1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 target datalayout = "e-m:e-i64:64-n32:64"
3 target triple = "powerpc64le-unknown-linux-gnu"
4 ; This file mainly tests the case that the two input registers of the ISEL instruction are the same register.
5 ; The foldable ISEL in this test case is introduced at register coalescing stage.
7 ; Before that stage we have:
8 ; %vreg18<def> = ISEL8 %vreg5, %vreg2, %vreg15<undef>;
10 ; At register coalescing stage, the register coalescer figures out it could remove the copy
11 ; from %vreg2 to %vreg5, put the original value %X3 into %vreg5 directly
12 ; erased: 336r %vreg5<def> = COPY %vreg2
13 ; updated: 288B %vreg5<def> = COPY %X3;
16 ; updated: 416B %vreg18<def> = ISEL8 %vreg5, %vreg5, %vreg15<undef>;
18 ; RUN: llc -verify-machineinstrs -O2 -ppc-asm-full-reg-names -mcpu=pwr7 -ppc-gen-isel=true < %s | FileCheck %s --check-prefix=CHECK-GEN-ISEL-TRUE
19 ; RUN: llc -verify-machineinstrs -O2 -ppc-asm-full-reg-names -mcpu=pwr7 -ppc-gen-isel=false < %s | FileCheck %s --implicit-check-not isel
20 %"struct.pov::ot_block_struct" = type { %"struct.pov::ot_block_struct"*, [3 x double], [3 x double], float, float, float, float, float, float, float, float, float, [3 x float], float, float, [3 x double], i16 }
21 %"struct.pov::ot_node_struct" = type { %"struct.pov::ot_id_struct", %"struct.pov::ot_block_struct"*, [8 x %"struct.pov::ot_node_struct"*] }
22 %"struct.pov::ot_id_struct" = type { i32, i32, i32, i32 }
24 define void @_ZN3pov6ot_insEPPNS_14ot_node_structEPNS_15ot_block_structEPNS_12ot_id_structE(%"struct.pov::ot_block_struct"* %new_block) {
25 ; CHECK-GEN-ISEL-TRUE-LABEL: _ZN3pov6ot_insEPPNS_14ot_node_structEPNS_15ot_block_structEPNS_12ot_id_structE:
26 ; CHECK-GEN-ISEL-TRUE: # %bb.0: # %entry
27 ; CHECK-GEN-ISEL-TRUE-NEXT: mflr r0
28 ; CHECK-GEN-ISEL-TRUE-NEXT: .cfi_def_cfa_offset 64
29 ; CHECK-GEN-ISEL-TRUE-NEXT: .cfi_offset lr, 16
30 ; CHECK-GEN-ISEL-TRUE-NEXT: .cfi_offset r29, -24
31 ; CHECK-GEN-ISEL-TRUE-NEXT: .cfi_offset r30, -16
32 ; CHECK-GEN-ISEL-TRUE-NEXT: std r29, -24(r1) # 8-byte Folded Spill
33 ; CHECK-GEN-ISEL-TRUE-NEXT: std r30, -16(r1) # 8-byte Folded Spill
34 ; CHECK-GEN-ISEL-TRUE-NEXT: stdu r1, -64(r1)
35 ; CHECK-GEN-ISEL-TRUE-NEXT: mr r30, r3
36 ; CHECK-GEN-ISEL-TRUE-NEXT: # implicit-def: $x3
37 ; CHECK-GEN-ISEL-TRUE-NEXT: # implicit-def: $r29
38 ; CHECK-GEN-ISEL-TRUE-NEXT: std r0, 80(r1)
39 ; CHECK-GEN-ISEL-TRUE-NEXT: b .LBB0_2
40 ; CHECK-GEN-ISEL-TRUE-NEXT: .p2align 4
41 ; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_1: # %cond.false21.i156
42 ; CHECK-GEN-ISEL-TRUE-NEXT: #
43 ; CHECK-GEN-ISEL-TRUE-NEXT: addi r4, r29, 1
44 ; CHECK-GEN-ISEL-TRUE-NEXT: srawi r4, r4, 1
45 ; CHECK-GEN-ISEL-TRUE-NEXT: addze r29, r4
46 ; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_2: # %while.cond11
47 ; CHECK-GEN-ISEL-TRUE-NEXT: #
48 ; CHECK-GEN-ISEL-TRUE-NEXT: lwz r4, 0(r3)
49 ; CHECK-GEN-ISEL-TRUE-NEXT: cmplwi r4, 0
50 ; CHECK-GEN-ISEL-TRUE-NEXT: beq cr0, .LBB0_5
51 ; CHECK-GEN-ISEL-TRUE-NEXT: # %bb.3: # %while.body21
52 ; CHECK-GEN-ISEL-TRUE-NEXT: #
53 ; CHECK-GEN-ISEL-TRUE-NEXT: bl ZN3pov10pov_callocEmmPKciS1_pov
54 ; CHECK-GEN-ISEL-TRUE-NEXT: nop
55 ; CHECK-GEN-ISEL-TRUE-NEXT: std r3, 0(r3)
