mirror of
https://github.com/RPCS3/llvm-mirror.git
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86 lines
3.5 KiB
LLVM
86 lines
3.5 KiB
LLVM
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; RUN: opt < %s -basic-aa -aa-eval -print-all-alias-modref-info -basic-aa-recphi -disable-output 2>&1 | FileCheck %s
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; CHECK-LABEL: Function: simple: 5 pointers, 0 call sites
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; CHECK: NoAlias: float* %src1, float* %src2
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; CHECK: NoAlias: float* %phi, float* %src1
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; CHECK: MustAlias: float* %phi, float* %src2
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; CHECK: NoAlias: float* %next, float* %src1
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; CHECK: NoAlias: float* %next, float* %src2
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; CHECK: NoAlias: float* %next, float* %phi
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; CHECK: NoAlias: float* %g, float* %src1
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; CHECK: NoAlias: float* %g, float* %src2
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; CHECK: NoAlias: float* %g, float* %phi
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; CHECK: NoAlias: float* %g, float* %next
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define void @simple(float *%src1, float * noalias %src2, i32 %n) nounwind {
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entry:
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br label %loop
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loop:
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%phi = phi float* [ %src2, %entry ], [ %next, %loop ]
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%idx = phi i32 [ 0, %entry ], [ %idxn, %loop ]
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%next = getelementptr inbounds float, float* %phi, i32 1
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%g = getelementptr inbounds float, float* %src1, i32 3
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%l = load float, float* %phi
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%a = fadd float %l, 1.0
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store float %a, float* %g
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%idxn = add nsw nuw i32 %idx, 1
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%cmp5 = icmp eq i32 %idxn, %n
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br i1 %cmp5, label %end, label %loop
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end:
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ret void
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}
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; CHECK-LABEL: Function: notmust: 6 pointers, 0 call sites
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; CHECK: MustAlias: [2 x i32]* %tab, i8* %0
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; CHECK: PartialAlias: [2 x i32]* %tab, i32* %arrayidx
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; CHECK: NoAlias: i32* %arrayidx, i8* %0
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; CHECK: MustAlias: [2 x i32]* %tab, i32* %arrayidx1
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; CHECK: MustAlias: i32* %arrayidx1, i8* %0
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; CHECK: NoAlias: i32* %arrayidx, i32* %arrayidx1
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; CHECK: MustAlias: [2 x i32]* %tab, i32* %p.addr.05.i
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; CHECK: MustAlias: i32* %p.addr.05.i, i8* %0
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; CHECK: NoAlias: i32* %arrayidx, i32* %p.addr.05.i
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; CHECK: MustAlias: i32* %arrayidx1, i32* %p.addr.05.i
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; CHECK: PartialAlias: [2 x i32]* %tab, i32* %incdec.ptr.i
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; CHECK: NoAlias: i32* %incdec.ptr.i, i8* %0
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; CHECK: MustAlias: i32* %arrayidx, i32* %incdec.ptr.i
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; CHECK: NoAlias: i32* %arrayidx1, i32* %incdec.ptr.i
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; CHECK: NoAlias: i32* %incdec.ptr.i, i32* %p.addr.05.i
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define i32 @notmust() nounwind {
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entry:
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%tab = alloca [2 x i32], align 4
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%0 = bitcast [2 x i32]* %tab to i8*
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%arrayidx = getelementptr inbounds [2 x i32], [2 x i32]* %tab, i32 0, i32 1
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store i32 0, i32* %arrayidx, align 4
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%arrayidx1 = getelementptr inbounds [2 x i32], [2 x i32]* %tab, i32 0, i32 0
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store i32 0, i32* %arrayidx1, align 4
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%1 = add i32 1, 1
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%cmp4.i = icmp slt i32 %1, 2
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br i1 %cmp4.i, label %while.body.i, label %f.exit
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while.body.i: ; preds = %while.body.i, %entry
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%2 = phi i32 [ 1, %while.body.i ], [ %1, %entry ]
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%foo.06.i = phi i32 [ %sub.i, %while.body.i ], [ 2, %entry ]
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%p.addr.05.i = phi i32* [ %incdec.ptr.i, %while.body.i ], [ %arrayidx1, %entry ]
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%sub.i = sub nsw i32 %foo.06.i, %2
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%incdec.ptr.i = getelementptr inbounds i32, i32* %p.addr.05.i, i32 1
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store i32 %sub.i, i32* %p.addr.05.i, align 4
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%cmp.i = icmp sgt i32 %sub.i, 1
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br i1 %cmp.i, label %while.body.i, label %f.exit
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f.exit: ; preds = %entry, %while.body.i
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%3 = load i32, i32* %arrayidx1, align 4
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%cmp = icmp eq i32 %3, 2
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%4 = load i32, i32* %arrayidx, align 4
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%cmp4 = icmp eq i32 %4, 1
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%or.cond = and i1 %cmp, %cmp4
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br i1 %or.cond, label %if.end, label %if.then
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if.then: ; preds = %f.exit
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unreachable
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if.end: ; preds = %f.exit
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ret i32 0
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}
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