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author | Evan Cheng <evan.cheng@apple.com> | 2010-08-19 18:33:29 +0000 |
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committer | Evan Cheng <evan.cheng@apple.com> | 2010-08-19 18:33:29 +0000 |
commit | e5e7946018844978d0ac09fdb35998a53b43ad34 (patch) | |
tree | 78ba9b04c257e70c674d2f160f5cc2057e250dea /test | |
parent | 6715be20e23ac19efd20e16d43fdd1f608e3e415 (diff) | |
download | llvm-e5e7946018844978d0ac09fdb35998a53b43ad34.tar.gz llvm-e5e7946018844978d0ac09fdb35998a53b43ad34.tar.bz2 llvm-e5e7946018844978d0ac09fdb35998a53b43ad34.tar.xz |
It's possible to sink a def if its local uses are PHI's.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111537 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
-rw-r--r-- | test/CodeGen/X86/MachineSink-PHIUse.ll | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/test/CodeGen/X86/MachineSink-PHIUse.ll b/test/CodeGen/X86/MachineSink-PHIUse.ll new file mode 100644 index 0000000000..728e377360 --- /dev/null +++ b/test/CodeGen/X86/MachineSink-PHIUse.ll @@ -0,0 +1,39 @@ +; RUN: llc < %s -mtriple=x86_64-appel-darwin -stats |& grep {machine-sink} + +define fastcc void @t() nounwind ssp { +entry: + br i1 undef, label %bb, label %bb4 + +bb: ; preds = %entry + br i1 undef, label %return, label %bb3 + +bb3: ; preds = %bb + unreachable + +bb4: ; preds = %entry + br i1 undef, label %bb.nph, label %return + +bb.nph: ; preds = %bb4 + br label %bb5 + +bb5: ; preds = %bb9, %bb.nph + %indvar = phi i64 [ 0, %bb.nph ], [ %tmp12, %bb9 ] ; <i64> [#uses=1] + %tmp12 = add i64 %indvar, 1 ; <i64> [#uses=2] + %tmp13 = trunc i64 %tmp12 to i32 ; <i32> [#uses=0] + br i1 undef, label %bb9, label %bb6 + +bb6: ; preds = %bb5 + br i1 undef, label %bb9, label %bb7 + +bb7: ; preds = %bb6 + br i1 undef, label %bb9, label %bb8 + +bb8: ; preds = %bb7 + unreachable + +bb9: ; preds = %bb7, %bb6, %bb5 + br i1 undef, label %bb5, label %return + +return: ; preds = %bb9, %bb4, %bb + ret void +} |