| # RUN: llc -o /dev/null %s -mtriple=aarch64-apple-ios -run-pass=aarch64-collect-loh -debug-only=aarch64-collect-loh 2>&1 | FileCheck %s |
| # RUN: llc -debugify-and-strip-all-safe -o /dev/null %s -mtriple=aarch64-apple-ios -run-pass=aarch64-collect-loh -debug-only=aarch64-collect-loh 2>&1 | FileCheck %s |
| # REQUIRES: asserts |
| --- | |
| define void @func0() { ret void } |
| |
| declare void @extfunc() |
| |
| @g0 = external global i32 |
| @g1 = external global i32 |
| @g2 = external global i32 |
| @g3 = external global i32 |
| @g4 = external global i32 |
| @g5 = external global i32 |
| ... |
| --- |
| # Check various LOH variants. Remember that the algorithms walks the basic |
| # blocks backwards. |
| # CHECK-LABEL: ********** AArch64 Collect LOH ********** |
| # CHECK-LABEL: Looking in function func0 |
| name: func0 |
| tracksRegLiveness: true |
| body: | |
| bb.0: |
| ; CHECK: Adding MCLOH_AdrpAdrp: |
| ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3 |
| ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g4 |
| ; CHECK-NEXT: Adding MCLOH_AdrpAdrp: |
| ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g2 |
| ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3 |
| ; CHECK-NEXT: Adding MCLOH_AdrpAdrp: |
| ; CHECK-NEXT: $x0 = ADRP target-flags(aarch64-page) @g0 |
| ; CHECK-NEXT: $x0 = ADRP target-flags(aarch64-page) @g1 |
| $x0 = ADRP target-flags(aarch64-page) @g0 |
| $x0 = ADRP target-flags(aarch64-page) @g1 |
| $x1 = ADRP target-flags(aarch64-page) @g2 |
| $x1 = ADRP target-flags(aarch64-page) @g3 |
| $x1 = ADRP target-flags(aarch64-page) @g4 |
| |
| bb.1: |
| ; CHECK-NEXT: Adding MCLOH_AdrpAdd: |
| ; CHECK-NEXT: $x20 = ADRP target-flags(aarch64-page) @g0 |
| ; CHECK-NEXT: $x3 = ADDXri $x20, target-flags(aarch64-pageoff) @g0 |
| ; CHECK-NEXT: Adding MCLOH_AdrpAdd: |
| ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g0 |
| ; CHECK-NEXT: $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g0 |
| $x1 = ADRP target-flags(aarch64-page) @g0 |
| $x9 = SUBXri undef $x11, 5, 0 ; should not affect MCLOH formation |
| $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g0, 0 |
| $x20 = ADRP target-flags(aarch64-page) @g0 |
| BL @extfunc, csr_aarch64_aapcs ; should not clobber X20 |
| $x3 = ADDXri $x20, target-flags(aarch64-pageoff) @g0, 0 |
| |
| bb.2: |
| ; CHECK-NOT: MCLOH_AdrpAdd |
| $x9 = ADRP target-flags(aarch64-page) @g0 |
| BL @extfunc, csr_aarch64_aapcs ; clobbers x9 |
| ; Verification requires the use of 'undef' in front of the clobbered $x9 |
| $x9 = ADDXri undef $x9, target-flags(aarch64-pageoff) @g0, 0 |
| |
| bb.3: |
| ; CHECK-NOT: MCLOH_AdrpAdd |
| $x10 = ADRP target-flags(aarch64-page) @g0 |
| HINT 0, implicit def $x10 ; clobbers x10 |
| $x10 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0 |
| |
| bb.4: |
| ; Cannot produce a LOH for multiple users |
