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|
# RUN: llc -O0 -run-pass=aarch64-prelegalizer-combiner -global-isel %s -o - | FileCheck %s
--- |
target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
target triple = "aarch64--"
define void @multiple_copies(i8* %addr) {
entry:
br i1 0, label %if, label %else
if:
br label %exit
else:
br label %exit
exit:
ret void
}
define void @sink_to_phi_trivially_dominating(i8* %addr) {
entry:
br i1 0, label %if, label %exit
if:
br label %exit
exit:
ret void
}
define void @sink_to_phi_nondominating(i8* %addr) {
entry:
br i1 0, label %if, label %else
if:
br label %exit
else:
br label %exit
exit:
ret void
}
...
---
name: multiple_copies
# CHECK-LABEL: name: multiple_copies
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x0, $w1
successors: %bb.1(0x40000000), %bb.2(0x40000000); %bb.1(50.00%), %bb.2(50.00%)
; CHECK: [[T0:%[0-9]+]]:_(s32) = G_SEXTLOAD
%0:_(p0) = COPY $x0
%1:_(s32) = COPY $w1
%2:_(s8) = G_LOAD %0 :: (load 1 from %ir.addr)
%3:_(s32) = G_SEXT %2
%4:_(s32) = G_CONSTANT i32 1
%5:_(s1) = G_ICMP intpred(ne), %1:_(s32), %4:_
G_BRCOND %5:_(s1), %bb.1
G_BR %bb.2.else
bb.1.if:
; CHECK: bb.1.if:
successors: %bb.3(0x80000000)
%10:_(s8) = G_CONSTANT i8 1
; CHECK: [[T1:%[0-9]+]]:_(s8) = G_TRUNC [[T0]](s32)
%6:_(s8) = G_ADD %2, %10
; CHECK: [[T2:%[0-9]+]]:_(s8) = G_ADD [[T1]], {{.*}}
G_BR %bb.3.exit
bb.2.else:
; CHECK: bb.2.else:
successors: %bb.3(0x80000000)
%11:_(s8) = G_CONSTANT i8 1
; CHECK: [[T3:%[0-9]+]]:_(s8) = G_TRUNC [[T0]](s32)
%7:_(s8) = G_SUB %2, %11
; CHECK: [[T4:%[0-9]+]]:_(s8) = G_SUB [[T3]], {{.*}}
G_BR %bb.3.exit
bb.3.exit:
; CHECK: bb.3.exit:
%8:_(s8) = G_PHI %6:_(s8), %bb.1, %7:_(s8), %bb.2
; CHECK: [[T5:%[0-9]+]]:_(s8) = G_PHI [[T2]](s8), %bb.1, [[T4]](s8)
%9:_(s32) = G_ZEXT %8
; CHECK: [[T6:%[0-9]+]]:_(s32) = G_ZEXT [[T5]](s8)
; CHECK: $w0 = COPY [[T0]](s32)
; CHECK: $w1 = COPY [[T6]](s32)
$w0 = COPY %3
$w1 = COPY %9
...
