test/Analysis/BranchProbabilityInfo/loop.ll - platform/external/llvm - Git at Google

 ; Test the static branch probability heuristics for no-return functions.
 ; RUN: opt < %s -analyze -branch-prob | FileCheck %s

 declare void @g1()
 declare void @g2()
 declare void @g3()
 declare void @g4()

 define void @test1(i32 %a, i32 %b) {
 entry:
   br label %do.body
 ; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

 do.body:
   %i.0 = phi i32 [ 0, %entry ], [ %inc3, %do.end ]
   call void @g1()
   br label %do.body1
 ; CHECK: edge do.body -> do.body1 probability is 124 / 124 = 100%

 do.body1:
   %j.0 = phi i32 [ 0, %do.body ], [ %inc, %do.body1 ]
   call void @g2()
   %inc = add nsw i32 %j.0, 1
   %cmp = icmp slt i32 %inc, %b
   br i1 %cmp, label %do.body1, label %do.end
 ; CHECK: edge do.body1 -> do.body1 probability is 124 / 128
 ; CHECK: edge do.body1 -> do.end probability is 4 / 128

 do.end:
   call void @g3()
   %inc3 = add nsw i32 %i.0, 1
   %cmp4 = icmp slt i32 %inc3, %a
   br i1 %cmp4, label %do.body, label %do.end5
 ; CHECK: edge do.end -> do.body probability is 124 / 128
 ; CHECK: edge do.end -> do.end5 probability is 4 / 128

 do.end5:
   call void @g4()
   ret void
 }

 define void @test2(i32 %a, i32 %b) {
 entry:
   %cmp9 = icmp sgt i32 %a, 0
   br i1 %cmp9, label %for.body.lr.ph, label %for.end6
 ; CHECK: edge entry -> for.body.lr.ph probability is 20 / 32
 ; CHECK: edge entry -> for.end6 probability is 12 / 32

 for.body.lr.ph:
   %cmp27 = icmp sgt i32 %b, 0
   br label %for.body
 ; CHECK: edge for.body.lr.ph -> for.body probability is 16 / 16 = 100%

 for.body:
   %i.010 = phi i32 [ 0, %for.body.lr.ph ], [ %inc5, %for.end ]
   call void @g1()
   br i1 %cmp27, label %for.body3, label %for.end
 ; CHECK: edge for.body -> for.body3 probability is 62 / 124 = 50%
 ; CHECK: edge for.body -> for.end probability is 62 / 124 = 50%

 for.body3:
   %j.08 = phi i32 [ %inc, %for.body3 ], [ 0, %for.body ]
   call void @g2()
   %inc = add nsw i32 %j.08, 1
   %exitcond = icmp eq i32 %inc, %b
   br i1 %exitcond, label %for.end, label %for.body3
 ; CHECK: edge for.body3 -> for.end probability is 4 / 128
 ; CHECK: edge for.body3 -> for.body3 probability is 124 / 128

 for.end:
   call void @g3()
   %inc5 = add nsw i32 %i.010, 1
   %exitcond11 = icmp eq i32 %inc5, %a
   br i1 %exitcond11, label %for.end6, label %for.body
 ; CHECK: edge for.end -> for.end6 probability is 4 / 128
 ; CHECK: edge for.end -> for.body probability is 124 / 128

 for.end6:
   call void @g4()
   ret void
 }

 define void @test3(i32 %a, i32 %b, i32* %c) {
 entry:
   br label %do.body
 ; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

 do.body:
   %i.0 = phi i32 [ 0, %entry ], [ %inc4, %if.end ]
   call void @g1()
   %0 = load i32* %c, align 4
   %cmp = icmp slt i32 %0, 42
   br i1 %cmp, label %do.body1, label %if.end
 ; CHECK: edge do.body -> do.body1 probability is 62 / 124 = 50%
 ; CHECK: edge do.body -> if.end probability is 62 / 124 = 50%

 do.body1:
   %j.0 = phi i32 [ %inc, %do.body1 ], [ 0, %do.body ]
   call void @g2()
   %inc = add nsw i32 %j.0, 1
   %cmp2 = icmp slt i32 %inc, %b
   br i1 %cmp2, label %do.body1, label %if.end
 ; CHECK: edge do.body1 -> do.body1 probability is 124 / 128
 ; CHECK: edge do.body1 -> if.end probability is 4 / 128

