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[X86][Btver2] TZCNT instructions take 2uops not 1 

llvm-svn: 343200
This commit is contained in:
Simon Pilgrim 2018-09-27 12:28:47 +00:00
parent 7dd69f15e1
commit 98f503a326
2 changed files with 5 additions and 5 deletions
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2
llvm/lib/Target/X86/X86ScheduleBtVer2.td
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@ -210,7 +210,7 @@ defm : JWriteResIntPair<WriteBSF, [JALU01], 5, [4], 8>;
defm : JWriteResIntPair<WriteBSR, [JALU01], 5, [4], 8>;
defm : JWriteResIntPair<WritePOPCNT, [JALU01], 1>;
defm : JWriteResIntPair<WriteLZCNT, [JALU01], 1>;
defm : JWriteResIntPair<WriteTZCNT, [JALU01], 2, [2]>;
defm : JWriteResIntPair<WriteTZCNT, [JALU01], 2, [2], 2>;
// BMI1 BEXTR/BLS, BMI2 BZHI
defm : JWriteResIntPair<WriteBEXTR, [JALU01], 1>;

8
llvm/test/tools/llvm-mca/X86/BtVer2/resources-bmi1.s
View File

@ -66,10 +66,10 @@ tzcnt (%rax), %rcx
# CHECK-NEXT: 1 5 1.00 * blsrl (%rax), %ecx
# CHECK-NEXT: 1 2 1.00 blsrq %rax, %rcx
# CHECK-NEXT: 1 5 1.00 * blsrq (%rax), %rcx
# CHECK-NEXT: 1 2 1.00 tzcntl %eax, %ecx
# CHECK-NEXT: 1 5 1.00 * tzcntl (%rax), %ecx
# CHECK-NEXT: 1 2 1.00 tzcntq %rax, %rcx
# CHECK-NEXT: 1 5 1.00 * tzcntq (%rax), %rcx
# CHECK-NEXT: 2 2 1.00 tzcntl %eax, %ecx
# CHECK-NEXT: 2 5 1.00 * tzcntl (%rax), %ecx
# CHECK-NEXT: 2 2 1.00 tzcntq %rax, %rcx
# CHECK-NEXT: 2 5 1.00 * tzcntq (%rax), %rcx
# CHECK: Resources:
# CHECK-NEXT: [0] - JALU0