43 lines
1.8 KiB
LLVM
43 lines
1.8 KiB
LLVM
; RUN: llc < %s -mtriple=arm-linux-gnueabi
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; PR4528
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; Inline asm is allowed to contain operands "=&r", "0".
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%struct.device_dma_parameters = type { i32, i32 }
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%struct.iovec = type { i8*, i32 }
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define i32 @generic_segment_checks(%struct.iovec* nocapture %iov, i32* nocapture %nr_segs, i32* nocapture %count, i32 %access_flags) nounwind optsize {
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entry:
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br label %bb8
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bb: ; preds = %bb8
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br i1 undef, label %bb10, label %bb2
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bb2: ; preds = %bb
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%asmtmp = tail call %struct.device_dma_parameters asm "adds $1, $2, $3; sbcccs $1, $1, $0; movcc $0, #0", "=&r,=&r,r,Ir,0,~{cc}"(i8* undef, i32 undef, i32 0) nounwind; <%struct.device_dma_parameters> [#uses=1]
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%asmresult = extractvalue %struct.device_dma_parameters %asmtmp, 0; <i32> [#uses=1]
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%0 = icmp eq i32 %asmresult, 0 ; <i1> [#uses=1]
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br i1 %0, label %bb7, label %bb4
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bb4: ; preds = %bb2
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br i1 undef, label %bb10, label %bb9
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bb7: ; preds = %bb2
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%1 = add i32 %2, 1 ; <i32> [#uses=1]
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br label %bb8
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bb8: ; preds = %bb7, %entry
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%2 = phi i32 [ 0, %entry ], [ %1, %bb7 ] ; <i32> [#uses=3]
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%scevgep22 = getelementptr %struct.iovec* %iov, i32 %2, i32 0; <i8**> [#uses=0]
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%3 = load i32* %nr_segs, align 4 ; <i32> [#uses=1]
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%4 = icmp ult i32 %2, %3 ; <i1> [#uses=1]
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br i1 %4, label %bb, label %bb9
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bb9: ; preds = %bb8, %bb4
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store i32 undef, i32* %count, align 4
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ret i32 0
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bb10: ; preds = %bb4, %bb
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ret i32 0
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}
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