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Cleanup and FileCheck-ize a test. 

llvm-svn: 147603
This commit is contained in:
Chandler Carruth 2012-01-05 11:05:47 +00:00
parent 29b0737452
commit 6bc151f5d4
1 changed files with 39 additions and 17 deletions
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56
llvm/test/CodeGen/X86/shift-folding.ll
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@ -1,27 +1,49 @@
; RUN: llc < %s -march=x86 | \
; RUN: grep {s\[ah\]\[rl\]l} | count 1
; RUN: llc < %s -march=x86 | FileCheck %s
define i32* @test1(i32* %P, i32 %X) nounwind {
%Y = lshr i32 %X, 2 ; <i32> [#uses=1]
%gep.upgrd.1 = zext i32 %Y to i64 ; <i64> [#uses=1]
%P2 = getelementptr i32* %P, i64 %gep.upgrd.1 ; <i32*> [#uses=1]
ret i32* %P2
define i32* @test1(i32* %P, i32 %X) {
; CHECK: test1:
; CHECK-NOT: shrl
; CHECK-NOT: shll
; CHECK: ret
entry:
%Y = lshr i32 %X, 2
%gep.upgrd.1 = zext i32 %Y to i64
%P2 = getelementptr i32* %P, i64 %gep.upgrd.1
ret i32* %P2
}
define i32* @test2(i32* %P, i32 %X) nounwind {
%Y = shl i32 %X, 2 ; <i32> [#uses=1]
%gep.upgrd.2 = zext i32 %Y to i64 ; <i64> [#uses=1]
%P2 = getelementptr i32* %P, i64 %gep.upgrd.2 ; <i32*> [#uses=1]
ret i32* %P2
define i32* @test2(i32* %P, i32 %X) {
; CHECK: test2:
; CHECK: shll $4
; CHECK-NOT: shll
; CHECK: ret
entry:
%Y = shl i32 %X, 2
%gep.upgrd.2 = zext i32 %Y to i64
%P2 = getelementptr i32* %P, i64 %gep.upgrd.2
ret i32* %P2
}
define i32* @test3(i32* %P, i32 %X) nounwind {
%Y = ashr i32 %X, 2 ; <i32> [#uses=1]
%P2 = getelementptr i32* %P, i32 %Y ; <i32*> [#uses=1]
ret i32* %P2
define i32* @test3(i32* %P, i32 %X) {
; CHECK: test3:
; CHECK-NOT: shrl
; CHECK-NOT: shll
; CHECK: ret
entry:
%Y = ashr i32 %X, 2
%P2 = getelementptr i32* %P, i32 %Y
ret i32* %P2
}
define fastcc i32 @test4(i32* %d) nounwind {
define fastcc i32 @test4(i32* %d) {
; CHECK: test4:
; CHECK-NOT: shrl
; CHECK: ret
entry:
%tmp4 = load i32* %d
%tmp512 = lshr i32 %tmp4, 24
ret i32 %tmp512