[PATCH] D77966: [llvm][MIRVRegNamer] Avoid collisions across jump table indices.
Puyan Lotfi via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 22 12:31:12 PDT 2020
This revision was automatically updated to reflect the committed changes.
Closed by commit rG264c07ef7766: [llvm][MIRVRegNamer] Avoid collisions across jump table indices. (authored by plotfi).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D77966/new/
https://reviews.llvm.org/D77966
Files:
llvm/lib/CodeGen/MIRVRegNamerUtils.cpp
llvm/test/CodeGen/MIR/AArch64/mir-canon-jump-table.mir
Index: llvm/test/CodeGen/MIR/AArch64/mir-canon-jump-table.mir
===================================================================
--- /dev/null
+++ llvm/test/CodeGen/MIR/AArch64/mir-canon-jump-table.mir
@@ -0,0 +1,33 @@
+# RUN: llc -run-pass mir-canonicalizer -verify-machineinstrs -mtriple aarch64-unknown-linux-gnu -o - %s | FileCheck %s
+...
+---
+name: foo
+alignment: 16
+jumpTable:
+ kind: block-address
+ entries:
+ - id: 0
+ blocks: [ '%bb.0', '%bb.1']
+ - id: 1
+ blocks: [ '%bb.2', '%bb.3' ]
+ - id: 2
+ blocks: [ '%bb.3', '%bb.7']
+ - id: 3
+ blocks: [ '%bb.2', '%bb.3' ]
+body: |
+ bb.0:
+ bb.1:
+ bb.2:
+ bb.3:
+ bb.7:
+ ;CHECK: %bb{{[0-9]+}}_{{[0-9]+}}__1:_(p0) = G_JUMP_TABLE %jump-table.0
+ ;CHECK: %bb{{[0-9]+}}_{{[0-9]+}}__1:_(p0) = G_JUMP_TABLE %jump-table.1
+ ;CHECK: %bb{{[0-9]+}}_{{[0-9]+}}__1:_(p0) = G_JUMP_TABLE %jump-table.2
+ ;CHECK: %bb{{[0-9]+}}_{{[0-9]+}}__1:_(p0) = G_JUMP_TABLE %jump-table.3
+ %a:_(p0) = G_JUMP_TABLE %jump-table.0
+ %b:_(p0) = G_JUMP_TABLE %jump-table.1
+ %c:_(p0) = G_JUMP_TABLE %jump-table.2
+ %d:_(p0) = G_JUMP_TABLE %jump-table.3
+
+...
+
Index: llvm/lib/CodeGen/MIRVRegNamerUtils.cpp
===================================================================
--- llvm/lib/CodeGen/MIRVRegNamerUtils.cpp
+++ llvm/lib/CodeGen/MIRVRegNamerUtils.cpp
@@ -72,6 +72,7 @@
return MO.getOffset() | (MO.getTargetFlags() << 16);
case MachineOperand::MO_FrameIndex:
case MachineOperand::MO_ConstantPoolIndex:
+ case MachineOperand::MO_JumpTableIndex:
return llvm::hash_value(MO);
// We could explicitly handle all the types of the MachineOperand,
@@ -82,7 +83,6 @@
// TODO: Handle the following Index/ID/Predicate cases. They can
// be hashed on in a stable manner.
- case MachineOperand::MO_JumpTableIndex:
case MachineOperand::MO_CFIIndex:
case MachineOperand::MO_IntrinsicID:
case MachineOperand::MO_Predicate:
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