 if.end:
   call void @g3()
   %inc4 = add nsw i32 %i.0, 1
   %cmp5 = icmp slt i32 %inc4, %a
   br i1 %cmp5, label %do.body, label %do.end6
 ; CHECK: edge if.end -> do.body probability is 124 / 128
 ; CHECK: edge if.end -> do.end6 probability is 4 / 128

 do.end6:
   call void @g4()
   ret void
 }

 define void @test4(i32 %a, i32 %b, i32* %c) {
 entry:
   br label %do.body
 ; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

 do.body:
   %i.0 = phi i32 [ 0, %entry ], [ %inc4, %do.end ]
   call void @g1()
   %0 = load i32* %c, align 4
   %cmp = icmp slt i32 %0, 42
   br i1 %cmp, label %return, label %do.body1
 ; CHECK: edge do.body -> return probability is 4 / 128
 ; CHECK: edge do.body -> do.body1 probability is 124 / 128

 do.body1:
   %j.0 = phi i32 [ %inc, %do.body1 ], [ 0, %do.body ]
   call void @g2()
   %inc = add nsw i32 %j.0, 1
   %cmp2 = icmp slt i32 %inc, %b
   br i1 %cmp2, label %do.body1, label %do.end
 ; CHECK: edge do.body1 -> do.body1 probability is 124 / 128
 ; CHECK: edge do.body1 -> do.end probability is 4 / 128

 do.end:
   call void @g3()
   %inc4 = add nsw i32 %i.0, 1
   %cmp5 = icmp slt i32 %inc4, %a
   br i1 %cmp5, label %do.body, label %do.end6
 ; CHECK: edge do.end -> do.body probability is 124 / 128
 ; CHECK: edge do.end -> do.end6 probability is 4 / 128

 do.end6:
   call void @g4()
   br label %return
 ; CHECK: edge do.end6 -> return probability is 16 / 16 = 100%

 return:
   ret void
 }

 define void @test5(i32 %a, i32 %b, i32* %c) {
 entry:
   br label %do.body
 ; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

 do.body:
   %i.0 = phi i32 [ 0, %entry ], [ %inc4, %do.end ]
   call void @g1()
   br label %do.body1
 ; CHECK: edge do.body -> do.body1 probability is 124 / 124 = 100%

 do.body1:
   %j.0 = phi i32 [ 0, %do.body ], [ %inc, %if.end ]
   %0 = load i32* %c, align 4
   %cmp = icmp slt i32 %0, 42
   br i1 %cmp, label %return, label %if.end
 ; CHECK: edge do.body1 -> return probability is 4 / 128
 ; CHECK: edge do.body1 -> if.end probability is 124 / 128

 if.end:
   call void @g2()
   %inc = add nsw i32 %j.0, 1
   %cmp2 = icmp slt i32 %inc, %b
   br i1 %cmp2, label %do.body1, label %do.end
 ; CHECK: edge if.end -> do.body1 probability is 124 / 128
 ; CHECK: edge if.end -> do.end probability is 4 / 128

 do.end:
   call void @g3()
   %inc4 = add nsw i32 %i.0, 1
   %cmp5 = icmp slt i32 %inc4, %a
   br i1 %cmp5, label %do.body, label %do.end6
 ; CHECK: edge do.end -> do.body probability is 124 / 128
 ; CHECK: edge do.end -> do.end6 probability is 4 / 128

 do.end6:
   call void @g4()
   br label %return
 ; CHECK: edge do.end6 -> return probability is 16 / 16 = 100%

 return:
   ret void
 }

 define void @test6(i32 %a, i32 %b, i32* %c) {
 entry:
   br label %do.body
 ; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

 do.body:
   %i.0 = phi i32 [ 0, %entry ], [ %inc4, %do.end ]
   call void @g1()
   br label %do.body1
 ; CHECK: edge do.body -> do.body1 probability is 124 / 124 = 100%

 do.body1:
   %j.0 = phi i32 [ 0, %do.body ], [ %inc, %do.cond ]
   call void @g2()
   %0 = load i32* %c, align 4
   %cmp = icmp slt i32 %0, 42
   br i1 %cmp, label %return, label %do.cond
 ; CHECK: edge do.body1 -> return probability is 4 / 128
 ; CHECK: edge do.body1 -> do.cond probability is 124 / 128

