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Add test case for PR1261, currently XFAILed.

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llvm-svn: 35192
This commit is contained in:
Reid Spencer 2007-03-19 23:28:16 +00:00
parent 37a5818ca9
commit 86f1c2f59d
1 changed files with 14 additions and 0 deletions
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test/Transforms/InstCombine/2007-03-19-BadTruncChangePR1261.ll Normal file
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; 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
}