mirror of
https://github.com/RPCS3/llvm-mirror.git
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9e422987c3
We update until we hit a fixpoint. This is probably slow but also slightly simplifies the code. It should also fix the occasional invalid domtrees observed when building with expensive checking. I couldn't find a case where this had a measurable slowdown, but if someone finds a pathological case where it does we may have to find a cleverer way of updating dominators here. Thanks to Duncan for the test case. llvm-svn: 163091
237 lines
8.5 KiB
LLVM
237 lines
8.5 KiB
LLVM
; RUN: opt -S -loop-rotate < %s -verify-loop-info -verify-dom-info | FileCheck %s
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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"
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target triple = "x86_64-apple-macosx10.8.0"
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; PR7447
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define i32 @test1([100 x i32]* nocapture %a) nounwind readonly {
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entry:
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br label %for.cond
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for.cond: ; preds = %for.cond1, %entry
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%sum.0 = phi i32 [ 0, %entry ], [ %sum.1, %for.cond1 ]
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%i.0 = phi i1 [ true, %entry ], [ false, %for.cond1 ]
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br i1 %i.0, label %for.cond1, label %return
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for.cond1: ; preds = %for.cond, %land.rhs
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%sum.1 = phi i32 [ %add, %land.rhs ], [ %sum.0, %for.cond ]
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%i.1 = phi i32 [ %inc, %land.rhs ], [ 0, %for.cond ]
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%cmp2 = icmp ult i32 %i.1, 100
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br i1 %cmp2, label %land.rhs, label %for.cond
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land.rhs: ; preds = %for.cond1
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%conv = zext i32 %i.1 to i64
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%arrayidx = getelementptr inbounds [100 x i32]* %a, i64 0, i64 %conv
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%0 = load i32* %arrayidx, align 4
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%add = add i32 %0, %sum.1
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%cmp4 = icmp ugt i32 %add, 1000
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%inc = add i32 %i.1, 1
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br i1 %cmp4, label %return, label %for.cond1
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return: ; preds = %for.cond, %land.rhs
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%retval.0 = phi i32 [ 1000, %land.rhs ], [ %sum.0, %for.cond ]
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ret i32 %retval.0
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; CHECK: @test1
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; CHECK: for.cond1.preheader:
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; CHECK: %sum.04 = phi i32 [ 0, %entry ], [ %sum.1.lcssa, %for.cond.loopexit ]
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; CHECK: br label %for.cond1
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; CHECK: for.cond1:
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; CHECK: %sum.1 = phi i32 [ %add, %land.rhs ], [ %sum.04, %for.cond1.preheader ]
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; CHECK: %i.1 = phi i32 [ %inc, %land.rhs ], [ 0, %for.cond1.preheader ]
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; CHECK: %cmp2 = icmp ult i32 %i.1, 100
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; CHECK: br i1 %cmp2, label %land.rhs, label %for.cond.loopexit
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}
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define void @test2(i32 %x) nounwind {
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entry:
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br label %for.cond
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for.cond: ; preds = %if.end, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %if.end ]
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%cmp = icmp eq i32 %i.0, %x
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br i1 %cmp, label %return.loopexit, label %for.body
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for.body: ; preds = %for.cond
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%call = tail call i32 @foo(i32 %i.0) nounwind
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%tobool = icmp eq i32 %call, 0
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br i1 %tobool, label %if.end, label %a
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if.end: ; preds = %for.body
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%call1 = tail call i32 @foo(i32 42) nounwind
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%inc = add i32 %i.0, 1
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br label %for.cond
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a: ; preds = %for.body
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%call2 = tail call i32 @bar(i32 1) nounwind
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br label %return
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return.loopexit: ; preds = %for.cond
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br label %return
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return: ; preds = %return.loopexit, %a
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ret void
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; CHECK: @test2
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; CHECK: if.end:
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; CHECK: %inc = add i32 %i.02, 1
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; CHECK: %cmp = icmp eq i32 %inc, %x
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; CHECK: br i1 %cmp, label %for.cond.return.loopexit_crit_edge, label %for.body
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}
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declare i32 @foo(i32)
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declare i32 @bar(i32)
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@_ZTIi = external constant i8*
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; Verify dominators.
