[llvm] a6686aa - [X86] Remove unnecessary RDPMC/RDTSC instruction overrides from znver1/znver2 models

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2022-11-20T13:19:49Z
New Revision: a6686aae38c599f9e90dc9374fb5b4cb1710b6c6

URL: https://github.com/llvm/llvm-project/commit/a6686aae38c599f9e90dc9374fb5b4cb1710b6c6
DIFF: https://github.com/llvm/llvm-project/commit/a6686aae38c599f9e90dc9374fb5b4cb1710b6c6.diff

LOG: [X86] Remove unnecessary RDPMC/RDTSC instruction overrides from znver1/znver2 models

Reported by D138359

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86ScheduleZnver1.td
    llvm/lib/Target/X86/X86ScheduleZnver2.td

Removed: 
    


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diff  --git a/llvm/lib/Target/X86/X86ScheduleZnver1.td b/llvm/lib/Target/X86/X86ScheduleZnver1.td
index bfb68ba3f620..e7516371ab94 100644
--- a/llvm/lib/Target/X86/X86ScheduleZnver1.td
+++ b/llvm/lib/Target/X86/X86ScheduleZnver1.td
@@ -755,12 +755,6 @@ def : InstRW<[ZnWriteLEAVE], (instregex "LEAVE")>;
 // PAUSE.
 def : InstRW<[WriteMicrocoded], (instrs PAUSE)>;
 
-// RDTSC.
-def : InstRW<[WriteMicrocoded], (instregex "RDTSC")>;
-
-// RDPMC.
-def : InstRW<[WriteMicrocoded], (instrs RDPMC)>;
-
 // RDRAND.
 def : InstRW<[WriteMicrocoded], (instrs RDRAND16r, RDRAND32r, RDRAND64r)>;
 

diff  --git a/llvm/lib/Target/X86/X86ScheduleZnver2.td b/llvm/lib/Target/X86/X86ScheduleZnver2.td
index 0a0243d10c04..c6a066075ecd 100644
--- a/llvm/lib/Target/X86/X86ScheduleZnver2.td
+++ b/llvm/lib/Target/X86/X86ScheduleZnver2.td
@@ -765,12 +765,6 @@ def : InstRW<[Zn2WriteLEAVE], (instregex "LEAVE")>;
 // PAUSE.
 def : InstRW<[WriteMicrocoded], (instrs PAUSE)>;
 
-// RDTSC.
-def : InstRW<[WriteMicrocoded], (instregex "RDTSC")>;
-
-// RDPMC.
-def : InstRW<[WriteMicrocoded], (instrs RDPMC)>;
-
 // RDRAND.
 def : InstRW<[WriteMicrocoded], (instregex "RDRAND(16|32|64)r")>;