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6d0392224e
it to actually test the new pass manager AA wiring. This patch was extracted from the (somewhat too large) D12357 and rebosed on top of the slightly different design of the new pass manager AA wiring that I just landed. With this we can start testing the AA in a thorough way with the new pass manager. Some minor cleanups to the code in the pass was necessitated here, but otherwise it is a very minimal change. Differential Revision: http://reviews.llvm.org/D17372 llvm-svn: 261403
81 lines
2.1 KiB
LLVM
81 lines
2.1 KiB
LLVM
; RUN: opt < %s -basicaa -aa-eval -print-all-alias-modref-info -disable-output 2>&1 | FileCheck %s
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; RUN: opt < %s -aa-pipeline=basic-aa -passes=aa-eval -print-all-alias-modref-info -disable-output 2>&1 | 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-unknown-linux-gnu"
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; rdar://7282591
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@X = common global i32 0
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@Y = common global i32 0
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@Z = common global i32 0
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; CHECK-LABEL: foo
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; CHECK: NoAlias: i32* %P, i32* @Z
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define void @foo(i32 %cond) nounwind {
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entry:
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%"alloca point" = bitcast i32 0 to i32
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%tmp = icmp ne i32 %cond, 0
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br i1 %tmp, label %bb, label %bb1
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bb:
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br label %bb2
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bb1:
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br label %bb2
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bb2:
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%P = phi i32* [ @X, %bb ], [ @Y, %bb1 ]
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%tmp1 = load i32, i32* @Z, align 4
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store i32 123, i32* %P, align 4
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%tmp2 = load i32, i32* @Z, align 4
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br label %return
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return:
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ret void
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}
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; Pointers can vary in between iterations of loops.
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; PR18068
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; CHECK-LABEL: pr18068
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; CHECK: MayAlias: i32* %0, i32* %arrayidx5
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; CHECK: NoAlias: i32* %arrayidx13, i32* %arrayidx5
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define i32 @pr18068(i32* %jj7, i32* %j) {
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entry:
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%oa5 = alloca [100 x i32], align 16
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br label %codeRepl
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codeRepl:
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%0 = phi i32* [ %arrayidx13, %for.body ], [ %j, %entry ]
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%targetBlock = call i1 @cond(i32* %jj7)
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br i1 %targetBlock, label %for.body, label %bye
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for.body:
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%1 = load i32, i32* %jj7, align 4
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%idxprom4 = zext i32 %1 to i64
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%arrayidx5 = getelementptr inbounds [100 x i32], [100 x i32]* %oa5, i64 0, i64 %idxprom4
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%2 = load i32, i32* %arrayidx5, align 4
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%sub6 = sub i32 %2, 6
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store i32 %sub6, i32* %arrayidx5, align 4
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; %0 and %arrayidx5 can alias! It is not safe to DSE the above store.
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%3 = load i32, i32* %0, align 4
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store i32 %3, i32* %arrayidx5, align 4
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%sub11 = add i32 %1, -1
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%idxprom12 = zext i32 %sub11 to i64
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%arrayidx13 = getelementptr inbounds [100 x i32], [100 x i32]* %oa5, i64 0, i64 %idxprom12
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call void @inc(i32* %jj7)
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br label %codeRepl
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bye:
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%.reload = load i32, i32* %jj7, align 4
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ret i32 %.reload
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}
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declare i1 @cond(i32*)
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declare void @inc(i32*)
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