| # RUN: llc -mtriple=aarch64--- -run-pass=prologepilog -run-pass=machine-outliner -verify-machineinstrs -frame-pointer=non-leaf %s -o - | FileCheck %s |
| --- | |
| |
| @x = common global i32 0, align 4 |
| |
| define void @baz() #0 { |
| ret void |
| } |
| |
| define i32 @main() #0 { |
| ret i32 0 |
| } |
| |
| define void @bar(i32 %a) #0 { |
| ret void |
| } |
| |
| attributes #0 = { noinline noredzone } |
| ... |
| --- |
| # This test ensures that we |
| # - Create outlined functions |
| # - Don't outline anything to do with LR or W30 |
| # - Save LR when it's not available |
| # - Functions whose addresses are taken can still be outlined |
| # |
| # CHECK-LABEL: main |
| # CHECK-LABEL: bb.1: |
| # CHECK-DAG: BL @OUTLINED_FUNCTION_[[F0:[0-9]+]] |
| # CHECK-NEXT: $lr = ORRXrs $xzr, $x[[REG:[0-9]+]], 0 |
| # CHECK-NEXT: STRHHroW $w12, $x9, $w30, 1, 1 |
| # CHECK-NEXT: $lr = ORRXri $xzr, 1 |
| |
| # CHECK-DAG: bb.2 |
| # CHECK: BL @OUTLINED_FUNCTION_[[F0]] |
| # CHECK-NEXT: $lr = ORRXrs $xzr, $x[[REG]], 0 |
| # CHECK-NEXT: STRHHroW $w12, $x9, $w30, 1, 1 |
| # CHECK-NEXT: $lr = ORRXri $xzr, 1 |
| |
| # CHECK-DAG: bb.3 |
| # CHECK: BL @OUTLINED_FUNCTION_[[F0]] |
| # CHECK-NEXT: $lr = ORRXrs $xzr, $x[[REG]], 0 |
| # CHECK-NEXT: STRHHroW $w12, $x9, $w30, 1, 1 |
| # CHECK-NEXT: $lr = ORRXri $xzr, 1 |
| name: main |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $lr |
| $sp = frame-setup SUBXri $sp, 16, 0 |
| renamable $x9 = ADRP target-flags(aarch64-page) @bar |
| $x9 = ORRXri $xzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w30 = ORRWri $wzr, 1 |
| $lr = ORRXri $xzr, 1 |
| bb.1: |
| liveins: $lr |
| $x20, $x19 = LDPXi $sp, 10 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| renamable $x9 = ADRP target-flags(aarch64-page) @x |
| $x12 = ADDXri $sp, 48, 0; |
| STRHHroW $w12, $x9, $w30, 1, 1 |
| $lr = ORRXri $xzr, 1 |
| bb.2: |
| liveins: $lr |
| $x20, $x19 = LDPXi $sp, 10 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| renamable $x9 = ADRP target-flags(aarch64-page) @x |
| $x12 = ADDXri $sp, 48, 0; |
| STRHHroW $w12, $x9, $w30, 1, 1 |
| $lr = ORRXri $xzr, 1 |
| bb.3: |
| liveins: $lr |
| $x20, $x19 = LDPXi $sp, 10 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 1 |
| renamable $x9 = ADRP target-flags(aarch64-page) @x |
| $x12 = ADDXri $sp, 48, 0; |
| STRHHroW $w12, $x9, $w30, 1, 1 |
| $lr = ORRXri $xzr, 1 |
| $sp = ADDXri $sp, 16, 0 |
| bb.4: |
| liveins: $lr |
| RET undef $lr |
| |
| ... |
| --- |
| # This test ensures that we can avoid saving LR when it's available. |
| # It also makes sure that KILL instructions don't impact outlining. |
| # CHECK-LABEL: bb.1: |
| # CHECK-NOT: BL @baz, implicit-def dead $lr, implicit $sp |
| # CHECK: BL @OUTLINED_FUNCTION_[[F1:[0-9]+]], implicit-def $lr, implicit $sp |
| # CHECK-NEXT: $w11 = ORRWri $wzr, 2 |
| # CHECK-NEXT: BL @OUTLINED_FUNCTION_[[F1]], implicit-def $lr, implicit $sp |
| # CHECK-NEXT: $w8 = ORRWri $wzr, 0 |
| # CHECK-NOT: $w11 = KILL renamable $w11, implicit killed $w11 |
| name: bar |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $lr, $w8 |
| $sp = frame-setup SUBXri $sp, 32, 0 |
| $fp = frame-setup ADDXri $sp, 16, 0 |
| |
| bb.1: |
| BL @baz, implicit-def dead $lr, implicit $sp |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = KILL renamable $w11, implicit killed $w11 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| BL @baz, implicit-def dead $lr, implicit $sp |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 2 |
| BL @baz, implicit-def dead $lr, implicit $sp |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| BL @baz, implicit-def dead $lr, implicit $sp |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w8 = ORRWri $wzr, 0 |
| |
| bb.2: |
| $w15 = ORRWri $wzr, 1 |
| $w15 = ORRWri $wzr, 1 |
| $w15 = ORRWri $wzr, 1 |
| $w15 = ORRWri $wzr, 1 |
| $x15 = ADDXri $sp, 48, 0; |
| $w9 = ORRWri $wzr, 0 |
| $w15 = ORRWri $wzr, 1 |
| $w15 = ORRWri $wzr, 1 |
| $w15 = ORRWri $wzr, 1 |
| $w15 = ORRWri $wzr, 1 |
| $x15 = ADDXri $sp, 48, 0; |
| $w8 = ORRWri $wzr, 0 |
| |
| bb.3: |
| $fp, $lr = LDPXi $sp, 2 |
| $sp = ADDXri $sp, 32, 0 |
| RET undef $lr |
| |
| ... |
| --- |
| name: baz |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $w0, $lr, $w8 |
| RET undef $lr |
| |
| # CHECK-LABEL: name: OUTLINED_FUNCTION_{{[0-9]}} |
| # CHECK=LABEL: name: OUTLINED_FUNCTION_{{[1-9]}} |