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