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-rw-r--r--lib/Target/Alpha/AlphaInstrInfo.td9
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/Target/Alpha/AlphaInstrInfo.td b/lib/Target/Alpha/AlphaInstrInfo.td
index 474180f..6274a3e 100644
--- a/lib/Target/Alpha/AlphaInstrInfo.td
+++ b/lib/Target/Alpha/AlphaInstrInfo.td
@@ -568,8 +568,14 @@ def LDQl : MForm<0x29, 1, "ldq $RA,$DISP($RB)\t\t!literal",
def : Pat<(Alpha_rellit texternalsym:$ext, GPRC:$RB),
(LDQl texternalsym:$ext, GPRC:$RB)>;
-
def RPCC : MfcForm<0x18, 0xC000, "rpcc $RA", s_rpcc>; //Read process cycle counter
+def MB : MfcPForm<0x18, 0x4000, "mb", s_imisc>; //memory barrier
+def WMB : MfcPForm<0x18, 0x4400, "wmb", s_imisc>; //write memory barrier
+
+def : Pat<(membarrier (i64 imm:$ll), (i64 imm:$ls), (i64 imm:$sl), (i64 1), (i64 imm:$dev)),
+ (WMB)>;
+def : Pat<(membarrier (i64 imm:$ll), (i64 imm:$ls), (i64 imm:$sl), (i64 imm:$ss), (i64 imm:$dev)),
+ (MB)>;
//Basic Floating point ops
@@ -959,6 +965,7 @@ def : Pat<(brcond (setune F8RC:$RA, immFPZ), bb:$DISP),
//S_floating : IEEE Single
//T_floating : IEEE Double
+
//Unused instructions
//Mnemonic Format Opcode Description
//CALL_PAL Pcd 00 Trap to PALcode