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; RUN: opt < %s -passes='print<branch-prob>' -disable-output 2>&1 | FileCheck %s
@A = global i32 0, align 4
@B = global i32 0, align 4
; CHECK-LABEL: eq_opaque_minus_one
define void @eq_opaque_minus_one(i32* %base) {
entry:
%const = bitcast i32 -1 to i32
%tmp1 = load i32, i32* @B, align 4
br label %for.body
; CHECK: edge for.body -> if.then probability is 0x30000000 / 0x80000000 = 37.50%
; CHECK: edge for.body -> for.inc probability is 0x50000000 / 0x80000000 = 62.50%
for.body:
%tmp4 = phi i32 [ %tmp1, %entry ], [ %tmp7, %for.inc ]
%inc.iv = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%storemerge176.in = getelementptr inbounds i32, i32* %base, i32 %inc.iv
%storemerge176 = load i32, i32* %storemerge176.in, align 4
store i32 %storemerge176, i32* @A, align 4
%cmp20 = icmp eq i32 %storemerge176, %const
br i1 %cmp20, label %if.then, label %for.inc
if.then:
%lnot.ext = zext i1 %cmp20 to i32
store i32 %lnot.ext, i32* @B, align 4
br label %for.inc
for.inc:
%tmp7 = phi i32 [ %tmp4, %for.body ], [ %lnot.ext, %if.then ]
%inc = add nuw nsw i32 %inc.iv, 1
%cmp9 = icmp ult i32 %inc, 401
br i1 %cmp9, label %for.body, label %exit
exit:
ret void
}
; CHECK-LABEL: ne_opaque_minus_one
define void @ne_opaque_minus_one(i32* %base) {
entry:
%const = bitcast i32 -1 to i32
%tmp1 = load i32, i32* @B, align 4
br label %for.body
; CHECK: edge for.body -> if.then probability is 0x50000000 / 0x80000000 = 62.50%
; CHECK: edge for.body -> for.inc probability is 0x30000000 / 0x80000000 = 37.50%
for.body:
%tmp4 = phi i32 [ %tmp1, %entry ], [ %tmp7, %for.inc ]
%inc.iv = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%storemerge176.in = getelementptr inbounds i32, i32* %base, i32 %inc.iv
%storemerge176 = load i32, i32* %storemerge176.in, align 4
store i32 %storemerge176, i32* @A, align 4
%cmp20 = icmp ne i32 %storemerge176, %const
br i1 %cmp20, label %if.then, label %for.inc
if.then:
%lnot.ext = zext i1 %cmp20 to i32
store i32 %lnot.ext, i32* @B, align 4
br label %for.inc
for.inc:
%tmp7 = phi i32 [ %tmp4, %for.body ], [ %lnot.ext, %if.then ]
%inc = add nuw nsw i32 %inc.iv, 1
%cmp9 = icmp ult i32 %inc, 401
br i1 %cmp9, label %for.body, label %exit
exit:
ret void
}
; CHECK-LABEL: sgt_opaque_minus_one
define void @sgt_opaque_minus_one(i32* %base) {
entry:
%const = bitcast i32 -1 to i32
%tmp1 = load i32, i32* @B, align 4
br label %for.body
; CHECK: edge for.body -> if.then probability is 0x50000000 / 0x80000000 = 62.50%
; CHECK: edge for.body -> for.inc probability is 0x30000000 / 0x80000000 = 37.50%
for.body:
%tmp4 = phi i32 [ %tmp1, %entry ], [ %tmp7, %for.inc ]
%inc.iv = phi i32 [ 0, %entry ], [ %inc, %for.inc ]
%storemerge176.in = getelementptr inbounds i32, i32* %base, i32 %inc.iv
%storemerge176 = load i32, i32* %storemerge176.in, align 4
store i32 %storemerge176, i32* @A, align 4
%cmp20 = icmp sgt i32 %storemerge176, %const
br i1 %cmp20, label %if.then, label %for.inc
if.then:
%lnot.ext = zext i1 %cmp20 to i32
store i32 %lnot.ext, i32* @B, align 4
br label %for.inc
for.inc:
%tmp7 = phi i32 [ %tmp4, %for.body ], [ %lnot.ext, %if.then ]
%inc = add nuw nsw i32 %inc.iv, 1
%cmp9 = icmp ult i32 %inc, 401
br i1 %cmp9, label %for.body, label %exit
exit:
ret void
}
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