[llvm] 16094cb - [llvm][LoongArch] Support per-global code model attribute for LoongArch (#72079)
via llvm-commits
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Fri Jan 5 21:36:13 PST 2024
Author: hev
Date: 2024-01-06T13:36:09+08:00
New Revision: 16094cb629159ee0896e2ca1facc15118b229665
URL: https://github.com/llvm/llvm-project/commit/16094cb629159ee0896e2ca1facc15118b229665
DIFF: https://github.com/llvm/llvm-project/commit/16094cb629159ee0896e2ca1facc15118b229665.diff
LOG: [llvm][LoongArch] Support per-global code model attribute for LoongArch (#72079)
This patch gets the code model from global variable attribute if it has,
otherwise the target's will be used.
---------
Signed-off-by: WANG Rui <wangrui at loongson.cn>
Added:
llvm/test/CodeGen/LoongArch/global-variable-code-model.ll
Modified:
llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
llvm/lib/Target/LoongArch/LoongArchISelLowering.h
Removed:
################################################################################
diff --git a/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp b/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
index 2cfb2c1d78117a..3e75b9fa5230e4 100644
--- a/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
+++ b/llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
@@ -762,12 +762,13 @@ static SDValue getTargetNode(JumpTableSDNode *N, SDLoc DL, EVT Ty,
template <class NodeTy>
SDValue LoongArchTargetLowering::getAddr(NodeTy *N, SelectionDAG &DAG,
+ CodeModel::Model M,
bool IsLocal) const {
SDLoc DL(N);
EVT Ty = getPointerTy(DAG.getDataLayout());
SDValue Addr = getTargetNode(N, DL, Ty, DAG, 0);
- switch (DAG.getTarget().getCodeModel()) {
+ switch (M) {
default:
report_fatal_error("Unsupported code model");
@@ -808,24 +809,35 @@ SDValue LoongArchTargetLowering::getAddr(NodeTy *N, SelectionDAG &DAG,
SDValue LoongArchTargetLowering::lowerBlockAddress(SDValue Op,
SelectionDAG &DAG) const {
- return getAddr(cast<BlockAddressSDNode>(Op), DAG);
+ return getAddr(cast<BlockAddressSDNode>(Op), DAG,
+ DAG.getTarget().getCodeModel());
}
SDValue LoongArchTargetLowering::lowerJumpTable(SDValue Op,
SelectionDAG &DAG) const {
- return getAddr(cast<JumpTableSDNode>(Op), DAG);
+ return getAddr(cast<JumpTableSDNode>(Op), DAG,
+ DAG.getTarget().getCodeModel());
}
SDValue LoongArchTargetLowering::lowerConstantPool(SDValue Op,
SelectionDAG &DAG) const {
- return getAddr(cast<ConstantPoolSDNode>(Op), DAG);
+ return getAddr(cast<ConstantPoolSDNode>(Op), DAG,
+ DAG.getTarget().getCodeModel());
}
SDValue LoongArchTargetLowering::lowerGlobalAddress(SDValue Op,
SelectionDAG &DAG) const {
GlobalAddressSDNode *N = cast<GlobalAddressSDNode>(Op);
assert(N->getOffset() == 0 && "unexpected offset in global node");
- return getAddr(N, DAG, N->getGlobal()->isDSOLocal());
+ auto CM = DAG.getTarget().getCodeModel();
+ const GlobalValue *GV = N->getGlobal();
+
+ if (GV->isDSOLocal() && isa<GlobalVariable>(GV)) {
+ if (auto GCM = dyn_cast<GlobalVariable>(GV)->getCodeModel())
+ CM = *GCM;
+ }
+
+ return getAddr(N, DAG, CM, GV->isDSOLocal());
}
SDValue LoongArchTargetLowering::getStaticTLSAddr(GlobalAddressSDNode *N,
diff --git a/llvm/lib/Target/LoongArch/LoongArchISelLowering.h b/llvm/lib/Target/LoongArch/LoongArchISelLowering.h
index 2875aa82e424de..72182623b2c3dd 100644
--- a/llvm/lib/Target/LoongArch/LoongArchISelLowering.h
+++ b/llvm/lib/Target/LoongArch/LoongArchISelLowering.h
@@ -254,7 +254,8 @@ class LoongArchTargetLowering : public TargetLowering {
LoongArchCCAssignFn Fn) const;
template <class NodeTy>
- SDValue getAddr(NodeTy *N, SelectionDAG &DAG, bool IsLocal = true) const;
+ SDValue getAddr(NodeTy *N, SelectionDAG &DAG, CodeModel::Model M,
+ bool IsLocal = true) const;
SDValue getStaticTLSAddr(GlobalAddressSDNode *N, SelectionDAG &DAG,
unsigned Opc, bool Large = false) const;
SDValue getDynamicTLSAddr(GlobalAddressSDNode *N, SelectionDAG &DAG,
diff --git a/llvm/test/CodeGen/LoongArch/global-variable-code-model.ll b/llvm/test/CodeGen/LoongArch/global-variable-code-model.ll
new file mode 100644
index 00000000000000..aa4780834ac3e8
--- /dev/null
+++ b/llvm/test/CodeGen/LoongArch/global-variable-code-model.ll
@@ -0,0 +1,44 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc --mtriple=loongarch64 < %s | FileCheck %s
+
+ at a= external dso_local global i32, code_model "small", align 4
+
+define dso_local signext i32 @local_small() #0 {
+; CHECK-LABEL: local_small:
+; CHECK: # %bb.0:
+; CHECK-NEXT: pcalau12i $a0, %pc_hi20(a)
+; CHECK-NEXT: addi.d $a0, $a0, %pc_lo12(a)
+; CHECK-NEXT: ld.w $a0, $a0, 0
+; CHECK-NEXT: ret
+ %1 = load i32, ptr @a, align 4
+ ret i32 %1
+}
+
+ at b= external dso_local global i32, code_model "large", align 4
+
+define dso_local signext i32 @local_large() #0 {
+; CHECK-LABEL: local_large:
+; CHECK: # %bb.0:
+; CHECK-NEXT: pcalau12i $a0, %pc_hi20(b)
+; CHECK-NEXT: addi.d $t8, $zero, %pc_lo12(b)
+; CHECK-NEXT: lu32i.d $t8, %pc64_lo20(b)
+; CHECK-NEXT: lu52i.d $t8, $t8, %pc64_hi12(b)
+; CHECK-NEXT: add.d $a0, $t8, $a0
+; CHECK-NEXT: ld.w $a0, $a0, 0
+; CHECK-NEXT: ret
+ %1 = load i32, ptr @b, align 4
+ ret i32 %1
+}
+
+ at c= external global i32, code_model "large", align 4
+
+define dso_local signext i32 @non_local_large() #0 {
+; CHECK-LABEL: non_local_large:
+; CHECK: # %bb.0:
+; CHECK-NEXT: pcalau12i $a0, %got_pc_hi20(c)
+; CHECK-NEXT: ld.d $a0, $a0, %got_pc_lo12(c)
+; CHECK-NEXT: ld.w $a0, $a0, 0
+; CHECK-NEXT: ret
+ %1 = load i32, ptr @c, align 4
+ ret i32 %1
+}
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