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define void @test3(i32 %x) {
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entry:
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%cmp2 = icmp eq i32 0, %x
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br i1 %cmp2, label %try.cont.loopexit, label %for.body.lr.ph
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for.body.lr.ph: ; preds = %entry
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br label %for.body
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for.body: ; preds = %for.body.lr.ph, %for.inc
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%i.03 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.inc ]
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invoke void @_Z3fooi(i32 %i.03)
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to label %for.inc unwind label %lpad
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for.inc: ; preds = %for.body
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%inc = add i32 %i.03, 1
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%cmp = icmp eq i32 %inc, %x
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br i1 %cmp, label %for.cond.try.cont.loopexit_crit_edge, label %for.body
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lpad: ; preds = %for.body
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%0 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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catch i8* bitcast (i8** @_ZTIi to i8*)
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%1 = extractvalue { i8*, i32 } %0, 0
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%2 = extractvalue { i8*, i32 } %0, 1
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%3 = tail call i32 @llvm.eh.typeid.for(i8* bitcast (i8** @_ZTIi to i8*)) nounwind
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%matches = icmp eq i32 %2, %3
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br i1 %matches, label %catch, label %eh.resume
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catch: ; preds = %lpad
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%4 = tail call i8* @__cxa_begin_catch(i8* %1) nounwind
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br i1 true, label %invoke.cont2.loopexit, label %for.body.i.lr.ph
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for.body.i.lr.ph: ; preds = %catch
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br label %for.body.i
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for.body.i: ; preds = %for.body.i.lr.ph, %for.inc.i
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%i.0.i1 = phi i32 [ 0, %for.body.i.lr.ph ], [ %inc.i, %for.inc.i ]
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invoke void @_Z3fooi(i32 %i.0.i1)
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to label %for.inc.i unwind label %lpad.i
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for.inc.i: ; preds = %for.body.i
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%inc.i = add i32 %i.0.i1, 1
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%cmp.i = icmp eq i32 %inc.i, 0
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br i1 %cmp.i, label %for.cond.i.invoke.cont2.loopexit_crit_edge, label %for.body.i
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lpad.i: ; preds = %for.body.i
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%5 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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catch i8* bitcast (i8** @_ZTIi to i8*)
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%6 = extractvalue { i8*, i32 } %5, 0
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%7 = extractvalue { i8*, i32 } %5, 1
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%matches.i = icmp eq i32 %7, %3
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br i1 %matches.i, label %catch.i, label %lpad1.body
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catch.i: ; preds = %lpad.i
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%8 = tail call i8* @__cxa_begin_catch(i8* %6) nounwind
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invoke void @test3(i32 0)
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to label %invoke.cont2.i unwind label %lpad1.i
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invoke.cont2.i: ; preds = %catch.i
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tail call void @__cxa_end_catch() nounwind
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br label %invoke.cont2
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lpad1.i: ; preds = %catch.i
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%9 = landingpad { i8*, i32 } personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*)
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cleanup
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%10 = extractvalue { i8*, i32 } %9, 0
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%11 = extractvalue { i8*, i32 } %9, 1
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tail call void @__cxa_end_catch() nounwind
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br label %lpad1.body
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for.cond.i.invoke.cont2.loopexit_crit_edge: ; preds = %for.inc.i
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br label %invoke.cont2.loopexit
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invoke.cont2.loopexit: ; preds = %for.cond.i.invoke.cont2.loopexit_crit_edge, %catch
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br label %invoke.cont2
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invoke.cont2: ; preds = %invoke.cont2.loopexit, %invoke.cont2.i
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tail call void @__cxa_end_catch() nounwind
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br label %try.cont
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for.cond.try.cont.loopexit_crit_edge: ; preds = %for.inc
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br label %try.cont.loopexit
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try.cont.loopexit: ; preds = %for.cond.try.cont.loopexit_crit_edge, %entry
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br label %try.cont
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try.cont: ; preds = %try.cont.loopexit, %invoke.cont2
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ret void
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lpad1.body: ; preds = %lpad1.i, %lpad.i
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%exn.slot.0.i = phi i8* [ %10, %lpad1.i ], [ %6, %lpad.i ]
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%ehselector.slot.0.i = phi i32 [ %11, %lpad1.i ], [ %7, %lpad.i ]
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tail call void @__cxa_end_catch() nounwind
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br label %eh.resume
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eh.resume: ; preds = %lpad1.body, %lpad
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%exn.slot.0 = phi i8* [ %exn.slot.0.i, %lpad1.body ], [ %1, %lpad ]
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%ehselector.slot.0 = phi i32 [ %ehselector.slot.0.i, %lpad1.body ], [ %2, %lpad ]
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%lpad.val = insertvalue { i8*, i32 } undef, i8* %exn.slot.0, 0
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%lpad.val5 = insertvalue { i8*, i32 } %lpad.val, i32 %ehselector.slot.0, 1
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resume { i8*, i32 } %lpad.val5
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}
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declare void @_Z3fooi(i32)
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declare i32 @__gxx_personality_v0(...)
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declare i32 @llvm.eh.typeid.for(i8*) nounwind readnone
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declare i8* @__cxa_begin_catch(i8*)
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declare void @__cxa_end_catch()
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define void @test4() nounwind uwtable {
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entry:
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br label %"7"
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"3": ; preds = %"7"
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br i1 undef, label %"31", label %"4"
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"4": ; preds = %"3"
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%. = select i1 undef, float 0x3F50624DE0000000, float undef
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%0 = add i32 %1, 1
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br label %"7"
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"7": ; preds = %"4", %entry
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%1 = phi i32 [ %0, %"4" ], [ 0, %entry ]
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%2 = icmp slt i32 %1, 100
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br i1 %2, label %"3", label %"8"
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"8": ; preds = %"7"
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br i1 undef, label %"9", label %"31"
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"9": ; preds = %"8"
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br label %"33"
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"27": ; preds = %"31"
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unreachable
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"31": ; preds = %"8", %"3"
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br i1 undef, label %"27", label %"32"
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"32": ; preds = %"31"
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br label %"33"
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"33": ; preds = %"32", %"9"
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ret void
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}
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