diff options
Diffstat (limited to 'test/CodeGen/AArch64/ldst-opt.mir')
| -rw-r--r-- | test/CodeGen/AArch64/ldst-opt.mir | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/test/CodeGen/AArch64/ldst-opt.mir b/test/CodeGen/AArch64/ldst-opt.mir index f7641d3ffd04..9cb9528cc62e 100644 --- a/test/CodeGen/AArch64/ldst-opt.mir +++ b/test/CodeGen/AArch64/ldst-opt.mir @@ -34,7 +34,7 @@ body: | # Don't count transient instructions towards search limits. # CHECK-LABEL: name: promote-load-from-store # CHECK: STRWui %w1 -# CHECK: UBFMWri %w1 +# CHECK: UBFMWri killed %w1 --- name: store-pair tracksRegLiveness: true @@ -144,3 +144,40 @@ body: | # CHECK: %wzr = COPY %w1 # CHECK: %w11 = ORRWrs %wzr, %w1, 0 # CHECK: HINT 0, implicit %w11 +--- +name: promote-load-from-store-undef +tracksRegLiveness: true +body: | + bb.0: + liveins: %x0, %x2, %lr + + STRWui undef %w1, %x0, 0 :: (store 4) + %w0 = LDRBBui %x0, 1 :: (load 2) + STRHHui undef %w3, %x2, 0 :: (store 4) + %w1 = LDRBBui %x2, 0 :: (load 4) + RET %lr, implicit %w0 +... +# CHECK-LABEL: name: promote-load-from-store-undef +# CHECK: STRWui undef %w1 +# CHECK: UBFMWri undef %w1 +# CHECK: STRHHui undef %w3 +# CHECK: ANDWri undef %w3 +--- +name: promote-load-from-store-trivial-kills +tracksRegLiveness: true +body: | + bb.0: + liveins: %x0, %lr + + STRXui %x0, %sp, 0 :: (store 8) + STRXui killed %x0, %sp, 2 :: (store 8) + %x0 = LDRXui %sp, 0 :: (load 8) + BL $bar, csr_aarch64_aapcs, implicit-def %lr, implicit %sp, implicit %x0, implicit-def %sp + RET %lr +... +# CHECK-LABEL: name: promote-load-from-store-trivial-kills +# CHECK: STRXui %x0, %sp, 0 +# CHECK: STRXui %x0, %sp, 2 +# CHECK-NOT: LDRXui +# CHECK-NOT: ORR +# CHECK: BL $bar, csr_aarch64_aapcs, implicit-def %lr, implicit %sp, implicit %x0, implicit-def %sp |