| # RUN: llc -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 |
| ... |
