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| author | Chad Rosier <mcrosier@apple.com> | 2012-03-27 17:44:52 +0000 |
|---|---|---|
| committer | Chad Rosier <mcrosier@apple.com> | 2012-03-27 17:44:52 +0000 |
| commit | d23a64cc164529739adaedb397e6279269f78efb (patch) | |
| tree | d86a97ed65b407a85a4b110330d364770de0be8d /test | |
| parent | 805543068eb7407d718b0359f54b342d7094d0ea (diff) | |
| download | llvm-d23a64cc164529739adaedb397e6279269f78efb.tar.gz llvm-d23a64cc164529739adaedb397e6279269f78efb.tar.bz2 llvm-d23a64cc164529739adaedb397e6279269f78efb.tar.xz | |
Reapply r153423; the original commit was fine. The failing test, distray, had
undefined behavior, which Rafael was kind enough to fix.
Original commit message for r153423:
Use the new range metadata in computeMaskedBits and add a new optimization to
instruction simplify that lets us remove an and when loding a boolean value.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153521 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstSimplify/pr12251.ll | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/pr12251.ll b/test/Transforms/InstSimplify/pr12251.ll new file mode 100644 index 0000000000..f180f9f1eb --- /dev/null +++ b/test/Transforms/InstSimplify/pr12251.ll @@ -0,0 +1,15 @@ +; RUN: opt < %s -instsimplify -S | FileCheck %s + +define zeroext i1 @_Z3fooPb(i8* nocapture %x) { +entry: + %a = load i8* %x, align 1, !range !0 + %b = and i8 %a, 1 + %tobool = icmp ne i8 %b, 0 + ret i1 %tobool +} + +; CHECK: %a = load i8* %x, align 1, !range !0 +; CHECK-NEXT: %tobool = icmp ne i8 %a, 0 +; CHECK-NEXT: ret i1 %tobool + +!0 = metadata !{i8 0, i8 2} |