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cd2ae14ce3
header is just the entry block to the loop, and it needn't be at the top of the loop in the code layout. Remove the code that suppressed loop alignment for outer loops, so that outer loops are aligned. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84158 91177308-0d34-0410-b5e6-96231b3b80d8
40 lines
1.1 KiB
LLVM
40 lines
1.1 KiB
LLVM
; RUN: llc < %s -mtriple=i386-apple-darwin | FileCheck %s
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; CodeGen should align the top of the loop, which differs from the loop
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; header in this case.
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; CHECK: jmp LBB1_2
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; CHECK: .align
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; CHECK: LBB1_1:
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@A = common global [100 x i32] zeroinitializer, align 32 ; <[100 x i32]*> [#uses=1]
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define i8* @test(i8* %Q, i32* %L) nounwind {
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entry:
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%tmp = tail call i32 (...)* @foo() nounwind ; <i32> [#uses=2]
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%tmp1 = inttoptr i32 %tmp to i8* ; <i8*> [#uses=1]
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br label %bb1
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bb: ; preds = %bb1, %bb1
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%indvar.next = add i32 %P.0.rec, 1 ; <i32> [#uses=1]
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br label %bb1
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bb1: ; preds = %bb, %entry
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%P.0.rec = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2]
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%P.0 = getelementptr i8* %tmp1, i32 %P.0.rec ; <i8*> [#uses=3]
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%tmp2 = load i8* %P.0, align 1 ; <i8> [#uses=1]
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switch i8 %tmp2, label %bb4 [
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i8 12, label %bb
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i8 42, label %bb
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]
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bb4: ; preds = %bb1
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%tmp3 = ptrtoint i8* %P.0 to i32 ; <i32> [#uses=1]
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%tmp4 = sub i32 %tmp3, %tmp ; <i32> [#uses=1]
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%tmp5 = getelementptr [100 x i32]* @A, i32 0, i32 %tmp4 ; <i32*> [#uses=1]
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store i32 4, i32* %tmp5, align 4
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ret i8* %P.0
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}
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declare i32 @foo(...)
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