1 # RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -start-before=greedy %s -o - \
2 # RUN: -debug-only=regalloc 2>&1 | FileCheck %s
6 # Test that regalloc hints are passed for compare with zero cases that can be
7 # converted to load-and-test.
10 ; ModuleID = './tc.ll'
11 source_filename = "proof.c"
12 target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-v128:64-a:8:16-n32:64"
13 target triple = "s390x-ibm-linux"
15 @rootlosers = external dso_local local_unnamed_addr global [300 x i32], align 4
17 define dso_local void @proofnumberscan() local_unnamed_addr #0 {
19 br i1 undef, label %bb20.preheader, label %bb1.preheader
21 bb1.preheader: ; preds = %bb
24 bb20.preheader: ; preds = %bb
27 bb1: ; preds = %bb1.preheader, %bb15
28 %lsr.iv3 = phi ptr [ undef, %bb1.preheader ], [ %2, %bb15 ]
29 %lsr.iv1 = phi ptr [ @rootlosers, %bb1.preheader ], [ %1, %bb15 ]
30 %lsr.iv = phi i32 [ 0, %bb1.preheader ], [ %lsr.iv.next, %bb15 ]
31 %tmp2 = phi i32 [ %tmp18, %bb15 ], [ 0, %bb1.preheader ]
32 %tmp3 = phi i32 [ %tmp17, %bb15 ], [ 100000000, %bb1.preheader ]
33 %lsr.iv35 = bitcast ptr %lsr.iv3 to ptr
34 %tmp5 = load i32, ptr %lsr.iv35, align 4, !tbaa !1
35 %tmp6 = load i32, ptr undef, align 4, !tbaa !1
36 %tmp7 = icmp eq i32 %tmp6, 0
37 br i1 %tmp7, label %bb15, label %bb8
40 %0 = bitcast ptr %lsr.iv1 to ptr
41 %tmp10 = load i32, ptr %0, align 4, !tbaa !1
42 %tmp11 = icmp eq i32 %tmp10, 0
43 %tmp12 = select i1 %tmp11, i32 %tmp5, i32 %tmp3
44 %tmp14 = select i1 %tmp11, i32 %lsr.iv, i32 %tmp2
47 bb15: ; preds = %bb8, %bb1
48 %tmp16 = phi i32 [ 0, %bb1 ], [ %tmp6, %bb8 ]
49 %tmp17 = phi i32 [ %tmp3, %bb1 ], [ %tmp12, %bb8 ]
50 %tmp18 = phi i32 [ %tmp2, %bb1 ], [ %tmp14, %bb8 ]
51 %lsr.iv.next = add i32 %lsr.iv, 4
52 %scevgep = getelementptr [300 x i32], ptr %lsr.iv1, i64 0, i64 4
53 %1 = bitcast ptr %scevgep to ptr
54 %scevgep4 = getelementptr [512 x i32], ptr %lsr.iv3, i64 0, i64 4
55 %2 = bitcast ptr %scevgep4 to ptr
58 bb20: ; preds = %bb20, %bb20.preheader
62 attributes #0 = { "target-cpu"="z13" "use-soft-float"="false" }
66 !0 = !{!"clang version 9.0.0 (http://llvm.org/git/clang.git 29e2813a2ab7d5569860bb07892dfef7b5374d96) (http://llvm.org/git/llvm.git 546f779cb9d4ac2ce9c9b9522019f500abca9522)"}
68 !2 = !{!"int", !3, i64 0}
69 !3 = !{!"omnipotent char", !4, i64 0}
70 !4 = !{!"Simple C/C++ TBAA"}
74 # CHECK: ********** MACHINEINSTRS **********
76 # CHECK: [[VREG0:%[0-9]+]]:grx32bit = LMux
77 # CHECK: CHIMux [[VREG0]]:grx32bit, 0, implicit-def $cc
78 # CHECK: [[VREG1:%[0-9]+]]:grx32bit = LMux
79 # CHECK: CHIMux [[VREG1]]:grx32bit, 0, implicit-def $cc
80 # CHECK: selectOrSplit GRX32Bit:[[VREG0]]
81 # CHECK-NEXT: hints: $r0l $r1l $r2l $r3l $r4l $r5l $r14l $r13l $r12l $r11l $r10l $r9l $r8l $r7l $r6l
82 # CHECK-NEXT: assigning [[VREG0]] to $[[PREG0:r[0-9]+]]l
83 # CHECK: selectOrSplit GRX32Bit:[[VREG1]]
84 # CHECK-NEXT: hints: $r0l $r1l $r2l $r3l $r4l $r5l $r14l $r13l $r12l $r11l $r10l $r9l $r8l $r7l $r6l
85 # CHECK-NEXT: assigning [[VREG1]] to $[[PREG1:r[0-9]+]]l
86 # CHECK: lt %[[PREG0]]
87 # CHECK: lt %[[PREG1]]
92 tracksRegLiveness: true
94 - { id: 0, class: addr64bit }
95 - { id: 1, class: addr64bit }
96 - { id: 2, class: grx32bit }
97 - { id: 3, class: grx32bit }
98 - { id: 4, class: grx32bit }
99 - { id: 5, class: grx32bit }
100 - { id: 6, class: grx32bit }
101 - { id: 7, class: grx32bit }
102 - { id: 8, class: grx32bit }
103 - { id: 9, class: grx32bit }
104 - { id: 10, class: grx32bit }
105 - { id: 11, class: grx32bit }
106 - { id: 12, class: gr64bit }
107 - { id: 13, class: gr64bit }
108 - { id: 14, class: grx32bit }
109 - { id: 15, class: gr64bit }
110 - { id: 16, class: gr64bit }
111 - { id: 17, class: grx32bit }
112 - { id: 18, class: grx32bit }
113 - { id: 19, class: addr64bit }
114 - { id: 20, class: grx32bit }
115 - { id: 21, class: addr64bit }
116 - { id: 22, class: addr64bit }
117 - { id: 23, class: grx32bit }
118 - { id: 24, class: grx32bit }
119 - { id: 25, class: grx32bit }
120 - { id: 26, class: grx32bit }
121 - { id: 27, class: grx32bit }
124 successors: %bb.1, %bb.2
126 %23:grx32bit = LHIMux 0
127 CHIMux %23, 0, implicit-def $cc
128 BRC 14, 8, %bb.2, implicit killed $cc
134 %25:grx32bit = IIFMux 100000000
135 %22:addr64bit = LARL @rootlosers
136 %21:addr64bit = IMPLICIT_DEF
137 %24:grx32bit = LHIMux 0
141 successors: %bb.7(0x30000000), %bb.4(0x50000000)
143 %5:grx32bit = LMux %21, 0, $noreg :: (load (s32) from %ir.lsr.iv35, !tbaa !1)
144 %6:grx32bit = LMux undef %19:addr64bit, 0, $noreg :: (load (s32) from `ptr undef`, !tbaa !1)
145 CHIMux %6, 0, implicit-def $cc
146 BRC 14, 6, %bb.4, implicit killed $cc
152 %20:grx32bit = LMux %22, 0, $noreg :: (load (s32) from %ir.0, !tbaa !1)
153 CHIMux %20, 0, implicit-def $cc
154 %25:grx32bit = LOCRMux %25, %5, 14, 8, implicit $cc
155 %24:grx32bit = LOCRMux %24, %23, 14, 8, implicit killed $cc
158 %23:grx32bit = AHIMux %23, 4, implicit-def dead $cc
159 %22:addr64bit = LA %22, 16, $noreg
160 %21:addr64bit = LA %21, 16, $noreg