 do.cond:
   %inc = add nsw i32 %j.0, 1
   %cmp2 = icmp slt i32 %inc, %b
   br i1 %cmp2, label %do.body1, label %do.end
 ; CHECK: edge do.cond -> do.body1 probability is 124 / 128
 ; CHECK: edge do.cond -> do.end probability is 4 / 128

 do.end:
   call void @g3()
   %inc4 = add nsw i32 %i.0, 1
   %cmp5 = icmp slt i32 %inc4, %a
   br i1 %cmp5, label %do.body, label %do.end6
 ; CHECK: edge do.end -> do.body probability is 124 / 128
 ; CHECK: edge do.end -> do.end6 probability is 4 / 128

 do.end6:
   call void @g4()
   br label %return
 ; CHECK: edge do.end6 -> return probability is 16 / 16 = 100%

 return:
   ret void
 }

 define void @test7(i32 %a, i32 %b, i32* %c) {
 entry:
   %cmp10 = icmp sgt i32 %a, 0
   br i1 %cmp10, label %for.body.lr.ph, label %for.end7
 ; CHECK: edge entry -> for.body.lr.ph probability is 20 / 32
 ; CHECK: edge entry -> for.end7 probability is 12 / 32

 for.body.lr.ph:
   %cmp38 = icmp sgt i32 %b, 0
   br label %for.body
 ; CHECK: edge for.body.lr.ph -> for.body probability is 16 / 16 = 100%

 for.body:
   %i.011 = phi i32 [ 0, %for.body.lr.ph ], [ %inc6, %for.inc5 ]
   %0 = load i32* %c, align 4
   %cmp1 = icmp eq i32 %0, %i.011
   br i1 %cmp1, label %for.inc5, label %if.end
 ; CHECK: edge for.body -> for.inc5 probability is 62 / 124 = 50%
 ; CHECK: edge for.body -> if.end probability is 62 / 124 = 50%

 if.end:
   call void @g1()
   br i1 %cmp38, label %for.body4, label %for.end
 ; CHECK: edge if.end -> for.body4 probability is 62 / 124 = 50%
 ; CHECK: edge if.end -> for.end probability is 62 / 124 = 50%

 for.body4:
   %j.09 = phi i32 [ %inc, %for.body4 ], [ 0, %if.end ]
   call void @g2()
   %inc = add nsw i32 %j.09, 1
   %exitcond = icmp eq i32 %inc, %b
   br i1 %exitcond, label %for.end, label %for.body4
 ; CHECK: edge for.body4 -> for.end probability is 4 / 128
 ; CHECK: edge for.body4 -> for.body4 probability is 124 / 128

 for.end:
   call void @g3()
   br label %for.inc5
 ; CHECK: edge for.end -> for.inc5 probability is 124 / 124 = 100%

 for.inc5:
   %inc6 = add nsw i32 %i.011, 1
   %exitcond12 = icmp eq i32 %inc6, %a
   br i1 %exitcond12, label %for.end7, label %for.body
 ; CHECK: edge for.inc5 -> for.end7 probability is 4 / 128
 ; CHECK: edge for.inc5 -> for.body probability is 124 / 128

 for.end7:
   call void @g4()
   ret void
 }

 define void @test8(i32 %a, i32 %b, i32* %c) {
 entry:
   %cmp18 = icmp sgt i32 %a, 0
   br i1 %cmp18, label %for.body.lr.ph, label %for.end15
 ; CHECK: edge entry -> for.body.lr.ph probability is 20 / 32
 ; CHECK: edge entry -> for.end15 probability is 12 / 32

 for.body.lr.ph:
   %cmp216 = icmp sgt i32 %b, 0
   %arrayidx5 = getelementptr inbounds i32* %c, i64 1
   %arrayidx9 = getelementptr inbounds i32* %c, i64 2
   br label %for.body
 ; CHECK: edge for.body.lr.ph -> for.body probability is 16 / 16 = 100%

 for.body:
   %i.019 = phi i32 [ 0, %for.body.lr.ph ], [ %inc14, %for.end ]
   call void @g1()
   br i1 %cmp216, label %for.body3, label %for.end
 ; CHECK: edge for.body -> for.body3 probability is 62 / 124 = 50%
 ; CHECK: edge for.body -> for.end probability is 62 / 124 = 50%

