[X86] Remove PCOMMIT instruction support since Intel has deprecated this instruction with no plans to release products with it.

Intel's documentation for the deprecation https://software.intel.com/en-us/blogs/2016/09/12/deprecate-pcommit-instruction

llvm-svn: 294405

7 files changed, 2 insertions, 17 deletions

diff --git a/llvm/lib/Support/Host.cpp b/llvm/lib/Support/Host.cpp
index d1b40412a6f..881bb01ac93 100644
--- a/llvm/lib/Support/Host.cpp
+++ b/llvm/lib/Support/Host.cpp
@@ -1369,7 +1369,6 @@ bool sys::getHostCPUFeatures(StringMap<bool> &Features) {
   Features["rdseed"] = HasLeaf7 && ((EBX >> 18) & 1);
   Features["adx"] = HasLeaf7 && ((EBX >> 19) & 1);
   Features["smap"] = HasLeaf7 && ((EBX >> 20) & 1);
-  Features["pcommit"] = HasLeaf7 && ((EBX >> 22) & 1);
   Features["clflushopt"] = HasLeaf7 && ((EBX >> 23) & 1);
   Features["clwb"] = HasLeaf7 && ((EBX >> 24) & 1);
   Features["sha"] = HasLeaf7 && ((EBX >> 29) & 1);
diff --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index 83a23d4ad68..a547318a97d 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -225,8 +225,6 @@ def FeatureSGX     : SubtargetFeature<"sgx", "HasSGX", "true",
                                       "Enable Software Guard Extensions">;
 def FeatureCLFLUSHOPT : SubtargetFeature<"clflushopt", "HasCLFLUSHOPT", "true",
                                       "Flush A Cache Line Optimized">;
-def FeaturePCOMMIT : SubtargetFeature<"pcommit", "HasPCOMMIT", "true",
-                                      "Enable Persistent Commit">;
 def FeatureCLWB    : SubtargetFeature<"clwb", "HasCLWB", "true",
                                       "Cache Line Write Back">;
 // TODO: This feature ought to be renamed.
@@ -558,7 +556,6 @@ def SKXFeatures : ProcessorFeatures<SKLFeatures.Value, [
   FeatureBWI,
   FeatureVLX,
   FeaturePKU,
-  FeaturePCOMMIT,
   FeatureCLWB
 ]>;
 
diff --git a/llvm/lib/Target/X86/X86InstrInfo.td b/llvm/lib/Target/X86/X86InstrInfo.td
index cb6cc935de8..7087fe9dcd8 100644
--- a/llvm/lib/Target/X86/X86InstrInfo.td
+++ b/llvm/lib/Target/X86/X86InstrInfo.td
@@ -2532,7 +2532,6 @@ let Predicates = [HasTBM] in {
 def CLFLUSHOPT : I<0xAE, MRM7m, (outs), (ins i8mem:$src),
                    "clflushopt\t$src", [(int_x86_clflushopt addr:$src)]>, PD;
 def CLWB       : I<0xAE, MRM6m, (outs), (ins i8mem:$src), "clwb\t$src", []>, PD;
-def PCOMMIT    : I<0xAE, MRM_F8, (outs), (ins), "pcommit", []>, PD;
 
 
 //===----------------------------------------------------------------------===//
diff --git a/llvm/lib/Target/X86/X86Subtarget.h b/llvm/lib/Target/X86/X86Subtarget.h
index 721ef78b0e4..4ba556a0bcb 100644
--- a/llvm/lib/Target/X86/X86Subtarget.h
+++ b/llvm/lib/Target/X86/X86Subtarget.h
@@ -286,9 +286,6 @@ protected:
   /// Processor supports Flush Cache Line instruction
   bool HasCLFLUSHOPT;
 
-  /// Processor has Persistent Commit feature
-  bool HasPCOMMIT;
-
   /// Processor supports Cache Line Write Back instruction
   bool HasCLWB;
 
diff --git a/llvm/test/MC/Disassembler/X86/x86-32.txt b/llvm/test/MC/Disassembler/X86/x86-32.txt
index f92d6057877..01d21c5d0fc 100644
--- a/llvm/test/MC/Disassembler/X86/x86-32.txt
+++ b/llvm/test/MC/Disassembler/X86/x86-32.txt
@@ -517,9 +517,6 @@
 # CHECK: clwb (%eax)
 0x66 0x0f 0xae 0x30
 
