[llvm-commits] CVS: llvm/test/Transforms/InstCombine/2007-03-19-BadTruncChangePR1261.ll

[Reid Spencer]

Changes in directory llvm/test/Transforms/InstCombine:

2007-03-19-BadTruncChangePR1261.ll added (r1.1)
---
Log message:

Add test case for PR1261: http://llvm.org/PR1261 , currently XFAILed.


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Diffs of the changes:  (+14 -0)

 2007-03-19-BadTruncChangePR1261.ll |   14 ++++++++++++++
 1 files changed, 14 insertions(+)


Index: llvm/test/Transforms/InstCombine/2007-03-19-BadTruncChangePR1261.ll
diff -c /dev/null llvm/test/Transforms/InstCombine/2007-03-19-BadTruncChangePR1261.ll:1.1
*** /dev/null	Mon Mar 19 18:28:26 2007
--- llvm/test/Transforms/InstCombine/2007-03-19-BadTruncChangePR1261.ll	Mon Mar 19 18:28:16 2007
***************
*** 0 ****
--- 1,14 ----
+ ; For PR1261. Before bit accurate type support in InstCombine, this would
+ ; turn the sext into a zext.
+ ; RUN: llvm-as %s -o - | opt -instcombine | llvm-dis &&
+ ; RUN: llvm-as %s -o - | opt -instcombine | llvm-dis | not grep zext
+ ; XFAIL: *
+ 
+ define i16 @test(i31 %zzz) {
+ entry:
+   %A = sext i31 %zzz to i32
+   %B = add i32 %A, 16384
+   %C = lshr i32 %B, 15
+   %D = trunc i32 %C to i16
+   ret i16 %D
+ }