1 ; RUN: llc < %s -verify-machineinstrs
4 ; This test has an inline asm with early-clobber arguments.
5 ; It is big enough that one of the early clobber registers is spilled.
7 ; All the spillers would get the live ranges wrong when spilling an early
8 ; clobber, allowing the undef register to be allocated to the same register as
11 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:64:128-a0:0:64-n32"
12 target triple = "armv7-eabi"
14 %0 = type { i32, i32 }
16 define void @foo(i32* %in) nounwind {
20 bb.i: ; preds = %bb.i, %entry
21 br i1 undef, label %bb10.preheader.i, label %bb.i
23 bb10.preheader.i: ; preds = %bb.i
26 bb10.i: ; preds = %bb10.i, %bb10.preheader.i
27 br i1 undef, label %bb27.i, label %bb10.i
29 bb27.i: ; preds = %bb10.i
32 bb28.i: ; preds = %bb28.i, %bb27.i
33 br i1 undef, label %presymmetry.exit, label %bb28.i
35 presymmetry.exit: ; preds = %bb28.i
36 %tmp175387 = or i32 undef, 12
37 %scevgep101.i = getelementptr i32, i32* %in, i32 undef
38 %tmp189401 = or i32 undef, 7
39 %scevgep97.i = getelementptr i32, i32* %in, i32 undef
40 %tmp198410 = or i32 undef, 1
41 %scevgep.i48 = getelementptr i32, i32* %in, i32 undef
42 %0 = load i32, i32* %scevgep.i48, align 4
43 %1 = add nsw i32 %0, 0
44 store i32 %1, i32* undef, align 4
45 %asmtmp.i.i33.i.i.i = tail call %0 asm "smull\09$0, $1, $2, $3", "=&r,=&r,%r,r,~{cc}"(i32 undef, i32 1518500250) nounwind
46 %asmresult1.i.i34.i.i.i = extractvalue %0 %asmtmp.i.i33.i.i.i, 1
47 %2 = shl i32 %asmresult1.i.i34.i.i.i, 1
48 %3 = load i32, i32* null, align 4
49 %4 = load i32, i32* undef, align 4
50 %5 = sub nsw i32 %3, %4
51 %6 = load i32, i32* undef, align 4
52 %7 = load i32, i32* null, align 4
53 %8 = sub nsw i32 %6, %7
54 %9 = load i32, i32* %scevgep97.i, align 4
55 %10 = load i32, i32* undef, align 4
56 %11 = sub nsw i32 %9, %10
57 %12 = load i32, i32* null, align 4
58 %13 = load i32, i32* %scevgep101.i, align 4
59 %14 = sub nsw i32 %12, %13
60 %15 = load i32, i32* %scevgep.i48, align 4
61 %16 = load i32, i32* null, align 4
62 %17 = add nsw i32 %16, %15
63 %18 = sub nsw i32 %15, %16
64 %19 = load i32, i32* undef, align 4
65 %20 = add nsw i32 %19, %2
66 %21 = sub nsw i32 %19, %2
67 %22 = add nsw i32 %14, %5
68 %23 = sub nsw i32 %5, %14
69 %24 = add nsw i32 %11, %8
70 %25 = sub nsw i32 %8, %11
71 %26 = add nsw i32 %21, %23
72 store i32 %26, i32* %scevgep.i48, align 4
73 %27 = sub nsw i32 %25, %18
74 store i32 %27, i32* null, align 4
75 %28 = sub nsw i32 %23, %21
76 store i32 %28, i32* undef, align 4
77 %29 = add nsw i32 %18, %25
78 store i32 %29, i32* undef, align 4
79 %30 = add nsw i32 %17, %22
80 store i32 %30, i32* %scevgep101.i, align 4
81 %31 = add nsw i32 %20, %24
82 store i32 %31, i32* null, align 4