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Revert rL342916: [X86] Remove shift/rotate by CL memory (RMW) overrides 

As suggested by Craig Topper - I'm going to look at cleaning up the RMW sequences instead.

The uops are slightly different to the register variant, so requires a +1uop tweak

llvm-svn: 342969
This commit is contained in:
Simon Pilgrim 2018-09-25 13:01:26 +00:00
parent 0ea28c0e47
commit b56be79e0c
7 changed files with 97 additions and 43 deletions
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13
llvm/lib/Target/X86/X86SchedBroadwell.td
View File

@ -84,7 +84,7 @@ def : ReadAdvance<ReadAfterLd, 5>;
multiclass BWWriteResPair<X86FoldableSchedWrite SchedRW,
list<ProcResourceKind> ExePorts,
int Lat, list<int> Res = [1], int UOps = 1,
int LoadLat = 5, int LoadUOps = 1> {
int LoadLat = 5> {
// Register variant is using a single cycle on ExePort.
def : WriteRes<SchedRW, ExePorts> {
let Latency = Lat;
@ -97,7 +97,7 @@ multiclass BWWriteResPair<X86FoldableSchedWrite SchedRW,
def : WriteRes<SchedRW.Folded, !listconcat([BWPort23], ExePorts)> {
let Latency = !add(Lat, LoadLat);
let ResourceCycles = !listconcat([1], Res);
let NumMicroOps = !add(UOps, LoadUOps);
let NumMicroOps = !add(UOps, 1);
}
}
@ -173,9 +173,9 @@ defm : BWWriteResPair<WritePOPCNT, [BWPort1], 3>;
// Integer shifts and rotates.
defm : BWWriteResPair<WriteShift, [BWPort06], 1>;
defm : BWWriteResPair<WriteShiftCL, [BWPort06,BWPort0156], 3, [2,1], 3, 5, 2>;
defm : BWWriteResPair<WriteShiftCL, [BWPort06,BWPort0156], 3, [2,1], 3>;
defm : BWWriteResPair<WriteRotate, [BWPort06], 2, [2], 2>;
defm : BWWriteResPair<WriteRotateCL, [BWPort06,BWPort0156], 3, [2,1], 3, 5, 2>;
defm : BWWriteResPair<WriteRotateCL, [BWPort06,BWPort0156], 3, [2,1], 3>;
// SHLD/SHRD.
defm : X86WriteRes<WriteSHDrri, [BWPort1], 3, [1], 1>;
@ -1167,6 +1167,11 @@ def BWWriteResGroup100 : SchedWriteRes<[BWPort4,BWPort23,BWPort237,BWPort06,BWPo
let ResourceCycles = [1,1,1,2,1];
}
def : SchedAlias<WriteADCRMW, BWWriteResGroup100>;
def: InstRW<[BWWriteResGroup100], (instregex "ROL(8|16|32|64)mCL",
"ROR(8|16|32|64)mCL",
"SAR(8|16|32|64)mCL",
"SHL(8|16|32|64)mCL",
"SHR(8|16|32|64)mCL")>;
def BWWriteResGroup101 : SchedWriteRes<[BWPort1,BWPort23]> {
let Latency = 9;

