[llvm-commits] CVS: llvm/test/Regression/CodeGen/X86/loop-strength-reduce.ll

[Evan Cheng]

Changes in directory llvm/test/Regression/CodeGen/X86:

loop-strength-reduce.ll added (r1.1)
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Log message:

Add a lsr common loop invariant hoisting test case

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Diffs of the changes:  (+28 -0)

 loop-strength-reduce.ll |   28 ++++++++++++++++++++++++++++
 1 files changed, 28 insertions(+)


Index: llvm/test/Regression/CodeGen/X86/loop-strength-reduce.ll
diff -c /dev/null llvm/test/Regression/CodeGen/X86/loop-strength-reduce.ll:1.1
*** /dev/null	Fri Mar 17 13:46:04 2006
--- llvm/test/Regression/CodeGen/X86/loop-strength-reduce.ll	Fri Mar 17 13:45:54 2006
***************
*** 0 ****
--- 1,28 ----
+ ; RUN: llvm-as < %s | llc -march=x86 -enable-x86-lsr | grep 'A(' | wc -l | grep 1
+ ;
+ ; Make sure the common loop invariant _A(reg) is hoisted up to preheader.
+ 
+ %A = internal global [16 x [16 x int]] zeroinitializer, align 32
+ 
+ void %test(int %row, int %N) {
+ entry:
+ 	%N = cast int %N to uint
+ 	%tmp5 = setgt int %N, 0
+ 	br bool %tmp5, label %cond_true, label %return
+ 
+ cond_true:
+ 	%indvar = phi uint [ 0, %entry ], [ %indvar.next, %cond_true ]
+ 	%i.0.0 = cast uint %indvar to int
+ 	%tmp2 = add int %i.0.0, 1
+ 	%tmp = getelementptr [16 x [16 x int]]* %A, int 0, int %row, int %tmp2
+ 	store int 4, int* %tmp
+ 	%tmp5 = add int %i.0.0, 2
+ 	%tmp7 = getelementptr [16 x [16 x int]]* %A, int 0, int %row, int %tmp5
+ 	store int 5, int* %tmp7
+ 	%indvar.next = add uint %indvar, 1
+ 	%exitcond = seteq uint %indvar.next, %N
+ 	br bool %exitcond, label %return, label %cond_true
+ 
+ return:
+ 	ret void
+ }