| ; CHECK-NOT: MCLOH_AdrpAdd |
| $x10 = ADRP target-flags(aarch64-page) @g0 |
| HINT 0, implicit def $x10 ; clobbers x10 |
| $x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0 |
| $x12 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0 |
| |
| bb.5: |
| ; CHECK-NEXT: Adding MCLOH_AdrpLdr: |
| ; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g2 |
| ; CHECK-NEXT: $s6 = LDRSui $x5, target-flags(aarch64-pageoff) @g2 |
| ; CHECK-NEXT: Adding MCLOH_AdrpLdr: |
| ; CHECK-NEXT: $x4 = ADRP target-flags(aarch64-page) @g2 |
| ; CHECK-NEXT: $x4 = LDRXui $x4, target-flags(aarch64-pageoff) @g2 |
| $x4 = ADRP target-flags(aarch64-page) @g2 |
| $x4 = LDRXui $x4, target-flags(aarch64-pageoff) @g2 |
| $x5 = ADRP target-flags(aarch64-page) @g2 |
| $s6 = LDRSui $x5, target-flags(aarch64-pageoff) @g2 |
| |
| bb.6: |
| ; CHECK-NEXT: Adding MCLOH_AdrpLdrGot: |
| ; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page, aarch64-got) @g2 |
| ; CHECK-NEXT: $x6 = LDRXui $x5, target-flags(aarch64-pageoff, aarch64-got) @g2 |
| ; CHECK-NEXT: Adding MCLOH_AdrpLdrGot: |
| ; CHECK-NEXT: $x4 = ADRP target-flags(aarch64-page, aarch64-got) @g2 |
| ; CHECK-NEXT: $x4 = LDRXui $x4, target-flags(aarch64-pageoff, aarch64-got) @g2 |
| $x4 = ADRP target-flags(aarch64-page, aarch64-got) @g2 |
| $x4 = LDRXui $x4, target-flags(aarch64-pageoff, aarch64-got) @g2 |
| $x5 = ADRP target-flags(aarch64-page, aarch64-got) @g2 |
| $x6 = LDRXui $x5, target-flags(aarch64-pageoff, aarch64-got) @g2 |
| |
| bb.7: |
| ; CHECK-NOT: Adding MCLOH_AdrpLdrGot: |
| ; Loading a float value from a GOT table makes no sense so this should not |
| ; produce an LOH. |
| $x11 = ADRP target-flags(aarch64-page, aarch64-got) @g5 |
| $s11 = LDRSui $x11, target-flags(aarch64-pageoff, aarch64-got) @g5 |
| |
| bb.8: |
| ; CHECK-NEXT: Adding MCLOH_AdrpAddLdr: |
| ; CHECK-NEXT: $x7 = ADRP target-flags(aarch64-page) @g3 |
| ; CHECK-NEXT: $x8 = ADDXri $x7, target-flags(aarch64-pageoff) @g3 |
| ; CHECK-NEXT: $d1 = LDRDui $x8, 8 |
| $x7 = ADRP target-flags(aarch64-page) @g3 |
| $x8 = ADDXri $x7, target-flags(aarch64-pageoff) @g3, 0 |
| $d1 = LDRDui $x8, 8 |
| |
| bb.9: |
| ; CHECK-NEXT: Adding MCLOH_AdrpAdd: |
| ; CHECK-NEXT: $x3 = ADRP target-flags(aarch64-page) @g3 |
| ; CHECK-NEXT: $x3 = ADDXri $x3, target-flags(aarch64-pageoff) @g3 |
| ; CHECK-NEXT: Adding MCLOH_AdrpAdd: |
| ; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g3 |
| ; CHECK-NEXT: $x2 = ADDXri $x5, target-flags(aarch64-pageoff) @g3 |
| ; CHECK-NEXT: Adding MCLOH_AdrpAddStr: |
| ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page) @g3 |
| ; CHECK-NEXT: $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g3 |
| ; CHECK-NEXT: STRXui $xzr, $x1, 16 |
| $x1 = ADRP target-flags(aarch64-page) @g3 |
| $x1 = ADDXri $x1, target-flags(aarch64-pageoff) @g3, 0 |
| STRXui $xzr, $x1, 16 |
| |
