recphi.ll
8.32 KB
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; RUN: opt < %s -basic-aa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
; CHECK-LABEL: Function: simple: 5 pointers, 0 call sites
; CHECK: NoAlias: float* %src1, float* %src2
; CHECK: NoAlias: float* %phi, float* %src1
; CHECK: MayAlias: float* %phi, float* %src2
; CHECK: NoAlias: float* %next, float* %src1
; CHECK: MayAlias: float* %next, float* %src2
; CHECK: NoAlias: float* %next, float* %phi
; CHECK: NoAlias: float* %g, float* %src1
; CHECK: NoAlias: float* %g, float* %src2
; CHECK: NoAlias: float* %g, float* %phi
; CHECK: NoAlias: float* %g, float* %next
define void @simple(float *%src1, float * noalias %src2, i32 %n) nounwind {
entry:
br label %loop
loop:
%phi = phi float* [ %src2, %entry ], [ %next, %loop ]
%idx = phi i32 [ 0, %entry ], [ %idxn, %loop ]
%next = getelementptr inbounds float, float* %phi, i32 1
%g = getelementptr inbounds float, float* %src1, i32 3
%l = load float, float* %phi
%a = fadd float %l, 1.0
store float %a, float* %g
%idxn = add nsw nuw i32 %idx, 1
%cmp5 = icmp eq i32 %idxn, %n
br i1 %cmp5, label %end, label %loop
end:
ret void
}
; CHECK-LABEL: Function: notmust: 6 pointers, 0 call sites
; CHECK: MustAlias: [2 x i32]* %tab, i8* %0
; CHECK: PartialAlias: [2 x i32]* %tab, i32* %arrayidx
; CHECK: NoAlias: i32* %arrayidx, i8* %0
; CHECK: MustAlias: [2 x i32]* %tab, i32* %arrayidx1
; CHECK: MustAlias: i32* %arrayidx1, i8* %0
; CHECK: NoAlias: i32* %arrayidx, i32* %arrayidx1
; CHECK: MayAlias: [2 x i32]* %tab, i32* %p.addr.05.i
; CHECK: MayAlias: i32* %p.addr.05.i, i8* %0
; CHECK: MayAlias: i32* %arrayidx, i32* %p.addr.05.i
; CHECK: MayAlias: i32* %arrayidx1, i32* %p.addr.05.i
; CHECK: MayAlias: [2 x i32]* %tab, i32* %incdec.ptr.i
; CHECK: NoAlias: i32* %incdec.ptr.i, i8* %0
; CHECK: MayAlias: i32* %arrayidx, i32* %incdec.ptr.i
; CHECK: NoAlias: i32* %arrayidx1, i32* %incdec.ptr.i
; CHECK: NoAlias: i32* %incdec.ptr.i, i32* %p.addr.05.i
define i32 @notmust() nounwind {
entry:
%tab = alloca [2 x i32], align 4
%0 = bitcast [2 x i32]* %tab to i8*
%arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* %tab, i32 0, i32 1
store i32 0, i32* %arrayidx, align 4
%arrayidx1 = getelementptr inbounds [2 x i32], [2 x i32]* %tab, i32 0, i32 0
store i32 0, i32* %arrayidx1, align 4
%1 = add i32 1, 1
%cmp4.i = icmp slt i32 %1, 2
br i1 %cmp4.i, label %while.body.i, label %f.exit
while.body.i: ; preds = %while.body.i, %entry
%2 = phi i32 [ 1, %while.body.i ], [ %1, %entry ]
