |
| lpad1.body: ; preds = %lpad1.i, %lpad.i |
| %exn.slot.0.i = phi ptr [ %10, %lpad1.i ], [ %6, %lpad.i ] |
| %ehselector.slot.0.i = phi i32 [ %11, %lpad1.i ], [ %7, %lpad.i ] |
| tail call void @__cxa_end_catch() nounwind |
| br label %eh.resume |
| |
| eh.resume: ; preds = %lpad1.body, %lpad |
| %exn.slot.0 = phi ptr [ %exn.slot.0.i, %lpad1.body ], [ %1, %lpad ] |
| %ehselector.slot.0 = phi i32 [ %ehselector.slot.0.i, %lpad1.body ], [ %2, %lpad ] |
| %lpad.val = insertvalue { ptr, i32 } undef, ptr %exn.slot.0, 0 |
| %lpad.val5 = insertvalue { ptr, i32 } %lpad.val, i32 %ehselector.slot.0, 1 |
| resume { ptr, i32 } %lpad.val5 |
| } |
| |
| declare void @_Z3fooi(i32) |
| |
| declare i32 @__gxx_personality_v0(...) |
| |
| declare i32 @llvm.eh.typeid.for(ptr) nounwind readnone |
| |
| declare ptr @__cxa_begin_catch(ptr) |
| |
| declare void @__cxa_end_catch() |
| |
| define void @test4() nounwind uwtable { |
| entry: |
| br label %"7" |
| |
| "3": ; preds = %"7" |
| br i1 undef, label %"31", label %"4" |
| |
| "4": ; preds = %"3" |
| %. = select i1 undef, float 0x3F50624DE0000000, float undef |
| %0 = add i32 %1, 1 |
| br label %"7" |
| |
| "7": ; preds = %"4", %entry |
| %1 = phi i32 [ %0, %"4" ], [ 0, %entry ] |
| %2 = icmp slt i32 %1, 100 |
| br i1 %2, label %"3", label %"8" |
| |
| "8": ; preds = %"7" |
| br i1 undef, label %"9", label %"31" |
| |
| "9": ; preds = %"8" |
| br label %"33" |
| |
| "27": ; preds = %"31" |
| unreachable |
| |
| "31": ; preds = %"8", %"3" |
| br i1 undef, label %"27", label %"32" |
| |
| "32": ; preds = %"31" |
| br label %"33" |
| |
| "33": ; preds = %"32", %"9" |
| ret void |
| } |
