| # RUN: llc -mtriple=aarch64-arm-none-eabi -run-pass=prologepilog \ |
| # RUN: -run-pass=machine-outliner -verify-machineinstrs %s -o - | FileCheck %s |
| |
| # Check that we save LR to a callee-saved register when possible. |
| # foo() should use a callee-saved register. However, bar() should not. |
| --- | |
| |
| define void @foo() #0 { |
| ret void |
| } |
| |
| define void @bar() #0 { |
| ret void |
| } |
| |
| attributes #0 = { nounwind "sign-return-address"="non-leaf" "sign-return-address-key"="b_key" minsize noinline noredzone "frame-pointer"="all" } |
| ... |
| --- |
| # CHECK-LABEL: name: foo |
| # CHECK: bb.0: |
| # CHECK: frame-setup EMITBKEY |
| # CHECK-NEXT: frame-setup PACIBSP |
| # CHECK-NEXT: frame-setup CFI_INSTRUCTION negate_ra_sign_state |
| # CHECK: bb.1: |
| # CHECK: BL @[[OUTLINED_FUNCTION:OUTLINED_FUNCTION_[0-9]+]] |
| # CHECK: bb.2: |
| # CHECK: BL @[[OUTLINED_FUNCTION]] |
| # CHECK: bb.3: |
| # CHECK: BL @[[OUTLINED_FUNCTION]] |
| # CHECK: bb.4: |
| # CHECK: BL @[[OUTLINED_FUNCTION]] |
| # CHECK: bb.5: |
| # CHECK: frame-destroy AUTIBSP |
| # CHECK-NEXT: RET |
| name: foo |
| tracksRegLiveness: true |
| fixedStack: |
| body: | |
| bb.0: |
| $x25 = ORRXri $xzr, 1 |
| $lr = ORRXri $xzr, 1 |
| bb.1: |
| liveins: $lr, $w9 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 2 |
| bb.2: |
| liveins: $lr, $w9 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 2 |
| bb.3: |
| liveins: $lr, $w9 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 2 |
| bb.4: |
| liveins: $lr, $w9 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 1 |
| $w9 = ORRWri $wzr, 2 |
| bb.5: |
| liveins: $w9 |
| RET undef $lr |
| |
| ... |
| --- |
| # CHECK: name: bar |
| # CHECK: bb.0: |
| # CHECK-NOT: OUTLINED_FUNCTION_ |
| # CHECK: bb.1: |
| # CHECK-NOT: OUTLINED_FUNCTION_ |
| # CHECK: bb.2: |
| # CHECK-NOT: OUTLINED_FUNCTION_ |
| # CHECK: bb.3: |
| # CHECK-NOT: OUTLINED_FUNCTION_ |
| # CHECK: RET |
| name: bar |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 2 |
| bb.1: |
| liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 2 |
| bb.2: |
| liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w10 = ORRWri $wzr, 1 |
| $w12 = ORRWri $wzr, 2 |
| bb.3: |
| liveins: $lr, $x0, $x1, $x2, $x3, $x4, $x5, $x6, $x7, $x8, $x9, $x10, $x11, $x12, $x13, $x14, $x15, $x19, $x20, $x21, $x22, $x23, $x20, $x21, $x22, $x23, $x24, $x25, $x26, $x27, $x28 |
| RET undef $lr |
| |
| # CHECK: name: [[OUTLINED_FUNCTION]] |
| # CHECK: body: |
| # CHECK-NEXT: bb.0: |
| # CHECK-NOT: frame-setup EMITBKEY |
| # CHECK-NOT: frame-setup PACI{{[A,B]]}}SP |
| # CHECK-NOT: frame-setup CFI_INSTRUCTION negate_ra_sign_state |
| # CHECK-NOT: frame-destroy AUTI{{[A,B]]}}SP |
