derek.holloway
7502bf64a4
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60 lines
2.2 KiB
LLVM
60 lines
2.2 KiB
LLVM
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a8 -O3 | FileCheck %s
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@.str = private constant [4 x i8] c"%d\0A\00", align 4 ; <ptr> [#uses=1]
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define internal fastcc i32 @Callee(i32 %i) nounwind {
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entry:
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; CHECK-LABEL: Callee:
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; CHECK: push
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; CHECK: mov r4, sp
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; CHECK: sub.w [[R12:r[0-9]+]], r4, #1000
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; CHECK: mov sp, [[R12]]
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%0 = icmp eq i32 %i, 0 ; <i1> [#uses=1]
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br i1 %0, label %bb2, label %bb
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bb: ; preds = %entry
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%1 = alloca [1000 x i8], align 4 ; <ptr> [#uses=1]
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%.sub = getelementptr inbounds [1000 x i8], ptr %1, i32 0, i32 0 ; <ptr> [#uses=2]
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%2 = call i32 (ptr, i32, i32, ptr, ...) @__sprintf_chk(ptr %.sub, i32 0, i32 1000, ptr @.str, i32 %i) nounwind ; <i32> [#uses=0]
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%3 = load i8, ptr %.sub, align 4 ; <i8> [#uses=1]
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%4 = sext i8 %3 to i32 ; <i32> [#uses=1]
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ret i32 %4
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bb2: ; preds = %entry
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; Must restore sp from fp here. Make sure not to leave sp in a temporarily invalid
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; state though. rdar://8465407
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; CHECK-NOT: mov sp, r7
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; CHECK: sub.w r4, r7, #8
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; CHECK: mov sp, r4
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; CHECK: pop
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ret i32 0
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}
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declare i32 @__sprintf_chk(ptr, i32, i32, ptr, ...) nounwind
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define i32 @main() nounwind {
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; CHECK-LABEL: main:
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bb.nph:
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br label %bb
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bb: ; preds = %bb, %bb.nph
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%0 = phi i32 [ 0, %bb.nph ], [ %3, %bb ] ; <i32> [#uses=2]
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%j.01 = phi i32 [ 0, %bb.nph ], [ %2, %bb ] ; <i32> [#uses=1]
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%1 = tail call fastcc i32 @Callee(i32 %0) nounwind ; <i32> [#uses=1]
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%2 = add nsw i32 %1, %j.01 ; <i32> [#uses=2]
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%3 = add nsw i32 %0, 1 ; <i32> [#uses=2]
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%exitcond = icmp eq i32 %3, 10000 ; <i1> [#uses=1]
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br i1 %exitcond, label %bb2, label %bb
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bb2: ; preds = %bb
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; No need to restore sp from fp here.
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; CHECK: printf
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; CHECK-NOT: mov sp, r7
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; CHECK-NOT: sub sp, #12
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; CHECK: pop
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%4 = tail call i32 (ptr, ...) @printf(ptr @.str, i32 %2) nounwind ; <i32> [#uses=0]
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ret i32 0
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}
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declare i32 @printf(ptr nocapture, ...) nounwind
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