 for.body3:
   %j.017 = phi i32 [ 0, %for.body ], [ %inc, %for.inc ]
   %0 = load i32* %c, align 4
   %cmp4 = icmp eq i32 %0, %j.017
   br i1 %cmp4, label %for.inc, label %if.end
 ; CHECK: edge for.body3 -> for.inc probability is 62 / 124 = 50%
 ; CHECK: edge for.body3 -> if.end probability is 62 / 124 = 50%

 if.end:
   %1 = load i32* %arrayidx5, align 4
   %cmp6 = icmp eq i32 %1, %j.017
   br i1 %cmp6, label %for.inc, label %if.end8
 ; CHECK: edge if.end -> for.inc probability is 62 / 124 = 50%
 ; CHECK: edge if.end -> if.end8 probability is 62 / 124 = 50%

 if.end8:
   %2 = load i32* %arrayidx9, align 4
   %cmp10 = icmp eq i32 %2, %j.017
   br i1 %cmp10, label %for.inc, label %if.end12
 ; CHECK: edge if.end8 -> for.inc probability is 62 / 124 = 50%
 ; CHECK: edge if.end8 -> if.end12 probability is 62 / 124 = 50%

 if.end12:
   call void @g2()
   br label %for.inc
 ; CHECK: edge if.end12 -> for.inc probability is 124 / 124 = 100%

 for.inc:
   %inc = add nsw i32 %j.017, 1
   %exitcond = icmp eq i32 %inc, %b
   br i1 %exitcond, label %for.end, label %for.body3
 ; CHECK: edge for.inc -> for.end probability is 4 / 128
 ; CHECK: edge for.inc -> for.body3 probability is 124 / 128

 for.end:
   call void @g3()
   %inc14 = add nsw i32 %i.019, 1
   %exitcond20 = icmp eq i32 %inc14, %a
   br i1 %exitcond20, label %for.end15, label %for.body
 ; CHECK: edge for.end -> for.end15 probability is 4 / 128
 ; CHECK: edge for.end -> for.body probability is 124 / 128

 for.end15:
   call void @g4()
   ret void
 }
	; Test the static branch probability heuristics for no-return functions.
	; RUN: opt < %s -analyze -branch-prob \| FileCheck %s

	declare void @g1()
	declare void @g2()
	declare void @g3()
	declare void @g4()

	define void @test1(i32 %a, i32 %b) {
	entry:
	br label %do.body
	; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

	do.body:
	%i.0 = phi i32 [ 0, %entry ], [ %inc3, %do.end ]
	call void @g1()
	br label %do.body1
	; CHECK: edge do.body -> do.body1 probability is 124 / 124 = 100%

	do.body1:
	%j.0 = phi i32 [ 0, %do.body ], [ %inc, %do.body1 ]
	call void @g2()
	%inc = add nsw i32 %j.0, 1
	%cmp = icmp slt i32 %inc, %b
	br i1 %cmp, label %do.body1, label %do.end
	; CHECK: edge do.body1 -> do.body1 probability is 124 / 128
	; CHECK: edge do.body1 -> do.end probability is 4 / 128

	do.end:
	call void @g3()
	%inc3 = add nsw i32 %i.0, 1
	%cmp4 = icmp slt i32 %inc3, %a
	br i1 %cmp4, label %do.body, label %do.end5
	; CHECK: edge do.end -> do.body probability is 124 / 128
	; CHECK: edge do.end -> do.end5 probability is 4 / 128

	do.end5:
	call void @g4()
	ret void
	}

	define void @test2(i32 %a, i32 %b) {
	entry:
	%cmp9 = icmp sgt i32 %a, 0
	br i1 %cmp9, label %for.body.lr.ph, label %for.end6
	; CHECK: edge entry -> for.body.lr.ph probability is 20 / 32
	; CHECK: edge entry -> for.end6 probability is 12 / 32

	for.body.lr.ph:
	%cmp27 = icmp sgt i32 %b, 0
	br label %for.body
	; CHECK: edge for.body.lr.ph -> for.body probability is 16 / 16 = 100%

