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FileCheck-ize a test, make it more specific to directly test the shift

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removal desired.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148213 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth 2012-01-15 09:32:57 +00:00
parent 4aab4ab340
commit 482e4a8711
1 changed files with 14 additions and 10 deletions
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24
test/CodeGen/X86/shift-combine.ll
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@ -1,15 +1,19 @@
; RUN: llc < %s | not grep shrl
; RUN: llc -march=x86 < %s | FileCheck %s
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 = "i686-apple-darwin8"
@array = weak global [4 x i32] zeroinitializer ; <[4 x i32]*> [#uses=1]
@array = weak global [4 x i32] zeroinitializer
define i32 @test_lshr_and(i32 %x) {
; CHECK: test_lshr_and:
; CHECK-NOT: shrl
; CHECK: andl $12,
; CHECK: movl array(%{{...}}),
; CHECK: ret
define i32 @foo(i32 %x) {
entry:
%tmp2 = lshr i32 %x, 2 ; <i32> [#uses=1]
%tmp3 = and i32 %tmp2, 3 ; <i32> [#uses=1]
%tmp4 = getelementptr [4 x i32]* @array, i32 0, i32 %tmp3 ; <i32*> [#uses=1]
%tmp5 = load i32* %tmp4, align 4 ; <i32> [#uses=1]
ret i32 %tmp5
%tmp2 = lshr i32 %x, 2
%tmp3 = and i32 %tmp2, 3
%tmp4 = getelementptr [4 x i32]* @array, i32 0, i32 %tmp3
%tmp5 = load i32* %tmp4, align 4
ret i32 %tmp5
}