| # RUN: llc %s -mtriple=aarch64-apple-ios -run-pass=aarch64-collect-loh -run-pass=machine-outliner -stats -o - 2>%t | FileCheck %s |
| # RUN: FileCheck %s --input-file=%t --check-prefix=STATS |
| # REQUIRES: asserts |
| |
| --- | |
| define void @func0() noredzone minsize { ret void } |
| |
| @g0 = external global i32 |
| ... |
| --- |
| # CHECK-LABEL: name: func0 |
| name: func0 |
| tracksRegLiveness: true |
| body: | |
| ; CHECK-LABEL: bb.0: |
| bb.0: |
| ; CHECK: BL @OUTLINED_FUNCTION_0 |
| $x10 = ADRP target-flags(aarch64-page) @g0 |
| $x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0 |
| $w0 = ORRWri $wzr, 1 |
| $w0 = ORRWri $wzr, 1 |
| $w0 = ORRWri $wzr, 1 |
| $w0 = ORRWri $wzr, 1 |
| |
| ; CHECK-LABEL: bb.1: |
| bb.1: |
| ; CHECK: BL @OUTLINED_FUNCTION_0 |
| ; MCLOH_AdrpAdd is not generated because $x11 is still live. If we want to |
| ; outline these instructions, we must remove the MCLOH_AdrpAdd from bb.0. |
| $x10 = ADRP target-flags(aarch64-page) @g0 |
| $x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0 |
| $w0 = ORRWri $wzr, 1 |
| $w0 = ORRWri $wzr, 1 |
| $w0 = ORRWri $wzr, 1 |
| $w0 = ORRWri $wzr, 1 |
| ; CHECK: $x12 = ADDXri $x11, target-flags(aarch64-pageoff) @g0, 0 |
| $x12 = ADDXri $x11, target-flags(aarch64-pageoff) @g0, 0 |
| |
| ... |
| |
| # CHECK-LABEL: name: OUTLINED_FUNCTION_0 |
| # CHECK: $x10 = ADRP target-flags(aarch64-page) @g0 |
| # CHECK: $x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0 |
| # CHECK: $w0 = ORRWri $wzr, 1 |
| # CHECK: $w0 = ORRWri $wzr, 1 |
| # CHECK: $w0 = ORRWri $wzr, 1 |
| # CHECK: $w0 = ORRWri $wzr, 1 |
| |
| # STATS: 1 aarch64-collect-loh - Number of simplifiable ADRP + ADD |
| # STATS: 1 machine-outliner - Total number of Linker Optimization Hints removed |