-# CHECK: pcommit
-0x66 0x0f 0xae 0xf8
-
 # CHECK: vcvtph2ps %xmm0, %xmm0
 0xc4 0xe2 0x79 0x13 0xc0
 
diff --git a/llvm/test/MC/X86/x86-32-coverage.s b/llvm/test/MC/X86/x86-32-coverage.s
index 6dc91dc9d0e..c4f649ff4f4 100644
--- a/llvm/test/MC/X86/x86-32-coverage.s
+++ b/llvm/test/MC/X86/x86-32-coverage.s
@@ -10654,10 +10654,6 @@ btcq $4, (%eax)
 // CHECK:  encoding: [0x66,0x0f,0xae,0x35,0x78,0x56,0x34,0x12]
         	clwb	0x12345678
 
-// CHECK: pcommit
-// CHECK:  encoding: [0x66,0x0f,0xae,0xf8]
-        	pcommit
-
 // CHECK: xsave	3735928559(%ebx,%ecx,8)
 // CHECK:  encoding: [0x0f,0xae,0xa4,0xcb,0xef,0xbe,0xad,0xde]
         	xsave	0xdeadbeef(%ebx,%ecx,8)
diff --git a/llvm/test/Transforms/LoopVectorize/X86/int128_no_gather.ll b/llvm/test/Transforms/LoopVectorize/X86/int128_no_gather.ll
index fbea275cb40..4d7c0b6f64b 100644
--- a/llvm/test/Transforms/LoopVectorize/X86/int128_no_gather.ll
+++ b/llvm/test/Transforms/LoopVectorize/X86/int128_no_gather.ll
@@ -71,6 +71,6 @@ declare i32 @printf(i8*, ...) #1
 ; Function Attrs: nounwind
 declare i32 @puts(i8* nocapture readonly) #2
 
-attributes #0 = { noinline nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="skylake-avx512" "target-features"="+adx,+aes,+avx,+avx2,+avx512bw,+avx512cd,+avx512dq,+avx512f,+avx512vl,+bmi,+bmi2,+clflushopt,+clwb,+cx16,+f16c,+fma,+fsgsbase,+fxsr,+lzcnt,+mmx,+movbe,+mpx,+pclmul,+pcommit,+pku,+popcnt,+rdrnd,+rdseed,+rtm,+sgx,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave,+xsavec,+xsaveopt,+xsaves" "unsafe-fp-math"="false" "use-soft-float"="false" }
-attributes #1 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="skylake-avx512" "target-features"="+adx,+aes,+avx,+avx2,+avx512bw,+avx512cd,+avx512dq,+avx512f,+avx512vl,+bmi,+bmi2,+clflushopt,+clwb,+cx16,+f16c,+fma,+fsgsbase,+fxsr,+lzcnt,+mmx,+movbe,+mpx,+pclmul,+pcommit,+pku,+popcnt,+rdrnd,+rdseed,+rtm,+sgx,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave,+xsavec,+xsaveopt,+xsaves" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #0 = { noinline nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="skylake-avx512" "target-features"="+adx,+aes,+avx,+avx2,+avx512bw,+avx512cd,+avx512dq,+avx512f,+avx512vl,+bmi,+bmi2,+clflushopt,+clwb,+cx16,+f16c,+fma,+fsgsbase,+fxsr,+lzcnt,+mmx,+movbe,+mpx,+pclmul,+pku,+popcnt,+rdrnd,+rdseed,+rtm,+sgx,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave,+xsavec,+xsaveopt,+xsaves" "unsafe-fp-math"="false" "use-soft-float"="false" }
+attributes #1 = { nounwind "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="skylake-avx512" "target-features"="+adx,+aes,+avx,+avx2,+avx512bw,+avx512cd,+avx512dq,+avx512f,+avx512vl,+bmi,+bmi2,+clflushopt,+clwb,+cx16,+f16c,+fma,+fsgsbase,+fxsr,+lzcnt,+mmx,+movbe,+mpx,+pclmul,+pku,+popcnt,+rdrnd,+rdseed,+rtm,+sgx,+sse,+sse2,+sse3,+sse4.1,+sse4.2,+ssse3,+x87,+xsave,+xsavec,+xsaveopt,+xsaves" "unsafe-fp-math"="false" "use-soft-float"="false" }
 attributes #2 = { nounwind }