| # RUN: llc -mtriple=aarch64-none-linux-gnu -run-pass greedy -verify-machineinstrs -o - %s | FileCheck %s |
| --- | |
| define i64 @test_subreg_spill_fold() { ret i64 0 } |
| define i64 @test_subreg_spill_fold2() { ret i64 0 } |
| define i64 @test_subreg_spill_fold3() { ret i64 0 } |
| define i64 @test_subreg_fill_fold() { ret i64 0 } |
| define double @test_subreg_fill_fold2() { ret double 0.0 } |
| ... |
| --- |
| # CHECK-LABEL: name: test_subreg_spill_fold |
| # Ensure that the spilled subreg COPY is eliminated and folded into the spill store. |
| name: test_subreg_spill_fold |
| registers: |
| - { id: 0, class: gpr64 } |
| body: | |
| bb.0: |
| ; CHECK: STRXui %xzr, %stack.0, 0 :: (store 8 into %stack.0) |
| undef %0.sub_32 = COPY %wzr |
| INLINEASM $nop, 1, 12, implicit-def dead %x0, 12, implicit-def dead %x1, 12, implicit-def dead %x2, 12, implicit-def dead %x3, 12, implicit-def dead %x4, 12, implicit-def dead %x5, 12, implicit-def dead %x6, 12, implicit-def dead %x7, 12, implicit-def dead %x8, 12, implicit-def dead %x9, 12, implicit-def dead %x10, 12, implicit-def dead %x11, 12, implicit-def dead %x12, 12, implicit-def dead %x13, 12, implicit-def dead %x14, 12, implicit-def dead %x15, 12, implicit-def dead %x16, 12, implicit-def dead %x17, 12, implicit-def dead %x18, 12, implicit-def dead %x19, 12, implicit-def dead %x20, 12, implicit-def dead %x21, 12, implicit-def dead %x22, 12, implicit-def dead %x23, 12, implicit-def dead %x24, 12, implicit-def dead %x25, 12, implicit-def dead %x26, 12, implicit-def dead %x27, 12, implicit-def dead %x28, 12, implicit-def dead %fp, 12, implicit-def dead %lr, 12, implicit-def %sp |
| %x0 = COPY %0 |
| RET_ReallyLR implicit %x0 |
| ... |
| --- |
| # CHECK-LABEL: name: test_subreg_spill_fold2 |
| # Similar to test_subreg_spill_fold, but with a vreg0 register class not containing %WZR. |
| name: test_subreg_spill_fold2 |
| registers: |
| - { id: 0, class: gpr64sp } |
| body: | |
| bb.0: |
| ; CHECK: STRXui %xzr, %stack.0, 0 :: (store 8 into %stack.0) |
| undef %0.sub_32 = COPY %wzr |
| INLINEASM $nop, 1, 12, implicit-def dead %x0, 12, implicit-def dead %x1, 12, implicit-def dead %x2, 12, implicit-def dead %x3, 12, implicit-def dead %x4, 12, implicit-def dead %x5, 12, implicit-def dead %x6, 12, implicit-def dead %x7, 12, implicit-def dead %x8, 12, implicit-def dead %x9, 12, implicit-def dead %x10, 12, implicit-def dead %x11, 12, implicit-def dead %x12, 12, implicit-def dead %x13, 12, implicit-def dead %x14, 12, implicit-def dead %x15, 12, implicit-def dead %x16, 12, implicit-def dead %x17, 12, implicit-def dead %x18, 12, implicit-def dead %x19, 12, implicit-def dead %x20, 12, implicit-def dead %x21, 12, implicit-def dead %x22, 12, implicit-def dead %x23, 12, implicit-def dead %x24, 12, implicit-def dead %x25, 12, implicit-def dead %x26, 12, implicit-def dead %x27, 12, implicit-def dead %x28, 12, implicit-def dead %fp, 12, implicit-def dead %lr, 12, implicit-def %sp |
| %x0 = ADDXri %0, 1, 0 |
| RET_ReallyLR implicit %x0 |
| ... |
| --- |
| # CHECK-LABEL: name: test_subreg_spill_fold3 |
| # Similar to test_subreg_spill_fold, but with a cross register class copy. |
| name: test_subreg_spill_fold3 |
| registers: |
| - { id: 0, class: fpr64 } |
| body: | |
| bb.0: |
| ; CHECK: STRXui %xzr, %stack.0, 0 :: (store 8 into %stack.0) |
| undef %0.ssub = COPY %wzr |