13
llvm/lib/Target/X86/X86SchedHaswell.td
View File

@ -89,7 +89,7 @@ def : ReadAdvance<ReadAfterLd, 5>;
multiclass HWWriteResPair<X86FoldableSchedWrite SchedRW,
list<ProcResourceKind> ExePorts,
int Lat, list<int> Res = [1], int UOps = 1,
int LoadLat = 5, int LoadUOps = 1> {
int LoadLat = 5> {
// Register variant is using a single cycle on ExePort.
def : WriteRes<SchedRW, ExePorts> {
let Latency = Lat;
@ -102,7 +102,7 @@ multiclass HWWriteResPair<X86FoldableSchedWrite SchedRW,
def : WriteRes<SchedRW.Folded, !listconcat([HWPort23], ExePorts)> {
let Latency = !add(Lat, LoadLat);
let ResourceCycles = !listconcat([1], Res);
let NumMicroOps = !add(UOps, LoadUOps);
let NumMicroOps = !add(UOps, 1);
}
}
@ -144,9 +144,9 @@ defm : X86WriteRes<WriteXCHG, [HWPort0156], 2, [3], 3>;
// Integer shifts and rotates.
defm : HWWriteResPair<WriteShift, [HWPort06], 1>;
defm : HWWriteResPair<WriteShiftCL, [HWPort06, HWPort0156], 3, [2,1], 3, 6, 2>;
defm : HWWriteResPair<WriteShiftCL, [HWPort06, HWPort0156], 3, [2,1], 3>;
defm : HWWriteResPair<WriteRotate, [HWPort06], 2, [2], 2>;
defm : HWWriteResPair<WriteRotateCL, [HWPort06, HWPort0156], 3, [2,1], 3, 6, 2>;
defm : HWWriteResPair<WriteRotateCL, [HWPort06, HWPort0156], 3, [2,1], 3>;
// SHLD/SHRD.
defm : X86WriteRes<WriteSHDrri, [HWPort1], 3, [1], 1>;
@ -1306,6 +1306,11 @@ def HWWriteResGroup69 : SchedWriteRes<[HWPort4,HWPort23,HWPort237,HWPort06,HWPor
let NumMicroOps = 6;
let ResourceCycles = [1,1,1,2,1];
}
def: InstRW<[HWWriteResGroup69], (instregex "ROL(8|16|32|64)mCL",
"ROR(8|16|32|64)mCL",
"SAR(8|16|32|64)mCL",
"SHL(8|16|32|64)mCL",
"SHR(8|16|32|64)mCL")>;
def: SchedAlias<WriteADCRMW, HWWriteResGroup69>;
def HWWriteResGroup70 : SchedWriteRes<[HWPort0,HWPort1]> {

