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Pull in r200130 from upstream llvm trunk (by Jakob Stoklund Olesen):
Fix swapped CASA operands.
Found by SingleSource/UnitTests/AtomicOps.c
Introduced here: http://svnweb.freebsd.org/changeset/base/262261
Index: lib/Target/Sparc/SparcISelLowering.cpp
===================================================================
--- lib/Target/Sparc/SparcISelLowering.cpp
+++ lib/Target/Sparc/SparcISelLowering.cpp
@@ -2972,7 +2972,7 @@ SparcTargetLowering::expandAtomicRMW(MachineInstr
// loop:
// %val = phi %val0, %dest
// %upd = op %val, %rs2
- // %dest = cas %addr, %upd, %val
+ // %dest = cas %addr, %val, %upd
// cmp %val, %dest
// bne loop
// done:
@@ -3031,7 +3031,7 @@ SparcTargetLowering::expandAtomicRMW(MachineInstr
}
BuildMI(LoopMBB, DL, TII.get(is64Bit ? SP::CASXrr : SP::CASrr), DestReg)
- .addReg(AddrReg).addReg(UpdReg).addReg(ValReg)
+ .addReg(AddrReg).addReg(ValReg).addReg(UpdReg)
.setMemRefs(MI->memoperands_begin(), MI->memoperands_end());
BuildMI(LoopMBB, DL, TII.get(SP::CMPrr)).addReg(ValReg).addReg(DestReg);
BuildMI(LoopMBB, DL, TII.get(is64Bit ? SP::BPXCC : SP::BCOND))
Index: test/CodeGen/SPARC/atomics.ll
===================================================================
--- test/CodeGen/SPARC/atomics.ll
+++ test/CodeGen/SPARC/atomics.ll
@@ -64,8 +64,8 @@ entry:
; CHECK-LABEL: test_load_add_32
; CHECK: membar
-; CHECK: add
-; CHECK: cas [%o0]
+; CHECK: add [[V:%[gilo][0-7]]], %o1, [[U:%[gilo][0-7]]]
+; CHECK: cas [%o0], [[V]], [[U]]
; CHECK: membar
define zeroext i32 @test_load_add_32(i32* %p, i32 zeroext %v) {
entry:
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