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| author | Joey Gouly <joey.gouly@arm.com> | 2013-08-13 16:40:47 +0000 |
|---|---|---|
| committer | Joey Gouly <joey.gouly@arm.com> | 2013-08-13 16:40:47 +0000 |
| commit | 9960e764aafdd56f43ac74345eed3aabfba0d3fb (patch) | |
| tree | 6fdfeb7430b9ae53474fd09e935c80efd2d4ca1c | |
| parent | f59b1a92119b4fa04c1f981bde9a97546c46f797 (diff) | |
| download | bcm5719-llvm-9960e764aafdd56f43ac74345eed3aabfba0d3fb.tar.gz bcm5719-llvm-9960e764aafdd56f43ac74345eed3aabfba0d3fb.zip | |
ARMv8: SWP and SWPB are obsoleted on ARMv8.
llvm-svn: 188288
| -rw-r--r-- | llvm/lib/Target/ARM/ARMInstrInfo.td | 8 | ||||
| -rw-r--r-- | llvm/test/MC/ARM/obsolete-v8.s | 7 |
2 files changed, 13 insertions, 2 deletions
diff --git a/llvm/lib/Target/ARM/ARMInstrInfo.td b/llvm/lib/Target/ARM/ARMInstrInfo.td index c2434023f8f..280757fb37d 100644 --- a/llvm/lib/Target/ARM/ARMInstrInfo.td +++ b/llvm/lib/Target/ARM/ARMInstrInfo.td @@ -196,6 +196,8 @@ def HasV7 : Predicate<"Subtarget->hasV7Ops()">, AssemblerPredicate<"HasV7Ops", "armv7">; def HasV8 : Predicate<"Subtarget->hasV8Ops()">, AssemblerPredicate<"HasV8Ops", "armv8">; +def PreV8 : Predicate<"!Subtarget->hasV8Ops()">, + AssemblerPredicate<"!HasV8Ops", "armv7 or earlier">; def NoVFP : Predicate<"!Subtarget->hasVFP2()">; def HasVFP2 : Predicate<"Subtarget->hasVFP2()">, AssemblerPredicate<"FeatureVFP2", "VFP2">; @@ -4455,9 +4457,11 @@ def : ARMPat<(strex_2 (and GPR:$Rt, 0xffff), addr_offset_none:$addr), // SWP/SWPB are deprecated in V6/V7. let mayLoad = 1, mayStore = 1 in { def SWP : AIswp<0, (outs GPRnopc:$Rt), - (ins GPRnopc:$Rt2, addr_offset_none:$addr), "swp", []>; + (ins GPRnopc:$Rt2, addr_offset_none:$addr), "swp", []>, + Requires<[PreV8]>; def SWPB: AIswp<1, (outs GPRnopc:$Rt), - (ins GPRnopc:$Rt2, addr_offset_none:$addr), "swpb", []>; + (ins GPRnopc:$Rt2, addr_offset_none:$addr), "swpb", []>, + Requires<[PreV8]>; } //===----------------------------------------------------------------------===// diff --git a/llvm/test/MC/ARM/obsolete-v8.s b/llvm/test/MC/ARM/obsolete-v8.s new file mode 100644 index 00000000000..0d6176b3dd1 --- /dev/null +++ b/llvm/test/MC/ARM/obsolete-v8.s @@ -0,0 +1,7 @@ +@ RUN: not llvm-mc -triple=armv8 < %s 2>&1 | FileCheck %s + +swp r0, r1, [r2] +@ CHECK: instruction requires: armv7 or earlier + +swpb r0, r1, [r2] +@ CHECK: instruction requires: armv7 or earlier |
