[PATCH] D78583: [RISCV] Add instruction definition for dret
Pengxuan Zheng via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Apr 23 11:53:12 PDT 2020
pzheng updated this revision to Diff 259645.
pzheng added a comment.
Reverted changes in priv-valid.s
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D78583/new/
https://reviews.llvm.org/D78583
Files:
llvm/lib/Target/RISCV/RISCVInstrInfo.td
llvm/test/MC/RISCV/debug-valid.s
Index: llvm/test/MC/RISCV/debug-valid.s
===================================================================
--- /dev/null
+++ llvm/test/MC/RISCV/debug-valid.s
@@ -0,0 +1,14 @@
+# RUN: llvm-mc %s -triple=riscv32 -riscv-no-aliases -show-encoding \
+# RUN: | FileCheck -check-prefixes=CHECK,CHECK-INST %s
+# RUN: llvm-mc %s -triple=riscv64 -riscv-no-aliases -show-encoding \
+# RUN: | FileCheck -check-prefixes=CHECK,CHECK-INST %s
+# RUN: llvm-mc -filetype=obj -triple riscv32 < %s \
+# RUN: | llvm-objdump -M no-aliases -d - \
+# RUN: | FileCheck -check-prefix=CHECK-INST %s
+# RUN: llvm-mc -filetype=obj -triple riscv64 < %s \
+# RUN: | llvm-objdump -M no-aliases -d - \
+# RUN: | FileCheck -check-prefix=CHECK-INST %s
+
+# CHECK-INST: dret
+# CHECK: encoding: [0x73,0x00,0x20,0x7b]
+dret
Index: llvm/lib/Target/RISCV/RISCVInstrInfo.td
===================================================================
--- llvm/lib/Target/RISCV/RISCVInstrInfo.td
+++ llvm/lib/Target/RISCV/RISCVInstrInfo.td
@@ -588,6 +588,18 @@
let rd = 0;
}
+//===----------------------------------------------------------------------===//
+// Debug instructions
+//===----------------------------------------------------------------------===//
+
+let isBarrier = 1, isReturn = 1, isTerminator = 1 in {
+def DRET : Priv<"dret", 0b0111101>, Sched<[]> {
+ let rd = 0;
+ let rs1 = 0;
+ let rs2 = 0b10010;
+}
+} // isBarrier = 1, isReturn = 1, isTerminator = 1
+
//===----------------------------------------------------------------------===//
// Assembler Pseudo Instructions (User-Level ISA, Version 2.2, Chapter 20)
//===----------------------------------------------------------------------===//
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