	for.body:
	%i.010 = phi i32 [ 0, %for.body.lr.ph ], [ %inc5, %for.end ]
	call void @g1()
	br i1 %cmp27, label %for.body3, label %for.end
	; CHECK: edge for.body -> for.body3 probability is 62 / 124 = 50%
	; CHECK: edge for.body -> for.end probability is 62 / 124 = 50%

	for.body3:
	%j.08 = phi i32 [ %inc, %for.body3 ], [ 0, %for.body ]
	call void @g2()
	%inc = add nsw i32 %j.08, 1
	%exitcond = icmp eq i32 %inc, %b
	br i1 %exitcond, label %for.end, label %for.body3
	; CHECK: edge for.body3 -> for.end probability is 4 / 128
	; CHECK: edge for.body3 -> for.body3 probability is 124 / 128

	for.end:
	call void @g3()
	%inc5 = add nsw i32 %i.010, 1
	%exitcond11 = icmp eq i32 %inc5, %a
	br i1 %exitcond11, label %for.end6, label %for.body
	; CHECK: edge for.end -> for.end6 probability is 4 / 128
	; CHECK: edge for.end -> for.body probability is 124 / 128

	for.end6:
	call void @g4()
	ret void
	}

	define void @test3(i32 %a, i32 %b, i32* %c) {
	entry:
	br label %do.body
	; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

	do.body:
	%i.0 = phi i32 [ 0, %entry ], [ %inc4, %if.end ]
	call void @g1()
	%0 = load i32* %c, align 4
	%cmp = icmp slt i32 %0, 42
	br i1 %cmp, label %do.body1, label %if.end
	; CHECK: edge do.body -> do.body1 probability is 62 / 124 = 50%
	; CHECK: edge do.body -> if.end probability is 62 / 124 = 50%

	do.body1:
	%j.0 = phi i32 [ %inc, %do.body1 ], [ 0, %do.body ]
	call void @g2()
	%inc = add nsw i32 %j.0, 1
	%cmp2 = icmp slt i32 %inc, %b
	br i1 %cmp2, label %do.body1, label %if.end
	; CHECK: edge do.body1 -> do.body1 probability is 124 / 128
	; CHECK: edge do.body1 -> if.end probability is 4 / 128

	if.end:
	call void @g3()
	%inc4 = add nsw i32 %i.0, 1
	%cmp5 = icmp slt i32 %inc4, %a
	br i1 %cmp5, label %do.body, label %do.end6
	; CHECK: edge if.end -> do.body probability is 124 / 128
	; CHECK: edge if.end -> do.end6 probability is 4 / 128

	do.end6:
	call void @g4()
	ret void
	}

	define void @test4(i32 %a, i32 %b, i32* %c) {
	entry:
	br label %do.body
	; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

	do.body:
	%i.0 = phi i32 [ 0, %entry ], [ %inc4, %do.end ]
	call void @g1()
	%0 = load i32* %c, align 4
	%cmp = icmp slt i32 %0, 42
	br i1 %cmp, label %return, label %do.body1
	; CHECK: edge do.body -> return probability is 4 / 128
	; CHECK: edge do.body -> do.body1 probability is 124 / 128

	do.body1:
	%j.0 = phi i32 [ %inc, %do.body1 ], [ 0, %do.body ]
	call void @g2()
	%inc = add nsw i32 %j.0, 1
	%cmp2 = icmp slt i32 %inc, %b
	br i1 %cmp2, label %do.body1, label %do.end
	; CHECK: edge do.body1 -> do.body1 probability is 124 / 128
	; CHECK: edge do.body1 -> do.end probability is 4 / 128

	do.end:
	call void @g3()
	%inc4 = add nsw i32 %i.0, 1
	%cmp5 = icmp slt i32 %inc4, %a
	br i1 %cmp5, label %do.body, label %do.end6
	; CHECK: edge do.end -> do.body probability is 124 / 128
	; CHECK: edge do.end -> do.end6 probability is 4 / 128

	do.end6:
	call void @g4()
	br label %return
	; CHECK: edge do.end6 -> return probability is 16 / 16 = 100%

	return:
	ret void
	}

	define void @test5(i32 %a, i32 %b, i32* %c) {
	entry:
	br label %do.body
	; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

