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Fix pr18515.

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My understanding (from reading just the llvm code) is that
* most ppc cpus have a "sync n" instruction and an msync alias that is "sync 0".
* "book e" cpus instead have a msync instruction and not the more
general "sync n"

This patch reflects that in the .td files, allowing a single codepath for
asm ond obj streamer and incidentelly fixes a crash when EmitRawText was
called on a obj streamer.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@199832 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola 2014-01-22 20:20:52 +00:00
parent 8b594ba851
commit ff16685a80
2 changed files with 18 additions and 14 deletions
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7
lib/Target/PowerPC/PPCAsmPrinter.cpp
View File

@ -697,13 +697,6 @@ void PPCAsmPrinter::EmitInstruction(const MachineInstr *MI) {
return;
}
break;
case PPC::SYNC:
// In Book E sync is called msync, handle this special case here...
if (Subtarget.isBookE()) {
OutStreamer.EmitRawText(StringRef("\tmsync"));
return;
}
break;
case PPC::LD:
case PPC::STD:
case PPC::LWA_32:

25
lib/Target/PowerPC/PPCInstrInfo.td
View File

@ -599,6 +599,7 @@ def iaddroff : ComplexPattern<iPTR, 1, "SelectAddrImmOffs", [], []>;
def In32BitMode : Predicate<"!PPCSubTarget.isPPC64()">;
def In64BitMode : Predicate<"PPCSubTarget.isPPC64()">;
def IsBookE : Predicate<"PPCSubTarget.isBookE()">;
def IsNotBookE : Predicate<"!PPCSubTarget.isBookE()">;
//===----------------------------------------------------------------------===//
// PowerPC Multiclass Definitions.
@ -1550,8 +1551,17 @@ def STMW : DForm_1<47, (outs), (ins gprc:$rS, memri:$dst),
"stmw $rS, $dst", IIC_LdStLMW, []>;
def SYNC : XForm_24_sync<31, 598, (outs), (ins i32imm:$L),
"sync $L", IIC_LdStSync, []>;
def : Pat<(int_ppc_sync), (SYNC 0)>;
"sync $L", IIC_LdStSync, []>, Requires<[IsNotBookE]>;
let isCodeGenOnly = 1 in {
def MSYNC : XForm_24_sync<31, 598, (outs), (ins),
"msync", IIC_LdStSync, []>, Requires<[IsBookE]> {
let L = 0;
}
}
def : Pat<(int_ppc_sync), (SYNC 0)>, Requires<[IsNotBookE]>;
def : Pat<(int_ppc_sync), (MSYNC)>, Requires<[IsBookE]>;
//===----------------------------------------------------------------------===//
// PPC32 Arithmetic Instructions.
@ -2318,7 +2328,8 @@ def : Pat<(f64 (extloadf32 xaddr:$src)),
def : Pat<(f64 (fextend f32:$src)),
(COPY_TO_REGCLASS $src, F8RC)>;
def : Pat<(atomic_fence (imm), (imm)), (SYNC 0)>;
def : Pat<(atomic_fence (imm), (imm)), (SYNC 0)>, Requires<[IsNotBookE]>;
def : Pat<(atomic_fence (imm), (imm)), (MSYNC)>, Requires<[IsBookE]>;
// Additional FNMSUB patterns: -a*c + b == -(a*c - b)
def : Pat<(fma (fneg f64:$A), f64:$C, f64:$B),
@ -2407,10 +2418,10 @@ class PPCAsmPseudo<string asm, dag iops>
def : InstAlias<"sc", (SC 0)>;
def : InstAlias<"sync", (SYNC 0)>;
def : InstAlias<"msync", (SYNC 0)>;
def : InstAlias<"lwsync", (SYNC 1)>;
def : InstAlias<"ptesync", (SYNC 2)>;
def : InstAlias<"sync", (SYNC 0)>, Requires<[IsNotBookE]>;
def : InstAlias<"msync", (SYNC 0)>, Requires<[IsNotBookE]>;
def : InstAlias<"lwsync", (SYNC 1)>, Requires<[IsNotBookE]>;
def : InstAlias<"ptesync", (SYNC 2)>, Requires<[IsNotBookE]>;
def : InstAlias<"wait", (WAIT 0)>;
def : InstAlias<"waitrsv", (WAIT 1)>;