aa81e92d88
- [Sparc] Add mnemonic aliases for flush, stb, stba, sth, and stha - [Sparc] Add membar assembler tags from Brad (maintainer)
60 lines
2.3 KiB
Plaintext
60 lines
2.3 KiB
Plaintext
$OpenBSD: patch-lib_Target_Sparc_SparcInstrInfo_td,v 1.7 2018/11/14 09:07:41 ajacoutot Exp $
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- [Sparc] allow tls_add/tls_call syntax in assembler parser
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- [Sparc] Add membar assembler tags
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- [Sparc] Use synthetic instruction clr to zero register instead of sethi
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Using `clr reg`/`mov %g0, reg`/`or %g0, %g0, reg` to zero a register
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looks much better than `sethi 0, reg`.
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Index: lib/Target/Sparc/SparcInstrInfo.td
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--- lib/Target/Sparc/SparcInstrInfo.td.orig
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+++ lib/Target/Sparc/SparcInstrInfo.td
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@@ -121,6 +121,16 @@ def MEMri : Operand<iPTR> {
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def TLSSym : Operand<iPTR>;
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+def SparcMembarTagAsmOperand : AsmOperandClass {
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+ let Name = "MembarTag";
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+ let ParserMethod = "parseMembarTag";
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+}
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+
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+def MembarTag : Operand<i32> {
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+ let PrintMethod = "printMembarTag";
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+ let ParserMatchClass = SparcMembarTagAsmOperand;
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+}
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+
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// Branch targets have OtherVT type.
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def brtarget : Operand<OtherVT> {
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let EncoderMethod = "getBranchTargetOpValue";
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@@ -1313,7 +1323,7 @@ let Defs = [FCC0], rd = 0, isCodeGenOnly = 1 in {
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//===----------------------------------------------------------------------===//
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// Instructions for Thread Local Storage(TLS).
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//===----------------------------------------------------------------------===//
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-let isCodeGenOnly = 1, isAsmParserOnly = 1 in {
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+let isAsmParserOnly = 1 in {
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def TLS_ADDrr : F3_1<2, 0b000000,
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(outs IntRegs:$rd),
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(ins IntRegs:$rs1, IntRegs:$rs2, TLSSym:$sym),
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@@ -1508,8 +1518,8 @@ def : Pat<(ctpop i32:$src),
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(POPCrr (SRLri $src, 0))>;
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let Predicates = [HasV9], hasSideEffects = 1, rd = 0, rs1 = 0b01111 in
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- def MEMBARi : F3_2<2, 0b101000, (outs), (ins simm13Op:$simm13),
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- "membar $simm13", []>;
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+ def MEMBARi : F3_2<2, 0b101000, (outs), (ins MembarTag:$tag),
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+ "membar $tag", []>;
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// The CAS instruction, unlike other instructions, only comes in a
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// form which requires an ASI be provided. The ASI value hardcoded
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@@ -1599,6 +1609,9 @@ let Predicates = [HasV9] in {
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// Non-Instruction Patterns
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//===----------------------------------------------------------------------===//
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+// Zero immediate.
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+def : Pat<(i32 0),
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+ (ORrr (i32 G0), (i32 G0))>;
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// Small immediates.
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def : Pat<(i32 simm13:$val),
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(ORri (i32 G0), imm:$val)>;
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