[PATCH] D154762: [LoongArch] Implement isLegalAddImmediate
hev via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Sun Jul 9 19:22:50 PDT 2023
hev updated this revision to Diff 538492.
hev added a comment.
Rebase and update test case.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D154762/new/
https://reviews.llvm.org/D154762
Files:
llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
llvm/lib/Target/LoongArch/LoongArchISelLowering.h
llvm/test/CodeGen/LoongArch/lsr-legaladdimm.ll
Index: llvm/test/CodeGen/LoongArch/lsr-legaladdimm.ll
===================================================================
--- llvm/test/CodeGen/LoongArch/lsr-legaladdimm.ll
+++ llvm/test/CodeGen/LoongArch/lsr-legaladdimm.ll
@@ -4,8 +4,7 @@
define i32 @lsr_addimm(i32 %x, i32 %y) {
; CHECK-LABEL: lsr_addimm:
; CHECK: # %bb.0:
-; CHECK-NEXT: ori $a2, $zero, 4095
-; CHECK-NEXT: add.d $a0, $a0, $a2
+; CHECK-NEXT: addi.d $a0, $a0, -1
; CHECK-NEXT: bstrpick.d $a1, $a1, 31, 20
; CHECK-NEXT: and $a0, $a1, $a0
; CHECK-NEXT: ret
Index: llvm/lib/Target/LoongArch/LoongArchISelLowering.h
===================================================================
--- llvm/lib/Target/LoongArch/LoongArchISelLowering.h
+++ llvm/lib/Target/LoongArch/LoongArchISelLowering.h
@@ -202,6 +202,8 @@
unsigned AS,
Instruction *I = nullptr) const override;
+ bool isLegalAddImmediate(int64_t Imm) const override;
+
bool hasAndNotCompare(SDValue Y) const override;
bool convertSelectOfConstantsToMath(EVT VT) const override { return true; }
Index: llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
===================================================================
--- llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
+++ llvm/lib/Target/LoongArch/LoongArchISelLowering.cpp
@@ -3243,6 +3243,10 @@
return true;
}
+bool LoongArchTargetLowering::isLegalAddImmediate(int64_t Imm) const {
+ return isInt<12>(Imm);
+}
+
bool LoongArchTargetLowering::hasAndNotCompare(SDValue Y) const {
// TODO: Support vectors.
if (Y.getValueType().isVector())
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D154762.538492.patch
Type: text/x-patch
Size: 1634 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20230710/874efbe5/attachment.bin>
More information about the llvm-commits
mailing list