| # RUN: llc -mtriple=aarch64--- -run-pass=machine-outliner \ |
| # RUN: -verify-machineinstrs %s -o - | FileCheck %s |
| |
| # Ensure that we can outline candidates with compatible call/frame classes. |
| # |
| # - Save/restores that don't impact the stack can be outlined together. |
| # - Save/restores that impact the stack if the outlined sequence doesn't use |
| # the stack. |
| |
| --- | |
| define void @no-save1() #0 { ret void } |
| define void @no-save2() #0 { ret void } |
| define void @reg-save() #0 { ret void } |
| define void @stack-save() #0 { ret void } |
| attributes #0 = { minsize noinline noredzone "frame-pointer"="all" } |
| ... |
| --- |
| |
| name: no-save1 |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $lr |
| $lr = ORRXri $xzr, 1 |
| bb.1: |
| ; CHECK-LABEL: name: no-save1 |
| ; CHECK: BL [[FN:@OUTLINED_FUNCTION_[0-9]+]] |
| ; CHECK-NOT: STRXpre |
| ; CHECK-NOT: $lr = |
| ; CHECK-NOT: ORRXrs |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| bb.2: |
| RET undef $lr |
| |
| ... |
| --- |
| |
| name: no-save2 |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $lr |
| $lr = ORRXri $xzr, 1 |
| bb.1: |
| ; CHECK-LABEL: name: no-save2 |
| ; CHECK: BL [[FN]] |
| ; CHECK-NOT: STRXpre |
| ; CHECK-NOT: $lr = |
| ; CHECK-NOT: ORRXrs |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| bb.2: |
| RET undef $lr |
| ... |
| --- |
| |
| name: reg-save |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $lr |
| $lr = ORRXri $xzr, 1 |
| bb.1: |
| liveins: $lr |
| ; CHECK-LABEL: name: reg-save |
| ; CHECK: $[[REG:x[0-9]+]] = ORRXrs $xzr, $lr, 0 |
| ; CHECK-NEXT: BL [[FN]] |
| ; CHECK-NEXT: $lr = ORRXrs $xzr, $[[REG]], 0 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| bb.2: |
| liveins: $lr |
| RET undef $lr |
| |
| ... |
| --- |
| |
| name: stack-save |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp |
| $lr = ORRXri $xzr, 1 |
| bb.1: |
| liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp |
| ; CHECK-LABEL: name: stack-save |
| ; CHECK: $sp = STRXpre $lr, $sp, -16 |
| ; CHECK-NEXT: BL [[FN]] |
| ; CHECK-NEXT: $sp, $lr = LDRXpost $sp, 16 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| $w11 = ORRWri $wzr, 1 |
| bb.2: |
| liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x18, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28, $fp |
| RET undef $lr |