1 # RUN: llc -mtriple=hexagon -run-pass hexagon-rdf-opt -verify-machineinstrs %s -o - | FileCheck %s
3 # Check that the L2_loadrd_io load from stack to $d6
4 # register, in bb.0, is not considered as dead code by RDF
5 # $d6 is used in A2_minp instruction in bb.1
8 #CHECK: renamable $d6 = L2_loadrd_io %stack.{{[0-9]+}}, 0
12 define dso_local i32 @fred(ptr %a) local_unnamed_addr {
19 tracksRegLiveness: true
21 - { id: 0, name: '', type: spill-slot, offset: 0, size: 8, alignment: 8,
22 stack-id: default, callee-saved-register: '', callee-saved-restored: true,
23 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
27 successors: %bb.1, %bb.2
28 liveins: $d3:0x0000000000000003, $r5, $r8
30 renamable $p0 = C2_cmpgtui renamable $r8, 1
31 renamable $r8 = A2_addi killed renamable $r8, -1
32 renamable $d6 = L2_loadrd_io %stack.0, 0 :: (load (s64) from %stack.0)
33 renamable $r12, renamable $r5 = L2_loadri_pi killed renamable $r5, 4 :: (load (s32) from %ir.a)
34 J2_loop0r %bb.1, killed renamable $r8, implicit-def $lc0, implicit-def $sa0, implicit-def $usr
35 J2_jumpf killed renamable $p0, %bb.2, implicit-def $pc
36 J2_jump %bb.1, implicit-def $pc
39 successors: %bb.2, %bb.1
40 liveins: $d3:0x0000000000000003, $d6:0x0000000000000003, $r5
42 renamable $d3 = A2_minp killed renamable $d3, renamable $d6
43 renamable $r12, renamable $r5 = L2_loadri_pi killed renamable $r5, 4 :: (load (s32) from %ir.a + 4)
44 ENDLOOP0 %bb.1, implicit-def $pc, implicit-def $lc0, implicit $sa0, implicit $lc0
45 J2_jump %bb.2, implicit-def $pc
48 liveins: $d3:0x0000000000000003, $d6:0x0000000000000003
50 renamable $r0 = A2_tfr renamable $r6
51 J2_jumpr $r31, implicit-def $pc, implicit $r0