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|
# RUN: llc -mtriple=s390x-linux-gnu -mcpu=z13 -start-before=greedy %s -o - \
# RUN: | FileCheck %s
#
# Test that regalloc manages (via regalloc hints) to avoid a LOCRMux jump
# sequence expansion.
--- |
declare ptr @foo(ptr, i32 signext, i32 signext) local_unnamed_addr
define ptr @fun(ptr returned) {
br label %2
; <label>:2: ; preds = %6, %1
%3 = zext i16 undef to i32
switch i32 %3, label %4 [
i32 15, label %6
i32 125, label %5
]
; <label>:4: ; preds = %2
br label %6
; <label>:5: ; preds = %2
br label %6
; <label>:6: ; preds = %5, %4, %2
%7 = phi i32 [ 4, %2 ], [ undef, %4 ], [ 10, %5 ]
%8 = call ptr @foo(ptr undef, i32 signext undef, i32 signext %7)
br label %2
}
...
# CHECK: locr
# CHECK-NOT: risblg
---
name: fun
alignment: 4
tracksRegLiveness: true
registers:
- { id: 0, class: gr32bit }
- { id: 1, class: gr64bit }
- { id: 2, class: grx32bit }
- { id: 3, class: grx32bit }
- { id: 4, class: grx32bit }
- { id: 5, class: grx32bit }
- { id: 6, class: grx32bit }
- { id: 7, class: gr64bit }
- { id: 8, class: gr64bit }
- { id: 9, class: gr64bit }
- { id: 10, class: gr64bit }
- { id: 11, class: gr32bit }
frameInfo:
adjustsStack: true
hasCalls: true
body: |
bb.0 (%ir-block.1):
%3 = LHIMux 0
%2 = LHIMux 4
%5 = LHIMux 10
bb.1 (%ir-block.2):
CHIMux %3, 0, implicit-def $cc
%0 = LOCRMux undef %0, %5, 14, 6, implicit $cc
%0 = LOCRMux %0, %2, 14, 6, implicit killed $cc
%7 = LGFR %0
$r3d = LGHI 0
$r4d = COPY %7
CallBRASL @foo, undef $r2d, killed $r3d, killed $r4d, csr_systemz_elf, implicit-def dead $r14d, implicit-def dead $cc, implicit-def dead $r2d
J %bb.1
...
|
