# RUN: llc -o /dev/null %s -mtriple=aarch64-apple-ios -run-pass=aarch64-collect-loh -debug-only=aarch64-collect-loh 2>&1 | FileCheck %s
# RUN: llc -debugify-and-strip-all-safe -o /dev/null %s -mtriple=aarch64-apple-ios -run-pass=aarch64-collect-loh -debug-only=aarch64-collect-loh 2>&1 | FileCheck %s
# REQUIRES: asserts
--- |
define void @func0() { ret void }
declare void @extfunc()
@g0 = external global i32
@g1 = external global i32
@g2 = external global i32
@g3 = external global i32
@g4 = external global i32
@g5 = external global i32
...
---
# Check various LOH variants. Remember that the algorithms walks the basic
# blocks backwards.
# CHECK-LABEL: ********** AArch64 Collect LOH **********
# CHECK-LABEL: Looking in function func0
name: func0
tracksRegLiveness: true
body: |
bb.0:
; CHECK: Adding MCLOH_AdrpAdrp:
; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3
; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g4
; CHECK-NEXT: Adding MCLOH_AdrpAdrp:
; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g2
; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3
; CHECK-NEXT: Adding MCLOH_AdrpAdrp:
; CHECK-NEXT: $x0 = ADRP target-flags(aarch64-page) @g0
; CHECK-NEXT: $x0 = ADRP target-flags(aarch64-page) @g1
$x0 = ADRP target-flags(aarch64-page) @g0
$x0 = ADRP target-flags(aarch64-page) @g1
$x1 = ADRP target-flags(aarch64-page) @g2
$x1 = ADRP target-flags(aarch64-page) @g3
$x1 = ADRP target-flags(aarch64-page) @g4
bb.1:
; CHECK-NEXT: Adding MCLOH_AdrpAdd:
; CHECK-NEXT: $x20 = ADRP target-flags(aarch64-page) @g0
; CHECK-NEXT: $x3 = ADDXri $x20, target-flags(aarch64-pageoff) @g0
; CHECK-NEXT: Adding MCLOH_AdrpAdd:
; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g0
; CHECK-NEXT: $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g0
$x1 = ADRP target-flags(aarch64-page) @g0
$x9 = SUBXri undef $x11, 5, 0 ; should not affect MCLOH formation
$x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g0, 0
$x20 = ADRP target-flags(aarch64-page) @g0
BL @extfunc, csr_aarch64_aapcs ; should not clobber X20
$x3 = ADDXri $x20, target-flags(aarch64-pageoff) @g0, 0
bb.2:
; CHECK-NOT: MCLOH_AdrpAdd
$x9 = ADRP target-flags(aarch64-page) @g0
BL @extfunc, csr_aarch64_aapcs ; clobbers x9
; Verification requires the use of 'undef' in front of the clobbered $x9
$x9 = ADDXri undef $x9, target-flags(aarch64-pageoff) @g0, 0
bb.3:
; CHECK-NOT: MCLOH_AdrpAdd
$x10 = ADRP target-flags(aarch64-page) @g0
HINT 0, implicit def $x10 ; clobbers x10
$x10 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
bb.4:
; Cannot produce a LOH for multiple users
; CHECK-NOT: MCLOH_AdrpAdd
$x10 = ADRP target-flags(aarch64-page) @g0
HINT 0, implicit def $x10 ; clobbers x10
$x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
$x12 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
bb.5:
; CHECK-NEXT: Adding MCLOH_AdrpLdr:
; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g2
; CHECK-NEXT: $s6 = LDRSui $x5, target-flags(aarch64-pageoff) @g2
; CHECK-NEXT: Adding MCLOH_AdrpLdr:
; CHECK-NEXT: $x4 = ADRP target-flags(aarch64-page) @g2
; CHECK-NEXT: $x4 = LDRXui $x4, target-flags(aarch64-pageoff) @g2
$x4 = ADRP target-flags(aarch64-page) @g2
$x4 = LDRXui $x4, target-flags(aarch64-pageoff) @g2
$x5 = ADRP target-flags(aarch64-page) @g2
$s6 = LDRSui $x5, target-flags(aarch64-pageoff) @g2
bb.6:
; CHECK-NEXT: Adding MCLOH_AdrpLdrGot:
; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page, aarch64-got) @g2
; CHECK-NEXT: $x6 = LDRXui $x5, target-flags(aarch64-pageoff, aarch64-got) @g2
; CHECK-NEXT: Adding MCLOH_AdrpLdrGot:
; CHECK-NEXT: $x4 = ADRP target-flags(aarch64-page, aarch64-got) @g2
; CHECK-NEXT: $x4 = LDRXui $x4, target-flags(aarch64-pageoff, aarch64-got) @g2
$x4 = ADRP target-flags(aarch64-page, aarch64-got) @g2
$x4 = LDRXui $x4, target-flags(aarch64-pageoff, aarch64-got) @g2
$x5 = ADRP target-flags(aarch64-page, aarch64-got) @g2
$x6 = LDRXui $x5, target-flags(aarch64-pageoff, aarch64-got) @g2
bb.7:
; CHECK-NOT: Adding MCLOH_AdrpLdrGot:
; Loading a float value from a GOT table makes no sense so this should not
; produce an LOH.