---
name: sink_to_phi_trivially_dominating
# CHECK-LABEL: name: sink_to_phi_trivially_dominating
# This test currently tests that we don't sink if we would sink to a phi. This
# is needed to avoid inserting into the middle of the leading G_PHI instructions
# of a BB
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x0, $w1
successors: %bb.1(0x40000000), %bb.2(0x40000000); %bb.1(50.00%), %bb.2(50.00%)
; CHECK: [[T0:%[0-9]+]]:_(s32) = G_SEXTLOAD
%0:_(p0) = COPY $x0
%1:_(s32) = COPY $w1
%2:_(s8) = G_LOAD %0 :: (load 1 from %ir.addr)
; CHECK: [[T4:%[0-9]+]]:_(s8) = G_TRUNC [[T0]](s32)
%3:_(s32) = G_SEXT %2
%4:_(s32) = G_CONSTANT i32 1
%5:_(s1) = G_ICMP intpred(ne), %1:_(s32), %4:_
G_BRCOND %5:_(s1), %bb.1
G_BR %bb.2.exit
bb.1.if:
; CHECK: bb.1.if:
successors: %bb.2(0x80000000)
%10:_(s8) = G_CONSTANT i8 1
; CHECK: [[T1:%[0-9]+]]:_(s8) = G_TRUNC [[T0]](s32)
%6:_(s8) = G_ADD %2, %10
; CHECK: [[T2:%[0-9]+]]:_(s8) = G_ADD [[T1]], {{.*}}
G_BR %bb.2.exit
bb.2.exit:
; CHECK: bb.2.exit:
%8:_(s8) = G_PHI %6:_(s8), %bb.1, %2:_(s8), %bb.0
; CHECK: [[T5:%[0-9]+]]:_(s8) = G_PHI [[T2]](s8), %bb.1, [[T4]](s8)
%9:_(s32) = G_ZEXT %8
; CHECK: [[T6:%[0-9]+]]:_(s32) = G_ZEXT [[T5]](s8)
; CHECK: $w0 = COPY [[T0]](s32)
; CHECK: $w1 = COPY [[T6]](s32)
$w0 = COPY %3
$w1 = COPY %9
...
---
name: sink_to_phi_nondominating
# CHECK-LABEL: name: sink_to_phi_nondominating
# This test currently tests that we don't sink if we would sink to a phi. This
# is needed to avoid inserting into the middle of the leading G_PHI instructions
# of a BB
tracksRegLiveness: true
body: |
bb.0.entry:
liveins: $x0, $w1
successors: %bb.1(0x40000000), %bb.2(0x40000000); %bb.1(50.00%), %bb.2(50.00%)
; CHECK: [[T0:%[0-9]+]]:_(s32) = G_SEXTLOAD
%0:_(p0) = COPY $x0
%1:_(s32) = COPY $w1
%2:_(s8) = G_LOAD %0 :: (load 1 from %ir.addr)
%3:_(s32) = G_SEXT %2
%4:_(s32) = G_CONSTANT i32 1
%5:_(s1) = G_ICMP intpred(ne), %1:_(s32), %4:_
G_BRCOND %5:_(s1), %bb.1
G_BR %bb.2.else
bb.1.if:
; CHECK: bb.1.if:
successors: %bb.3(0x80000000)
%10:_(s8) = G_CONSTANT i8 1
; CHECK: [[T1:%[0-9]+]]:_(s8) = G_TRUNC [[T0]](s32)
%6:_(s8) = G_ADD %2, %10
; CHECK: [[T2:%[0-9]+]]:_(s8) = G_ADD [[T1]], {{.*}}
G_BR %bb.3.exit
bb.2.else:
; CHECK: bb.2.else:
successors: %bb.3(0x80000000)
%11:_(s8) = G_CONSTANT i8 1
; CHECK: [[T3:%[0-9]+]]:_(s8) = G_TRUNC [[T0]](s32)
%7:_(s8) = G_SUB %2, %11
; CHECK: [[T4:%[0-9]+]]:_(s8) = G_SUB [[T3]], {{.*}}
G_BR %bb.3.exit
bb.3.exit:
; CHECK: bb.3.exit:
%8:_(s8) = G_PHI %6:_(s8), %bb.1, %7:_(s8), %bb.2
; CHECK: [[T5:%[0-9]+]]:_(s8) = G_PHI [[T2]](s8), %bb.1, [[T4]](s8)
%9:_(s32) = G_ZEXT %8
; CHECK: [[T6:%[0-9]+]]:_(s32) = G_ZEXT [[T5]](s8)
; CHECK: $w0 = COPY [[T0]](s32)
; CHECK: $w1 = COPY [[T6]](s32)
$w0 = COPY %3
$w1 = COPY %9
...
|
