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| author | Chris Lattner <sabre@nondot.org> | 2008-06-18 04:00:49 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-06-18 04:00:49 +0000 |
| commit | 4200c2066782bdd2c6def18cffeaad48210bf05a (patch) | |
| tree | 5fa23cda7a9fc5a7b5c5aa8de0db1efef2075866 /test | |
| parent | 651e1440ecdc0ae3e04c44b48aad501c5109563a (diff) | |
| download | external_llvm-4200c2066782bdd2c6def18cffeaad48210bf05a.zip external_llvm-4200c2066782bdd2c6def18cffeaad48210bf05a.tar.gz external_llvm-4200c2066782bdd2c6def18cffeaad48210bf05a.tar.bz2 | |
make truncate/sext elimination capable of changing phi's. This
implements rdar://6013816 and the testcase in Transforms/InstCombine/sext-misc.ll.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52440 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/Transforms/InstCombine/sext-misc.ll | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/test/Transforms/InstCombine/sext-misc.ll b/test/Transforms/InstCombine/sext-misc.ll index 076f595..6985002 100644 --- a/test/Transforms/InstCombine/sext-misc.ll +++ b/test/Transforms/InstCombine/sext-misc.ll @@ -1,6 +1,4 @@ ; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep sext -; RUN: llvm-as < %s | llc -march=x86-64 | not grep movslq -; RUN: llvm-as < %s | llc -march=x86 | not grep sar declare i32 @llvm.ctpop.i32(i32) declare i32 @llvm.ctlz.i32(i32) @@ -50,3 +48,18 @@ define i32 @woo(i8 %a, i32 %f, i1 %p, i32* %z) { %n = sext i16 %s to i32 ret i32 %n } + +; rdar://6013816 +define i16 @test(i16 %t, i1 %cond) nounwind { +entry: + br i1 %cond, label %T, label %F +T: + %t2 = sext i16 %t to i32 + br label %F + +F: + %V = phi i32 [%t2, %T], [42, %entry] + %W = trunc i32 %V to i16 + ret i16 %W +} + |