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5d787bb93e
types. These tests mimic the integer test cases in the normal InstCombine test suite but use "strange" integer bit widths. Most tests written by Zhou Sheng, a few by me. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35284 91177308-0d34-0410-b5e6-96231b3b80d8
22 lines
991 B
LLVM
22 lines
991 B
LLVM
; Tests to make sure elimination of casts is working correctly
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; RUN: llvm-as < %s | opt -instcombine -disable-output &&
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; RUN: llvm-as < %s | opt -instcombine | llvm-dis | notcast
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define i17 @test1(i17 %a) {
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%tmp = zext i17 %a to i37 ; <i37> [#uses=2]
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%tmp21 = lshr i37 %tmp, 8 ; <i37> [#uses=1]
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%tmp5 = shl i37 %tmp, 8 ; <i37> [#uses=1]
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%tmp.upgrd.32 = or i37 %tmp21, %tmp5 ; <i37> [#uses=1]
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%tmp.upgrd.3 = trunc i37 %tmp.upgrd.32 to i17 ; <i17> [#uses=1]
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ret i17 %tmp.upgrd.3
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}
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define i167 @test2(i167 %a) {
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%tmp = zext i167 %a to i577 ; <i577> [#uses=2]
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%tmp21 = lshr i577 %tmp, 9 ; <i577> [#uses=1]
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%tmp5 = shl i577 %tmp, 8 ; <i577> [#uses=1]
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%tmp.upgrd.32 = or i577 %tmp21, %tmp5 ; <i577> [#uses=1]
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%tmp.upgrd.3 = trunc i577 %tmp.upgrd.32 to i167 ; <i167> [#uses=1]
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ret i167 %tmp.upgrd.3
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}
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