| # RUN: not llc -mtriple=aarch64-- -run-pass=legalizer %s -o - 2>&1 | FileCheck %s |
| # REQUIRES: asserts |
| |
| # This is to demonstrate what kind of bugs we're missing w/o some kind |
| # of validation for LegalizerInfo: G_INTTOPTR could only be legal / |
| # could be legalized if its destination operand has a pointer type and |
| # its source - a scalar type. This is reversed in this test and the |
| # legalizer is expected to fail on it with an appropriate error |
| # message. Prior to LegalizerInfo::verify AArch64 legalizer had a |
| # subtle bug in its definition that caused it to accept the following |
| # MIR as legal. Namely, it checked that type index 0 is either s64 or |
| # p0 (in that order) and implicitly declared any type for type index 1 |
| # as legal. As LegalizerInfo::verify asserts on such a definition due |
| # to type index 1 not being covered it forces to review the definition |
| # and fix the mistake: check that type index 0 is p0 and type index 1 |
| # is s64 (in that order). |
| |
| # CHECK: LLVM ERROR: unable to legalize instruction: |
| # CHECK-SAME: %{{[0-9]+}}:_(s64) = G_INTTOPTR %{{[0-9]+}}:_(p0) |
| # CHECK-SAME: (in function: broken) |
| |
| --- |
| name: broken |
| alignment: 2 |
| tracksRegLiveness: true |
| registers: |
| - { id: 0, class: _ } |
| - { id: 1, class: _ } |
| body: | |
| bb.1: |
| liveins: $x0 |
| |
| %0:_(p0) = COPY $x0 |
| %1:_(s64) = G_INTTOPTR %0(p0) |
| $x0 = COPY %1(s64) |
| RET_ReallyLR implicit $x0 |
| |
| ... |