| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| # RUN: llc -mtriple aarch64-apple-ios -run-pass=aarch64-postlegalizer-combiner --aarch64postlegalizercombinerhelper-only-enable-rule="ptr_add_immed_chain" %s -o - -verify-machineinstrs | FileCheck %s |
| # REQUIRES: asserts |
| |
| # Check that we fold two adds of constant offsets with G_PTR_ADD into a single G_PTR_ADD. |
| --- |
| name: ptradd_chain |
| tracksRegLiveness: true |
| legalized: true |
| body: | |
| bb.1: |
| liveins: $x0 |
| |
| ; CHECK-LABEL: name: ptradd_chain |
| ; CHECK: liveins: $x0 |
| ; CHECK: [[COPY:%[0-9]+]]:_(p0) = COPY $x0 |
| ; CHECK: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 16 |
| ; CHECK: [[PTR_ADD:%[0-9]+]]:_(p0) = G_PTR_ADD [[COPY]], [[C]](s64) |
| ; CHECK: $x0 = COPY [[PTR_ADD]](p0) |
| ; CHECK: RET_ReallyLR implicit $x0 |
| %0:_(p0) = COPY $x0 |
| %1:_(s64) = G_CONSTANT i64 4 |
| %2:_(s64) = G_CONSTANT i64 12 |
| %3:_(p0) = G_PTR_ADD %0(p0), %1 |
| %4:_(p0) = G_PTR_ADD %3(p0), %2 |
| $x0 = COPY %4(p0) |
| RET_ReallyLR implicit $x0 |
| ... |