	do.body:
	%i.0 = phi i32 [ 0, %entry ], [ %inc4, %do.end ]
	call void @g1()
	br label %do.body1
	; CHECK: edge do.body -> do.body1 probability is 124 / 124 = 100%

	do.body1:
	%j.0 = phi i32 [ 0, %do.body ], [ %inc, %if.end ]
	%0 = load i32* %c, align 4
	%cmp = icmp slt i32 %0, 42
	br i1 %cmp, label %return, label %if.end
	; CHECK: edge do.body1 -> return probability is 4 / 128
	; CHECK: edge do.body1 -> if.end probability is 124 / 128

	if.end:
	call void @g2()
	%inc = add nsw i32 %j.0, 1
	%cmp2 = icmp slt i32 %inc, %b
	br i1 %cmp2, label %do.body1, label %do.end
	; CHECK: edge if.end -> do.body1 probability is 124 / 128
	; CHECK: edge if.end -> do.end probability is 4 / 128

	do.end:
	call void @g3()
	%inc4 = add nsw i32 %i.0, 1
	%cmp5 = icmp slt i32 %inc4, %a
	br i1 %cmp5, label %do.body, label %do.end6
	; CHECK: edge do.end -> do.body probability is 124 / 128
	; CHECK: edge do.end -> do.end6 probability is 4 / 128

	do.end6:
	call void @g4()
	br label %return
	; CHECK: edge do.end6 -> return probability is 16 / 16 = 100%

	return:
	ret void
	}

	define void @test6(i32 %a, i32 %b, i32* %c) {
	entry:
	br label %do.body
	; CHECK: edge entry -> do.body probability is 16 / 16 = 100%

	do.body:
	%i.0 = phi i32 [ 0, %entry ], [ %inc4, %do.end ]
	call void @g1()
	br label %do.body1
	; CHECK: edge do.body -> do.body1 probability is 124 / 124 = 100%

	do.body1:
	%j.0 = phi i32 [ 0, %do.body ], [ %inc, %do.cond ]
	call void @g2()
	%0 = load i32* %c, align 4
	%cmp = icmp slt i32 %0, 42
	br i1 %cmp, label %return, label %do.cond
	; CHECK: edge do.body1 -> return probability is 4 / 128
	; CHECK: edge do.body1 -> do.cond probability is 124 / 128

	do.cond:
	%inc = add nsw i32 %j.0, 1
	%cmp2 = icmp slt i32 %inc, %b
	br i1 %cmp2, label %do.body1, label %do.end
	; CHECK: edge do.cond -> do.body1 probability is 124 / 128
	; CHECK: edge do.cond -> do.end probability is 4 / 128

	do.end:
	call void @g3()
	%inc4 = add nsw i32 %i.0, 1
	%cmp5 = icmp slt i32 %inc4, %a
	br i1 %cmp5, label %do.body, label %do.end6
	; CHECK: edge do.end -> do.body probability is 124 / 128
	; CHECK: edge do.end -> do.end6 probability is 4 / 128

	do.end6:
	call void @g4()
	br label %return
	; CHECK: edge do.end6 -> return probability is 16 / 16 = 100%

	return:
	ret void
	}

	define void @test7(i32 %a, i32 %b, i32* %c) {
	entry:
	%cmp10 = icmp sgt i32 %a, 0
	br i1 %cmp10, label %for.body.lr.ph, label %for.end7
	; CHECK: edge entry -> for.body.lr.ph probability is 20 / 32
	; CHECK: edge entry -> for.end7 probability is 12 / 32

	for.body.lr.ph:
	%cmp38 = icmp sgt i32 %b, 0
	br label %for.body
	; CHECK: edge for.body.lr.ph -> for.body probability is 16 / 16 = 100%

	for.body:
	%i.011 = phi i32 [ 0, %for.body.lr.ph ], [ %inc6, %for.inc5 ]
	%0 = load i32* %c, align 4
	%cmp1 = icmp eq i32 %0, %i.011
	br i1 %cmp1, label %for.inc5, label %if.end
	; CHECK: edge for.body -> for.inc5 probability is 62 / 124 = 50%
	; CHECK: edge for.body -> if.end probability is 62 / 124 = 50%

	if.end:
	call void @g1()
	br i1 %cmp38, label %for.body4, label %for.end
	; CHECK: edge if.end -> for.body4 probability is 62 / 124 = 50%
	; CHECK: edge if.end -> for.end probability is 62 / 124 = 50%