$x11 = ADRP target-flags(aarch64-page, aarch64-got) @g5
$s11 = LDRSui $x11, target-flags(aarch64-pageoff, aarch64-got) @g5
bb.8:
; CHECK-NEXT: Adding MCLOH_AdrpAddLdr:
; CHECK-NEXT: $x7 = ADRP target-flags(aarch64-page) @g3
; CHECK-NEXT: $x8 = ADDXri $x7, target-flags(aarch64-pageoff) @g3
; CHECK-NEXT: $d1 = LDRDui $x8, 8
$x7 = ADRP target-flags(aarch64-page) @g3
$x8 = ADDXri $x7, target-flags(aarch64-pageoff) @g3, 0
$d1 = LDRDui $x8, 8
bb.9:
; CHECK-NEXT: Adding MCLOH_AdrpAdd:
; CHECK-NEXT: $x3 = ADRP target-flags(aarch64-page) @g3
; CHECK-NEXT: $x3 = ADDXri $x3, target-flags(aarch64-pageoff) @g3
; CHECK-NEXT: Adding MCLOH_AdrpAdd:
; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g3
; CHECK-NEXT: $x2 = ADDXri $x5, target-flags(aarch64-pageoff) @g3
; CHECK-NEXT: Adding MCLOH_AdrpAddStr:
; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3
; CHECK-NEXT: $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g3
; CHECK-NEXT: STRXui $xzr, $x1, 16
$x1 = ADRP target-flags(aarch64-page) @g3
$x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g3, 0
STRXui $xzr, $x1, 16
; This sequence should just produce an AdrpAdd (not AdrpAddStr)
$x5 = ADRP target-flags(aarch64-page) @g3
$x2 = ADDXri $x5, target-flags(aarch64-pageoff) @g3, 0
STRXui $x2, undef $x11, 16
; This sequence should just produce an AdrpAdd (not AdrpAddStr)
$x3 = ADRP target-flags(aarch64-page) @g3
$x3 = ADDXri $x3, target-flags(aarch64-pageoff) @g3, 0
STRXui $x3, $x3, 16
bb.10:
; CHECK-NEXT: Adding MCLOH_AdrpLdr:
; CHECK-NEXT: $x2 = ADRP target-flags(aarch64-page) @g3
; CHECK-NEXT: $x2 = LDRXui $x2, target-flags(aarch64-pageoff) @g3
; CHECK-NEXT: Adding MCLOH_AdrpLdrGotLdr:
; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4
; CHECK-NEXT: $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4
; CHECK-NEXT: $x1 = LDRXui $x1, 24
$x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4
$x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4
$x1 = LDRXui $x1, 24
; Should just produce a MCLOH_AdrpLdr (not MCLOH_AdrpLdrGotLdr)
$x2 = ADRP target-flags(aarch64-page) @g3
$x2 = LDRXui $x2, target-flags(aarch64-pageoff) @g3
$x2 = LDRXui $x2, 24
bb.11:
; CHECK-NEXT: Adding MCLOH_AdrpLdr
; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g1
; CHECK-NEXT: $x5 = LDRXui $x5, target-flags(aarch64-pageoff) @g1
; CHECK-NEXT: Adding MCLOH_AdrpLdrGotStr:
; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4
; CHECK-NEXT: $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4
; CHECK-NEXT: STRXui $xzr, $x1, 32
$x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4
$x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4
STRXui $xzr, $x1, 32
; Should just produce a MCLOH_AdrpLdr (not MCLOH_AdrpLdrGotStr)
$x5 = ADRP target-flags(aarch64-page) @g1
$x5 = LDRXui $x5, target-flags(aarch64-pageoff) @g1
STRXui undef $x11, $x5, 32
bb.12:
; CHECK-NOT: MCLOH_AdrpAdrp
; CHECK: Adding MCLOH_AdrpAddLdr
; $x9 = ADRP @g4
; $x9 = ADDXri $x9, @g4
; $x5 = LDRXui $x9, 0
$x9 = ADRP target-flags(aarch64-page, aarch64-got) @g4
$x9 = ADDXri $x9, target-flags(aarch64-pageoff, aarch64-got) @g4, 0
$x5 = LDRXui $x9, 0
$x9 = ADRP target-flags(aarch64-page, aarch64-got) @g5
bb.13:
; Cannot produce a LOH for multiple users
; CHECK-NOT: MCLOH_AdrpAdd
$x10 = ADRP target-flags(aarch64-page) @g0
$x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
B %bb.14
bb.14:
liveins: $x10
$x12 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0
bb.15:
; Should not produce a LOH when reg is clobbered by bundled regmask
; CHECK-NOT: MCLOH_AdrpAdrp
$x8 = ADRP target-flags(aarch64-page) @g0
BUNDLE {
BL @extfunc, csr_aarch64_aapcs
}
$x8 = ADRP target-flags(aarch64-page) @g1
...
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