%foo.06.i = phi i32 [ %sub.i, %while.body.i ], [ 2, %entry ]
%p.addr.05.i = phi i32* [ %incdec.ptr.i, %while.body.i ], [ %arrayidx1, %entry ]
%sub.i = sub nsw i32 %foo.06.i, %2
%incdec.ptr.i = getelementptr inbounds i32, i32* %p.addr.05.i, i32 1
store i32 %sub.i, i32* %p.addr.05.i, align 4
%cmp.i = icmp sgt i32 %sub.i, 1
br i1 %cmp.i, label %while.body.i, label %f.exit
f.exit: ; preds = %entry, %while.body.i
%3 = load i32, i32* %arrayidx1, align 4
%cmp = icmp eq i32 %3, 2
%4 = load i32, i32* %arrayidx, align 4
%cmp4 = icmp eq i32 %4, 1
%or.cond = and i1 %cmp, %cmp4
br i1 %or.cond, label %if.end, label %if.then
if.then: ; preds = %f.exit
unreachable
if.end: ; preds = %f.exit
ret i32 0
}
; CHECK-LABEL: Function: reverse: 6 pointers, 0 call sites
; CHECK: MustAlias: [10 x i32]* %tab, i8* %0
; CHECK: MustAlias: [10 x i32]* %tab, i32* %arrayidx
; CHECK: MustAlias: i32* %arrayidx, i8* %0
; CHECK: PartialAlias: [10 x i32]* %tab, i32* %arrayidx1
; CHECK: NoAlias: i32* %arrayidx1, i8* %0
; CHECK: NoAlias: i32* %arrayidx, i32* %arrayidx1
; CHECK: MayAlias: [10 x i32]* %tab, i32* %p.addr.05.i
; CHECK: MayAlias: i32* %p.addr.05.i, i8* %0
; CHECK: MayAlias: i32* %arrayidx, i32* %p.addr.05.i
; CHECK: MayAlias: i32* %arrayidx1, i32* %p.addr.05.i
; CHECK: MayAlias: [10 x i32]* %tab, i32* %incdec.ptr.i
; CHECK: MayAlias: i32* %incdec.ptr.i, i8* %0
; CHECK: MayAlias: i32* %arrayidx, i32* %incdec.ptr.i
; CHECK: MayAlias: i32* %arrayidx1, i32* %incdec.ptr.i
; CHECK: NoAlias: i32* %incdec.ptr.i, i32* %p.addr.05.i
define i32 @reverse() nounwind {
entry:
%tab = alloca [10 x i32], align 4
%0 = bitcast [10 x i32]* %tab to i8*
%arrayidx = getelementptr inbounds [10 x i32], [10 x i32]* %tab, i32 0, i32 0
store i32 0, i32* %arrayidx, align 4
%arrayidx1 = getelementptr inbounds [10 x i32], [10 x i32]* %tab, i32 0, i32 9
store i32 0, i32* %arrayidx1, align 4
%1 = add i32 1, 1
%cmp4.i = icmp slt i32 %1, 2
br i1 %cmp4.i, label %while.body.i, label %f.exit
while.body.i: ; preds = %while.body.i, %entry
%2 = phi i32 [ 1, %while.body.i ], [ %1, %entry ]
%foo.06.i = phi i32 [ %sub.i, %while.body.i ], [ 2, %entry ]
%p.addr.05.i = phi i32* [ %incdec.ptr.i, %while.body.i ], [ %arrayidx1, %entry ]
%sub.i = sub nsw i32 %foo.06.i, %2
%incdec.ptr.i = getelementptr inbounds i32, i32* %p.addr.05.i, i32 -1
store i32 %sub.i, i32* %p.addr.05.i, align 4
%cmp.i = icmp sgt i32 %sub.i, 1
br i1 %cmp.i, label %while.body.i, label %f.exit
f.exit: ; preds = %entry, %while.body.i
