diff options
Diffstat (limited to 'test/Transforms/InstCombine/2011-02-14-InfLoop.ll')
-rw-r--r-- | test/Transforms/InstCombine/2011-02-14-InfLoop.ll | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/2011-02-14-InfLoop.ll b/test/Transforms/InstCombine/2011-02-14-InfLoop.ll new file mode 100644 index 000000000000..6d8a7ddbe46f --- /dev/null +++ b/test/Transforms/InstCombine/2011-02-14-InfLoop.ll @@ -0,0 +1,19 @@ +; This testcase causes an infinite loop in the instruction combiner, +; because it changes a pattern and the original pattern is almost +; identical to the newly-generated pattern. +; RUN: opt < %s -instcombine -disable-output + +;PR PR9216 + +target triple = "x86_64-unknown-linux-gnu" + +define <4 x float> @m_387(i8* noalias nocapture %A, i8* nocapture %B, <4 x i1> %C) nounwind { +entry: + %movcsext20 = sext <4 x i1> %C to <4 x i32> + %tmp2389 = xor <4 x i32> %movcsext20, <i32 -1, i32 -1, i32 -1, i32 -1> + %movcand25 = and <4 x i32> %tmp2389, <i32 undef, i32 undef, i32 undef, i32 -1> + %movcor26 = or <4 x i32> %movcand25, zeroinitializer + %L2 = bitcast <4 x i32> %movcor26 to <4 x float> + %L3 = shufflevector <4 x float> zeroinitializer, <4 x float> %L2, <4 x i32> <i32 0, i32 1, i32 2, i32 7> + ret <4 x float> %L3 +} |