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TheRock/compiler/amd-llvm/llvm/test/CodeGen/Hexagon/livephysregs-lane-masks2.mir
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

56 lines
1.4 KiB
YAML

# RUN: llc -mtriple=hexagon -verify-machineinstrs -run-pass branch-folder -o - %s | FileCheck %s
# CHECK-LABEL: name: fred
--- |
define void @fred() { ret void }
...
---
name: fred
tracksRegLiveness: true
body: |
bb.0:
liveins: $p0:0x1, $p2, $r0, $r18, $r19
successors: %bb.1, %bb.2
J2_jumpt killed $p2, %bb.1, implicit-def $pc
J2_jump %bb.2, implicit-def $pc
bb.1:
liveins: $p0:0x1, $r0, $r19
successors: %bb.3
$r2 = A2_tfrsi 4
$r1 = COPY $r19
$r0 = S2_asl_r_r killed $r0, killed $r2
$r0 = A2_asrh killed $r0
J2_jump %bb.3, implicit-def $pc
bb.2:
liveins: $p0:0x1, $r0, $r18
successors: %bb.3
$r2 = A2_tfrsi 5
$r1 = L2_loadrh_io $r18, 0
$r0 = S2_asl_r_r killed $r0, killed $r2
$r0 = A2_asrh killed $r0
bb.3:
; A live-in register without subregs, but with a lane mask that is not ~0
; is not recognized by LivePhysRegs. Branch folding exposes this problem
; (through tail merging).
;
; CHECK: bb.3:
; CHECK: liveins:{{.*}}$p0
; CHECK: $r0 = S2_asl_r_r killed $r0, killed $r2
; CHECK: $r0 = A2_asrh killed $r0
; CHECK: $r0 = C2_cmoveit killed $p0, 1
; CHECK: J2_jumpr $r31, implicit-def $pc, implicit $r0
;
liveins: $p0:0x1
$r0 = C2_cmoveit killed $p0, 1
J2_jumpr $r31, implicit-def $pc, implicit $r0
...