avoid-loop-align.ll
1.14 KB
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; RUN: llc < %s -mtriple=i386-apple-darwin | FileCheck %s
; CodeGen should align the top of the loop, which differs from the loop
; header in this case.
; CHECK: jmp LBB0_2
; CHECK: .p2align
; CHECK: LBB0_1:
@A = common global [100 x i32] zeroinitializer, align 32 ; <[100 x i32]*> [#uses=1]
define i8* @test(i8* %Q, i32* %L) nounwind {
entry:
%tmp = tail call i32 (...) @foo() nounwind ; <i32> [#uses=2]
%tmp1 = inttoptr i32 %tmp to i8* ; <i8*> [#uses=1]
br label %bb1
bb: ; preds = %bb1, %bb1
%indvar.next = add i32 %P.0.rec, 1 ; <i32> [#uses=1]
br label %bb1
bb1: ; preds = %bb, %entry
%P.0.rec = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2]
%P.0 = getelementptr i8, i8* %tmp1, i32 %P.0.rec ; <i8*> [#uses=3]
%tmp2 = load i8, i8* %P.0, align 1 ; <i8> [#uses=1]
switch i8 %tmp2, label %bb4 [
i8 12, label %bb
i8 42, label %bb
]
bb4: ; preds = %bb1
%tmp3 = ptrtoint i8* %P.0 to i32 ; <i32> [#uses=1]
%tmp4 = sub i32 %tmp3, %tmp ; <i32> [#uses=1]
%tmp5 = getelementptr [100 x i32], [100 x i32]* @A, i32 0, i32 %tmp4 ; <i32*> [#uses=1]
store i32 4, i32* %tmp5, align 4
ret i8* %P.0
}
declare i32 @foo(...)