| INLINEASM $nop, 1, 12, implicit-def dead %d0, 12, implicit-def dead %d1, 12, implicit-def dead %d2, 12, implicit-def dead %d3, 12, implicit-def dead %d4, 12, implicit-def dead %d5, 12, implicit-def dead %d6, 12, implicit-def dead %d7, 12, implicit-def dead %d8, 12, implicit-def dead %d9, 12, implicit-def dead %d10, 12, implicit-def dead %d11, 12, implicit-def dead %d12, 12, implicit-def dead %d13, 12, implicit-def dead %d14, 12, implicit-def dead %d15, 12, implicit-def dead %d16, 12, implicit-def dead %d17, 12, implicit-def dead %d18, 12, implicit-def dead %d19, 12, implicit-def dead %d20, 12, implicit-def dead %d21, 12, implicit-def dead %d22, 12, implicit-def dead %d23, 12, implicit-def dead %d24, 12, implicit-def dead %d25, 12, implicit-def dead %d26, 12, implicit-def dead %d27, 12, implicit-def dead %d28, 12, implicit-def dead %d29, 12, implicit-def dead %d30, 12, implicit-def %d31 |
| %x0 = COPY %0 |
| RET_ReallyLR implicit %x0 |
| ... |
| --- |
| # CHECK-LABEL: name: test_subreg_fill_fold |
| # Ensure that the filled COPY is eliminated and folded into the fill load. |
| name: test_subreg_fill_fold |
| registers: |
| - { id: 0, class: gpr32 } |
| - { id: 1, class: gpr64 } |
| body: | |
| bb.0: |
| %0 = COPY %wzr |
| INLINEASM $nop, 1, 12, implicit-def dead %x0, 12, implicit-def dead %x1, 12, implicit-def dead %x2, 12, implicit-def dead %x3, 12, implicit-def dead %x4, 12, implicit-def dead %x5, 12, implicit-def dead %x6, 12, implicit-def dead %x7, 12, implicit-def dead %x8, 12, implicit-def dead %x9, 12, implicit-def dead %x10, 12, implicit-def dead %x11, 12, implicit-def dead %x12, 12, implicit-def dead %x13, 12, implicit-def dead %x14, 12, implicit-def dead %x15, 12, implicit-def dead %x16, 12, implicit-def dead %x17, 12, implicit-def dead %x18, 12, implicit-def dead %x19, 12, implicit-def dead %x20, 12, implicit-def dead %x21, 12, implicit-def dead %x22, 12, implicit-def dead %x23, 12, implicit-def dead %x24, 12, implicit-def dead %x25, 12, implicit-def dead %x26, 12, implicit-def dead %x27, 12, implicit-def dead %x28, 12, implicit-def dead %fp, 12, implicit-def dead %lr, 12, implicit-def %sp |
| ; CHECK: undef %1.sub_32:gpr64 = LDRWui %stack.0, 0 :: (load 4 from %stack.0) |
| undef %1.sub_32 = COPY %0 |
| %x0 = COPY %1 |
| RET_ReallyLR implicit %x0 |
| ... |
| --- |
| # CHECK-LABEL: name: test_subreg_fill_fold2 |
| # Similar to test_subreg_fill_fold, but with a cross-class copy. |
| name: test_subreg_fill_fold2 |
| registers: |
| - { id: 0, class: gpr32 } |
| - { id: 1, class: fpr64 } |
| body: | |
| bb.0: |
| %0 = COPY %wzr |
| INLINEASM $nop, 1, 12, implicit-def dead %x0, 12, implicit-def dead %x1, 12, implicit-def dead %x2, 12, implicit-def dead %x3, 12, implicit-def dead %x4, 12, implicit-def dead %x5, 12, implicit-def dead %x6, 12, implicit-def dead %x7, 12, implicit-def dead %x8, 12, implicit-def dead %x9, 12, implicit-def dead %x10, 12, implicit-def dead %x11, 12, implicit-def dead %x12, 12, implicit-def dead %x13, 12, implicit-def dead %x14, 12, implicit-def dead %x15, 12, implicit-def dead %x16, 12, implicit-def dead %x17, 12, implicit-def dead %x18, 12, implicit-def dead %x19, 12, implicit-def dead %x20, 12, implicit-def dead %x21, 12, implicit-def dead %x22, 12, implicit-def dead %x23, 12, implicit-def dead %x24, 12, implicit-def dead %x25, 12, implicit-def dead %x26, 12, implicit-def dead %x27, 12, implicit-def dead %x28, 12, implicit-def dead %fp, 12, implicit-def dead %lr, 12, implicit-def %sp |
| ; CHECK: undef %1.ssub:fpr64 = LDRSui %stack.0, 0 :: (load 4 from %stack.0) |
| undef %1.ssub = COPY %0 |
| %d0 = COPY %1 |
| RET_ReallyLR implicit %d0 |
| ... |