From 28f5ad5801d408b35afc437fb3c430104ee3ce3e Mon Sep 17 00:00:00 2001 From: Amara Emerson Date: Wed, 4 Dec 2019 17:01:07 -0800 Subject: [PATCH] [GlobalISel] Fix compiler crash lowering G_LOAD in AArch64. MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Patch by Daniel Rodríguez Troitiño. Differential Revision: https://reviews.llvm.org/D70794 --- llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp | 2 +- .../AArch64/GlobalISel/legalize-load-trunc.mir | 22 ++++++++++++++++++++++ 2 files changed, 23 insertions(+), 1 deletion(-) create mode 100644 llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-trunc.mir diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp index a9af31f882e..5e1d5d9b579 100644 --- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp +++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp @@ -2117,7 +2117,7 @@ LegalizerHelper::lower(MachineInstr &MI, unsigned TypeIdx, LLT Ty) { default: llvm_unreachable("Unexpected opcode"); case TargetOpcode::G_LOAD: - MIRBuilder.buildAnyExt(DstReg, TmpReg); + MIRBuilder.buildExtOrTrunc(TargetOpcode::G_ANYEXT, DstReg, TmpReg); break; case TargetOpcode::G_SEXTLOAD: MIRBuilder.buildSExt(DstReg, TmpReg); diff --git a/llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-trunc.mir b/llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-trunc.mir new file mode 100644 index 00000000000..2ee372ada08 --- /dev/null +++ b/llvm/test/CodeGen/AArch64/GlobalISel/legalize-load-trunc.mir @@ -0,0 +1,22 @@ +# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py +# RUN: llc -march=aarch64 -run-pass=legalizer %s -o - -verify-machineinstrs | FileCheck %s +--- +name: test_load_trunc +stack: + - { id: 0, type: default, offset: 0, size: 2, + alignment: 2, stack-id: default, callee-saved-register: '', callee-saved-restored: true, + debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } +body: | + bb.0.entry: + + ; CHECK-LABEL: name: test_load_trunc + ; CHECK: [[FRAME_INDEX:%[0-9]+]]:_(p0) = G_FRAME_INDEX %stack.0 + ; CHECK: [[LOAD:%[0-9]+]]:_(s16) = G_LOAD [[FRAME_INDEX]](p0) :: (load 2) + ; CHECK: [[TRUNC:%[0-9]+]]:_(s10) = G_TRUNC [[LOAD]](s16) + ; CHECK: [[TRUNC1:%[0-9]+]]:_(s1) = G_TRUNC [[TRUNC]](s10) + ; CHECK: RET_ReallyLR implicit [[TRUNC1]](s1) + %0:_(p0) = G_FRAME_INDEX %stack.0 + %1:_(s10) = G_LOAD %0(p0) :: (load 2) + %2:_(s1) = G_TRUNC %1(s10) + RET_ReallyLR implicit %2(s1) +... -- 2.11.0