Mercurial > hg > CbC > CbC_llvm
comparison test/Transforms/InstCombine/2008-01-21-MulTrunc.ll @ 0:95c75e76d11b LLVM3.4
LLVM 3.4
| author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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| date | Thu, 12 Dec 2013 13:56:28 +0900 |
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| children |
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| -1:000000000000 | 0:95c75e76d11b |
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| 1 ; RUN: opt < %s -instcombine -S | FileCheck %s | |
| 2 | |
| 3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128" | |
| 4 | |
| 5 define i16 @test1(i16 %a) { | |
| 6 %tmp = zext i16 %a to i32 ; <i32> [#uses=2] | |
| 7 %tmp21 = lshr i32 %tmp, 8 ; <i32> [#uses=1] | |
| 8 ; CHECK: %tmp21 = lshr i16 %a, 8 | |
| 9 %tmp5 = mul i32 %tmp, 5 ; <i32> [#uses=1] | |
| 10 ; CHECK: %tmp5 = mul i16 %a, 5 | |
| 11 %tmp.upgrd.32 = or i32 %tmp21, %tmp5 ; <i32> [#uses=1] | |
| 12 ; CHECK: %tmp.upgrd.32 = or i16 %tmp21, %tmp5 | |
| 13 %tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16 ; <i16> [#uses=1] | |
| 14 ret i16 %tmp.upgrd.3 | |
| 15 ; CHECK: ret i16 %tmp.upgrd.32 | |
| 16 } | |
| 17 |