| ; This sequence should just produce an AdrpAdd (not AdrpAddStr) |
| $x5 = ADRP target-flags(aarch64-page) @g3 |
| $x2 = ADDXri $x5, target-flags(aarch64-pageoff) @g3, 0 |
| STRXui $x2, undef $x11, 16 |
| |
| ; This sequence should just produce an AdrpAdd (not AdrpAddStr) |
| $x3 = ADRP target-flags(aarch64-page) @g3 |
| $x3 = ADDXri $x3, target-flags(aarch64-pageoff) @g3, 0 |
| STRXui $x3, $x3, 16 |
| |
| bb.10: |
| ; CHECK-NEXT: Adding MCLOH_AdrpLdr: |
| ; CHECK-NEXT: $x2 = ADRP target-flags(aarch64-page) @g3 |
| ; CHECK-NEXT: $x2 = LDRXui $x2, target-flags(aarch64-pageoff) @g3 |
| ; CHECK-NEXT: Adding MCLOH_AdrpLdrGotLdr: |
| ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4 |
| ; CHECK-NEXT: $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4 |
| ; CHECK-NEXT: $x1 = LDRXui $x1, 24 |
| $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4 |
| $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4 |
| $x1 = LDRXui $x1, 24 |
| ; Should just produce a MCLOH_AdrpLdr (not MCLOH_AdrpLdrGotLdr) |
| $x2 = ADRP target-flags(aarch64-page) @g3 |
| $x2 = LDRXui $x2, target-flags(aarch64-pageoff) @g3 |
| $x2 = LDRXui $x2, 24 |
| |
| bb.11: |
| ; CHECK-NEXT: Adding MCLOH_AdrpLdr |
| ; CHECK-NEXT: $x5 = ADRP target-flags(aarch64-page) @g1 |
| ; CHECK-NEXT: $x5 = LDRXui $x5, target-flags(aarch64-pageoff) @g1 |
| ; CHECK-NEXT: Adding MCLOH_AdrpLdrGotStr: |
| ; CHECK-NEXT: $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4 |
| ; CHECK-NEXT: $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4 |
| ; CHECK-NEXT: STRXui $xzr, $x1, 32 |
| $x1 = ADRP target-flags(aarch64-page, aarch64-got) @g4 |
| $x1 = LDRXui $x1, target-flags(aarch64-pageoff, aarch64-got) @g4 |
| STRXui $xzr, $x1, 32 |
| ; Should just produce a MCLOH_AdrpLdr (not MCLOH_AdrpLdrGotStr) |
| $x5 = ADRP target-flags(aarch64-page) @g1 |
| $x5 = LDRXui $x5, target-flags(aarch64-pageoff) @g1 |
| STRXui undef $x11, $x5, 32 |
| |
| bb.12: |
| ; CHECK-NOT: MCLOH_AdrpAdrp |
| ; CHECK: Adding MCLOH_AdrpAddLdr |
| ; $x9 = ADRP @g4 |
| ; $x9 = ADDXri $x9, @g4 |
| ; $x5 = LDRXui $x9, 0 |
| $x9 = ADRP target-flags(aarch64-page, aarch64-got) @g4 |
| $x9 = ADDXri $x9, target-flags(aarch64-pageoff, aarch64-got) @g4, 0 |
| $x5 = LDRXui $x9, 0 |
| $x9 = ADRP target-flags(aarch64-page, aarch64-got) @g5 |
| |
| bb.13: |
| ; Cannot produce a LOH for multiple users |
| ; CHECK-NOT: MCLOH_AdrpAdd |
| $x10 = ADRP target-flags(aarch64-page) @g0 |
| $x11 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0 |
| B %bb.14 |
| |
| bb.14: |
| liveins: $x10 |
| $x12 = ADDXri $x10, target-flags(aarch64-pageoff) @g0, 0 |
| |
| bb.15: |
| ; Should not produce a LOH when reg is clobbered by bundled regmask |
| ; CHECK-NOT: MCLOH_AdrpAdrp |
| $x8 = ADRP target-flags(aarch64-page) @g0 |
| BUNDLE { |
| BL @extfunc, csr_aarch64_aapcs |
| } |
| $x8 = ADRP target-flags(aarch64-page) @g1 |
| ... |
