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Add a simple pattern for matching 'bt'.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61426 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2008-12-25 05:34:37 +00:00
parent f1e9fd5676
commit e55484eb45
2 changed files with 66 additions and 10 deletions
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20
test/CodeGen/X86/bt.ll Normal file
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; RUN: llvm-as < %s | llc | grep btl
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin8"
define void @test2(i32 %x, i32 %n) nounwind {
entry:
%tmp29 = lshr i32 %x, %n ; <i32> [#uses=1]
%tmp3 = and i32 %tmp29, 1 ; <i32> [#uses=1]
%tmp4 = icmp eq i32 %tmp3, 0 ; <i1> [#uses=1]
br i1 %tmp4, label %bb, label %UnifiedReturnBlock
bb: ; preds = %entry
call void @foo()
ret void
UnifiedReturnBlock: ; preds = %entry
ret void
}
declare void @foo()