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Diffstat (limited to 'test/CodeGen/X86/loop-strength-reduce.ll')
| -rw-r--r-- | test/CodeGen/X86/loop-strength-reduce.ll | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGen/X86/loop-strength-reduce.ll b/test/CodeGen/X86/loop-strength-reduce.ll new file mode 100644 index 0000000..5cf8d0a --- /dev/null +++ b/test/CodeGen/X86/loop-strength-reduce.ll @@ -0,0 +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 +} |