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| author | Duncan Sands <baldrick@free.fr> | 2010-01-06 15:37:47 +0000 |
|---|---|---|
| committer | Duncan Sands <baldrick@free.fr> | 2010-01-06 15:37:47 +0000 |
| commit | e10920d678c4d6046619e51770de1c9de0c3fe0a (patch) | |
| tree | b546eb77c0bee59e72b6e4e4708c3a54cd522be0 /test/Transforms/FunctionAttrs | |
| parent | 0ecbdeb14f47b2391d138b7c3644e5f937ee0553 (diff) | |
| download | llvm-e10920d678c4d6046619e51770de1c9de0c3fe0a.tar.gz llvm-e10920d678c4d6046619e51770de1c9de0c3fe0a.tar.bz2 llvm-e10920d678c4d6046619e51770de1c9de0c3fe0a.tar.xz | |
Fix a README item: have functionattrs look through selects and
phi nodes when deciding which pointers point to local memory.
I actually checked long ago how useful this is, and it isn't
very: it hardly ever fires in the testsuite, but since Chris
wants it here it is!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@92836 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/FunctionAttrs')
| -rw-r--r-- | test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll b/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll index 460780d8ea..c6c2e13e33 100644 --- a/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll +++ b/test/Transforms/FunctionAttrs/2008-10-04-LocalMemory.ll @@ -1,10 +1,11 @@ -; RUN: opt < %s -functionattrs -S | grep readonly | count 3 +; RUN: opt < %s -functionattrs -S | FileCheck %s %struct.X = type { i32*, i32* } -declare i32 @g(i32*) readonly +declare i32 @g(i32*) readnone define i32 @f() { +; CHECK: @f() readnone %x = alloca i32 ; <i32*> [#uses=2] store i32 0, i32* %x %y = call i32 @g(i32* %x) ; <i32> [#uses=1] @@ -12,6 +13,7 @@ define i32 @f() { } define i32 @foo() nounwind { +; CHECK: @foo() nounwind readonly entry: %y = alloca %struct.X ; <%struct.X*> [#uses=2] %x = alloca %struct.X ; <%struct.X*> [#uses=2] @@ -36,4 +38,27 @@ return: ; preds = %entry ret i32 %4 } +define i32 @t(i32 %a, i32 %b, i32 %c) nounwind { +; CHECK: @t(i32 %a, i32 %b, i32 %c) nounwind readnone +entry: + %a.addr = alloca i32 ; <i32*> [#uses=3] + %c.addr = alloca i32 ; <i32*> [#uses=2] + store i32 %a, i32* %a.addr + store i32 %c, i32* %c.addr + %tmp = load i32* %a.addr ; <i32> [#uses=1] + %tobool = icmp ne i32 %tmp, 0 ; <i1> [#uses=1] + br i1 %tobool, label %if.then, label %if.else + +if.then: ; preds = %entry + br label %if.end + +if.else: ; preds = %entry + br label %if.end + +if.end: ; preds = %if.else, %if.then + %p.0 = phi i32* [ %a.addr, %if.then ], [ %c.addr, %if.else ] ; <i32*> [#uses=1] + %tmp2 = load i32* %p.0 ; <i32> [#uses=1] + ret i32 %tmp2 +} + declare void @llvm.memcpy.i64(i8* nocapture, i8* nocapture, i64, i32) nounwind |