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| author | Hal Finkel <hfinkel@anl.gov> | 2016-07-11 03:08:49 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2016-07-11 03:08:49 +0000 |
| commit | bf3957a553810f8cab2050b6d81707e43583d007 (patch) | |
| tree | 72c2b7f570df1deeee15cd0e73f042a802fbf6cc /llvm/test/Analysis/ValueTracking/memory-dereferenceable.ll | |
| parent | e186debb8b08429bf075b14b645effaa7ca387a0 (diff) | |
| download | bcm5719-llvm-bf3957a553810f8cab2050b6d81707e43583d007.tar.gz bcm5719-llvm-bf3957a553810f8cab2050b6d81707e43583d007.zip | |
Teach isDereferenceablePointer to look through returned-argument functions
For functions which are known to return their argument,
isDereferenceableAndAlignedPointer can examine the argument value.
Differential Revision: http://reviews.llvm.org/D9384
llvm-svn: 275038
Diffstat (limited to 'llvm/test/Analysis/ValueTracking/memory-dereferenceable.ll')
| -rw-r--r-- | llvm/test/Analysis/ValueTracking/memory-dereferenceable.ll | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/test/Analysis/ValueTracking/memory-dereferenceable.ll b/llvm/test/Analysis/ValueTracking/memory-dereferenceable.ll index 15a93328974..29c31b95b18 100644 --- a/llvm/test/Analysis/ValueTracking/memory-dereferenceable.ll +++ b/llvm/test/Analysis/ValueTracking/memory-dereferenceable.ll @@ -43,7 +43,8 @@ entry: %load4 = load i32, i32 addrspace(1)* %relocate ; CHECK-NOT: %nparam - %nparam = getelementptr i32, i32 addrspace(1)* %dparam, i32 5 + %dpa = call i32 addrspace(1)* @func1(i32 addrspace(1)* %dparam) + %nparam = getelementptr i32, i32 addrspace(1)* %dpa, i32 5 %load5 = load i32, i32 addrspace(1)* %nparam ; Load from a non-dereferenceable load @@ -162,6 +163,8 @@ if.end: declare token @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...) declare i32 addrspace(1)* @llvm.experimental.gc.relocate.p1i32(token, i32, i32) +declare i32 addrspace(1)* @func1(i32 addrspace(1)* returned) nounwind argmemonly + !0 = !{i64 4} !1 = !{i64 2} !2 = !{} |