56 ; CHECK-GEN-ISEL-TRUE-NEXT: bc 12, 4*cr5+lt, .LBB0_1
57 ; CHECK-GEN-ISEL-TRUE-NEXT: # %bb.4: # %cond.true18.i153
58 ; CHECK-GEN-ISEL-TRUE-NEXT: #
59 ; CHECK-GEN-ISEL-TRUE-NEXT: srwi r29, r29, 1
60 ; CHECK-GEN-ISEL-TRUE-NEXT: b .LBB0_2
61 ; CHECK-GEN-ISEL-TRUE-NEXT: .LBB0_5: # %lor.rhs
62 ; CHECK-GEN-ISEL-TRUE-NEXT: std r30, 16(r3)
63 ; CHECK-GEN-ISEL-TRUE-NEXT: addi r1, r1, 64
64 ; CHECK-GEN-ISEL-TRUE-NEXT: ld r0, 16(r1)
65 ; CHECK-GEN-ISEL-TRUE-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
66 ; CHECK-GEN-ISEL-TRUE-NEXT: ld r29, -24(r1) # 8-byte Folded Reload
67 ; CHECK-GEN-ISEL-TRUE-NEXT: mtlr r0
68 ; CHECK-GEN-ISEL-TRUE-NEXT: blr
70 ; CHECK-LABEL: _ZN3pov6ot_insEPPNS_14ot_node_structEPNS_15ot_block_structEPNS_12ot_id_structE:
71 ; CHECK: # %bb.0: # %entry
73 ; CHECK-NEXT: .cfi_def_cfa_offset 64
74 ; CHECK-NEXT: .cfi_offset lr, 16
75 ; CHECK-NEXT: .cfi_offset r29, -24
76 ; CHECK-NEXT: .cfi_offset r30, -16
77 ; CHECK-NEXT: std r29, -24(r1) # 8-byte Folded Spill
78 ; CHECK-NEXT: std r30, -16(r1) # 8-byte Folded Spill
79 ; CHECK-NEXT: stdu r1, -64(r1)
80 ; CHECK-NEXT: mr r30, r3
81 ; CHECK-NEXT: # implicit-def: $x3
82 ; CHECK-NEXT: # implicit-def: $r29
83 ; CHECK-NEXT: std r0, 80(r1)
84 ; CHECK-NEXT: b .LBB0_2
85 ; CHECK-NEXT: .p2align 4
86 ; CHECK-NEXT: .LBB0_1: # %cond.false21.i156
88 ; CHECK-NEXT: addi r4, r29, 1
89 ; CHECK-NEXT: srawi r4, r4, 1
90 ; CHECK-NEXT: addze r29, r4
91 ; CHECK-NEXT: .LBB0_2: # %while.cond11
93 ; CHECK-NEXT: lwz r4, 0(r3)
94 ; CHECK-NEXT: cmplwi r4, 0
95 ; CHECK-NEXT: beq cr0, .LBB0_5
96 ; CHECK-NEXT: # %bb.3: # %while.body21
98 ; CHECK-NEXT: bl ZN3pov10pov_callocEmmPKciS1_pov
100 ; CHECK-NEXT: std r3, 0(r3)
101 ; CHECK-NEXT: bc 12, 4*cr5+lt, .LBB0_1
102 ; CHECK-NEXT: # %bb.4: # %cond.true18.i153
104 ; CHECK-NEXT: srwi r29, r29, 1
105 ; CHECK-NEXT: b .LBB0_2
106 ; CHECK-NEXT: .LBB0_5: # %lor.rhs
107 ; CHECK-NEXT: std r30, 16(r3)
108 ; CHECK-NEXT: addi r1, r1, 64
109 ; CHECK-NEXT: ld r0, 16(r1)
110 ; CHECK-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
111 ; CHECK-NEXT: ld r29, -24(r1) # 8-byte Folded Reload
112 ; CHECK-NEXT: mtlr r0
115 br label %while.cond11
118 %this_node.0250 = phi %"struct.pov::ot_node_struct"* [ undef, %entry ], [ %1, %cond.false21.i156 ], [ %1, %cond.true18.i153 ]
119 %temp_id.sroa.21.1 = phi i32 [ undef, %entry ], [ %shr2039.i152, %cond.true18.i153 ], [ %div24.i155, %cond.false21.i156 ]
120 %0 = load i32, i32* undef, align 4
121 %cmp17 = icmp eq i32 0, %0
122 br i1 %cmp17, label %lor.rhs, label %while.body21
125 %Values = getelementptr inbounds %"struct.pov::ot_node_struct", %"struct.pov::ot_node_struct"* %this_node.0250, i64 0, i32 1
126 store %"struct.pov::ot_block_struct"* %new_block, %"struct.pov::ot_block_struct"** %Values, align 8
130 %call.i84 = tail call i8* @ZN3pov10pov_callocEmmPKciS1_pov()
131 store i8* %call.i84, i8** undef, align 8
132 %1 = bitcast i8* %call.i84 to %"struct.pov::ot_node_struct"*
133 br i1 undef, label %cond.true18.i153, label %cond.false21.i156
136 %shr2039.i152 = lshr i32 %temp_id.sroa.21.1, 1
137 br label %while.cond11
140 %add23.i154 = add nsw i32 %temp_id.sroa.21.1, 1
141 %div24.i155 = sdiv i32 %add23.i154, 2
142 br label %while.cond11
145 declare i8* @ZN3pov10pov_callocEmmPKciS1_pov()