	for.body4:
	%j.09 = phi i32 [ %inc, %for.body4 ], [ 0, %if.end ]
	call void @g2()
	%inc = add nsw i32 %j.09, 1
	%exitcond = icmp eq i32 %inc, %b
	br i1 %exitcond, label %for.end, label %for.body4
	; CHECK: edge for.body4 -> for.end probability is 4 / 128
	; CHECK: edge for.body4 -> for.body4 probability is 124 / 128

	for.end:
	call void @g3()
	br label %for.inc5
	; CHECK: edge for.end -> for.inc5 probability is 124 / 124 = 100%

	for.inc5:
	%inc6 = add nsw i32 %i.011, 1
	%exitcond12 = icmp eq i32 %inc6, %a
	br i1 %exitcond12, label %for.end7, label %for.body
	; CHECK: edge for.inc5 -> for.end7 probability is 4 / 128
	; CHECK: edge for.inc5 -> for.body probability is 124 / 128

	for.end7:
	call void @g4()
	ret void
	}

	define void @test8(i32 %a, i32 %b, i32* %c) {
	entry:
	%cmp18 = icmp sgt i32 %a, 0
	br i1 %cmp18, label %for.body.lr.ph, label %for.end15
	; CHECK: edge entry -> for.body.lr.ph probability is 20 / 32
	; CHECK: edge entry -> for.end15 probability is 12 / 32

	for.body.lr.ph:
	%cmp216 = icmp sgt i32 %b, 0
	%arrayidx5 = getelementptr inbounds i32* %c, i64 1
	%arrayidx9 = getelementptr inbounds i32* %c, i64 2
	br label %for.body
	; CHECK: edge for.body.lr.ph -> for.body probability is 16 / 16 = 100%

	for.body:
	%i.019 = phi i32 [ 0, %for.body.lr.ph ], [ %inc14, %for.end ]
	call void @g1()
	br i1 %cmp216, label %for.body3, label %for.end
	; CHECK: edge for.body -> for.body3 probability is 62 / 124 = 50%
	; CHECK: edge for.body -> for.end probability is 62 / 124 = 50%

	for.body3:
	%j.017 = phi i32 [ 0, %for.body ], [ %inc, %for.inc ]
	%0 = load i32* %c, align 4
	%cmp4 = icmp eq i32 %0, %j.017
	br i1 %cmp4, label %for.inc, label %if.end
	; CHECK: edge for.body3 -> for.inc probability is 62 / 124 = 50%
	; CHECK: edge for.body3 -> if.end probability is 62 / 124 = 50%

	if.end:
	%1 = load i32* %arrayidx5, align 4
	%cmp6 = icmp eq i32 %1, %j.017
	br i1 %cmp6, label %for.inc, label %if.end8
	; CHECK: edge if.end -> for.inc probability is 62 / 124 = 50%
	; CHECK: edge if.end -> if.end8 probability is 62 / 124 = 50%

	if.end8:
	%2 = load i32* %arrayidx9, align 4
	%cmp10 = icmp eq i32 %2, %j.017
	br i1 %cmp10, label %for.inc, label %if.end12
	; CHECK: edge if.end8 -> for.inc probability is 62 / 124 = 50%
	; CHECK: edge if.end8 -> if.end12 probability is 62 / 124 = 50%

	if.end12:
	call void @g2()
	br label %for.inc
	; CHECK: edge if.end12 -> for.inc probability is 124 / 124 = 100%

	for.inc:
	%inc = add nsw i32 %j.017, 1
	%exitcond = icmp eq i32 %inc, %b
	br i1 %exitcond, label %for.end, label %for.body3
	; CHECK: edge for.inc -> for.end probability is 4 / 128
	; CHECK: edge for.inc -> for.body3 probability is 124 / 128

	for.end:
	call void @g3()
	%inc14 = add nsw i32 %i.019, 1
	%exitcond20 = icmp eq i32 %inc14, %a
	br i1 %exitcond20, label %for.end15, label %for.body
	; CHECK: edge for.end -> for.end15 probability is 4 / 128
	; CHECK: edge for.end -> for.body probability is 124 / 128

	for.end15:
	call void @g4()
	ret void
	}