%3 = load i32, i32* %arrayidx1, align 4
%cmp = icmp eq i32 %3, 2
%4 = load i32, i32* %arrayidx, align 4
%cmp4 = icmp eq i32 %4, 1
%or.cond = and i1 %cmp, %cmp4
br i1 %or.cond, label %if.end, label %if.then
if.then: ; preds = %f.exit
unreachable
if.end: ; preds = %f.exit
ret i32 0
}
; CHECK-LABEL: Function: negative: 6 pointers, 1 call sites
; CHECK: NoAlias: [3 x i16]* %int_arr.10, i16** %argv.6.par
; CHECK: NoAlias: i16* %_tmp1, i16** %argv.6.par
; CHECK: PartialAlias: [3 x i16]* %int_arr.10, i16* %_tmp1
; CHECK: MayAlias: i16* %ls1.9.0, i16** %argv.6.par
; CHECK: MayAlias: [3 x i16]* %int_arr.10, i16* %ls1.9.0
; CHECK: MayAlias: i16* %_tmp1, i16* %ls1.9.0
; CHECK: MayAlias: i16* %_tmp7, i16** %argv.6.par
; CHECK: MayAlias: [3 x i16]* %int_arr.10, i16* %_tmp7
; CHECK: MayAlias: i16* %_tmp1, i16* %_tmp7
; CHECK: NoAlias: i16* %_tmp7, i16* %ls1.9.0
; CHECK: NoAlias: i16* %_tmp11, i16** %argv.6.par
; CHECK: PartialAlias: [3 x i16]* %int_arr.10, i16* %_tmp11
; CHECK: NoAlias: i16* %_tmp1, i16* %_tmp11
; CHECK: MayAlias: i16* %_tmp11, i16* %ls1.9.0
; CHECK: MayAlias: i16* %_tmp11, i16* %_tmp7
; CHECK: Both ModRef: Ptr: i16** %argv.6.par <-> %_tmp16 = call i16 @call(i32 %_tmp13)
; CHECK: NoModRef: Ptr: [3 x i16]* %int_arr.10 <-> %_tmp16 = call i16 @call(i32 %_tmp13)
; CHECK: NoModRef: Ptr: i16* %_tmp1 <-> %_tmp16 = call i16 @call(i32 %_tmp13)
; CHECK: Both ModRef: Ptr: i16* %ls1.9.0 <-> %_tmp16 = call i16 @call(i32 %_tmp13)
; CHECK: Both ModRef: Ptr: i16* %_tmp7 <-> %_tmp16 = call i16 @call(i32 %_tmp13)
; CHECK: NoModRef: Ptr: i16* %_tmp11 <-> %_tmp16 = call i16 @call(i32 %_tmp13)
define i16 @negative(i16 %argc.5.par, i16** nocapture readnone %argv.6.par) {
%int_arr.10 = alloca [3 x i16], align 1
%_tmp1 = getelementptr inbounds [3 x i16], [3 x i16]* %int_arr.10, i16 0, i16 2
br label %bb1
bb1: ; preds = %bb1, %0
%i.7.0 = phi i16 [ 2, %0 ], [ %_tmp5, %bb1 ]
%ls1.9.0 = phi i16* [ %_tmp1, %0 ], [ %_tmp7, %bb1 ]
store i16 %i.7.0, i16* %ls1.9.0, align 1
%_tmp5 = add nsw i16 %i.7.0, -1
%_tmp7 = getelementptr i16, i16* %ls1.9.0, i16 -1
%_tmp9 = icmp sgt i16 %i.7.0, 0
br i1 %_tmp9, label %bb1, label %bb3
bb3: ; preds = %bb1
%_tmp11 = getelementptr inbounds [3 x i16], [3 x i16]* %int_arr.10, i16 0, i16 1
%_tmp12 = load i16, i16* %_tmp11, align 1
%_tmp13 = sext i16 %_tmp12 to i32
%_tmp16 = call i16 @call(i32 %_tmp13)
%_tmp18.not = icmp eq i16 %_tmp12, 1
br i1 %_tmp18.not, label %bb5, label %bb4
bb4: ; preds = %bb3
ret i16 1
bb5: ; preds = %bb3, %bb4
ret i16 0
}
declare i16 @call(i32)