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Viewing changes to test/CodeGen/X86/2006-05-08-CoalesceSubRegClass.ll

  • Committer: Package Import Robot
  • Author(s): Sylvestre Ledru
  • Date: 2012-03-29 19:09:51 UTC
  • Revision ID: package-import@ubuntu.com-20120329190951-aq83ivog4cg8bxun
Tags: upstream-3.1~svn153643
Import upstream version 3.1~svn153643

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test/CodeGen/X86/2006-05-08-CoalesceSubRegClass.ll
 
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; Coalescing from R32 to a subset R32_. Once another register coalescer bug is
 
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; fixed, the movb should go away as well.
 
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; RUN: llc < %s -march=x86 -relocation-model=static | \
 
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; RUN:   grep movl
 
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@B = external global i32                ; <i32*> [#uses=2]
 
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@C = external global i16*               ; <i16**> [#uses=2]
 
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define void @test(i32 %A) {
 
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        %A.upgrd.1 = trunc i32 %A to i8         ; <i8> [#uses=1]
 
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        %tmp2 = load i32* @B            ; <i32> [#uses=1]
 
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        %tmp3 = and i8 %A.upgrd.1, 16           ; <i8> [#uses=1]
 
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        %shift.upgrd.2 = zext i8 %tmp3 to i32           ; <i32> [#uses=1]
 
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        %tmp4 = shl i32 %tmp2, %shift.upgrd.2           ; <i32> [#uses=1]
 
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        store i32 %tmp4, i32* @B
 
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        %tmp6 = lshr i32 %A, 3          ; <i32> [#uses=1]
 
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        %tmp = load i16** @C            ; <i16*> [#uses=1]
 
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        %tmp8 = ptrtoint i16* %tmp to i32               ; <i32> [#uses=1]
 
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        %tmp9 = add i32 %tmp8, %tmp6            ; <i32> [#uses=1]
 
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        %tmp9.upgrd.3 = inttoptr i32 %tmp9 to i16*              ; <i16*> [#uses=1]
 
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        store i16* %tmp9.upgrd.3, i16** @C
 
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        ret void
 
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}
 
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