| # RUN: llc -mtriple=arm64-applie-ios7.0 -start-before=aarch64-lower-homogeneous-prolog-epilog -homogeneous-prolog-epilog %s -o - | FileCheck %s |
| # |
| # This test ensure no outlined epilog is formed when X16 is live across the helper. |
| --- | |
| @FuncPtr = local_unnamed_addr global i32 (i32)* null, align 8 |
| |
| define i32 @_Z3fooi(i32) minsize "frame-pointer"="all" { |
| ret i32 0 |
| } |
| |
| declare i32 @_Z3gooii(i32, i32) |
| ... |
| --- |
| name: _Z3fooi |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $lr, $x19, $x20 |
| successors: %bb.1 |
| frame-setup HOM_Prolog $lr, $fp, $x19, $x20, 16 |
| frame-setup CFI_INSTRUCTION def_cfa $w29, 16 |
| frame-setup CFI_INSTRUCTION offset $w30, -8 |
| frame-setup CFI_INSTRUCTION offset $w29, -16 |
| frame-setup CFI_INSTRUCTION offset $w19, -24 |
| frame-setup CFI_INSTRUCTION offset $w20, -32 |
| $w19 = nsw ADDWri $w0, 1, 0 |
| $w1 = ORRWrr $wzr, $w0 |
| $w0 = ORRWrr $wzr, $w19 |
| BL @_Z3gooii, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $w0, implicit $w1, implicit-def $sp, implicit-def $w0 |
| $x8 = ADRP target-flags(aarch64-page) @FuncPtr |
| $x16 = LDRXui killed renamable $x8, target-flags(aarch64-pageoff, aarch64-nc) @FuncPtr |
| $w0 = nsw ADDWrr renamable $w0, killed renamable $w19 |
| $lr, $fp, $x19, $x20 = frame-destroy HOM_Epilog |
| B %bb.1 |
| |
| bb.1: |
| liveins: $w0, $x16 |
| TCRETURNri killed renamable $x16, 0, csr_aarch64_aapcs, implicit $sp, implicit $w0 |
| # CHECK: _OUTLINED_FUNCTION_PROLOG_FRAME16_x30x29x19x20: |
| # CHECK-NOT: _OUTLINED_FUNCTION_EPILOG_x30x29x19x20: |