36
llvm/lib/Target/X86/X86SchedSandyBridge.td
View File

@ -79,7 +79,7 @@ def : ReadAdvance<ReadAfterLd, 5>;
multiclass SBWriteResPair<X86FoldableSchedWrite SchedRW,
list<ProcResourceKind> ExePorts,
int Lat, list<int> Res = [1], int UOps = 1,
int LoadLat = 5, int LoadUOps = 1> {
int LoadLat = 5> {
// Register variant is using a single cycle on ExePort.
def : WriteRes<SchedRW, ExePorts> {
let Latency = Lat;
@ -92,7 +92,7 @@ multiclass SBWriteResPair<X86FoldableSchedWrite SchedRW,
def : WriteRes<SchedRW.Folded, !listconcat([SBPort23], ExePorts)> {
let Latency = !add(Lat, LoadLat);
let ResourceCycles = !listconcat([1], Res);
let NumMicroOps = !add(UOps, LoadUOps);
let NumMicroOps = !add(UOps, 1);
}
}
@ -144,10 +144,10 @@ defm : X86WriteRes<WriteSHDrrcl,[SBPort05, SBPort015], 4, [3, 1], 4>;
defm : X86WriteRes<WriteSHDmri, [SBPort4,SBPort23,SBPort05,SBPort015], 8, [1, 2, 1, 1], 5>;
defm : X86WriteRes<WriteSHDmrcl,[SBPort4,SBPort23,SBPort05,SBPort015], 10, [1, 2, 3, 1], 7>;
defm : SBWriteResPair<WriteShift, [SBPort05], 1, [1], 1, 6, 2>;
defm : SBWriteResPair<WriteShiftCL, [SBPort05], 3, [3], 3, 6, 2>;
defm : SBWriteResPair<WriteRotate, [SBPort05], 2, [2], 2, 6, 2>;
defm : SBWriteResPair<WriteRotateCL, [SBPort05], 3, [3], 3, 6, 2>;
defm : SBWriteResPair<WriteShift, [SBPort05], 1>;
defm : SBWriteResPair<WriteShiftCL, [SBPort05], 3, [3], 3>;
defm : SBWriteResPair<WriteRotate, [SBPort05], 2, [2], 2>;
defm : SBWriteResPair<WriteRotateCL, [SBPort05], 3, [3], 3>;
defm : SBWriteResPair<WriteJump, [SBPort5], 1>;
defm : SBWriteResPair<WriteCRC32, [SBPort1], 3, [1], 1, 5>;
@ -924,7 +924,10 @@ def SBWriteResGroup69 : SchedWriteRes<[SBPort4,SBPort23,SBPort05]> {
}
def: InstRW<[SBWriteResGroup69], (instregex "BTC(16|32|64)mi8",
"BTR(16|32|64)mi8",
"BTS(16|32|64)mi8")>;
"BTS(16|32|64)mi8",
"SAR(8|16|32|64)m(1|i)",
"SHL(8|16|32|64)m(1|i)",
"SHR(8|16|32|64)m(1|i)")>;
def SBWriteResGroup77 : SchedWriteRes<[SBPort0,SBPort1,SBPort23]> {
let Latency = 8;
@ -957,6 +960,14 @@ def SBWriteResGroup84 : SchedWriteRes<[SBPort4,SBPort5,SBPort23]> {
}
def: InstRW<[SBWriteResGroup84], (instrs FLDCW16m)>;
def SBWriteResGroup85 : SchedWriteRes<[SBPort4,SBPort23,SBPort05]> {
let Latency = 8;
let NumMicroOps = 5;
let ResourceCycles = [1,2,2];
}
def: InstRW<[SBWriteResGroup85], (instregex "ROL(8|16|32|64)m(1|i)",
"ROR(8|16|32|64)m(1|i)")>;
def SBWriteResGroup86 : SchedWriteRes<[SBPort4,SBPort23,SBPort015]> {
let Latency = 8;
let NumMicroOps = 5;
@ -994,6 +1005,17 @@ def SBWriteResGroup97 : SchedWriteRes<[SBPort1,SBPort4,SBPort23]> {
def: InstRW<[SBWriteResGroup97], (instregex "IST_F(16|32)m",
"IST_FP(16|32|64)m")>;
def SBWriteResGroup97_2 : SchedWriteRes<[SBPort4,SBPort23,SBPort05]> {
let Latency = 9;
let NumMicroOps = 6;
let ResourceCycles = [1,2,3];
}
def: InstRW<[SBWriteResGroup97_2], (instregex "ROL(8|16|32|64)mCL",
"ROR(8|16|32|64)mCL",
"SAR(8|16|32|64)mCL",
"SHL(8|16|32|64)mCL",
"SHR(8|16|32|64)mCL")>;
def SBWriteResGroup98 : SchedWriteRes<[SBPort4,SBPort23,SBPort015]> {
let Latency = 9;
let NumMicroOps = 6;

23
llvm/lib/Target/X86/X86SchedSkylakeClient.td
View File

@ -83,7 +83,7 @@ def : ReadAdvance<ReadAfterLd, 5>;
multiclass SKLWriteResPair<X86FoldableSchedWrite SchedRW,
list<ProcResourceKind> ExePorts,
int Lat, list<int> Res = [1], int UOps = 1,
int LoadLat = 5, int LoadUOps = 1> {
int LoadLat = 5> {
// Register variant is using a single cycle on ExePort.
def : WriteRes<SchedRW, ExePorts> {
let Latency = Lat;
@ -96,7 +96,7 @@ multiclass SKLWriteResPair<X86FoldableSchedWrite SchedRW,
def : WriteRes<SchedRW.Folded, !listconcat([SKLPort23], ExePorts)> {
let Latency = !add(Lat, LoadLat);
let ResourceCycles = !listconcat([1], Res);
let NumMicroOps = !add(UOps, LoadUOps);
let NumMicroOps = !add(UOps, 1);
}
}
@ -169,10 +169,10 @@ defm : SKLWriteResPair<WriteTZCNT, [SKLPort1], 3>;
defm : SKLWriteResPair<WritePOPCNT, [SKLPort1], 3>;
// Integer shifts and rotates.
defm : SKLWriteResPair<WriteShift, [SKLPort06], 1>;
defm : SKLWriteResPair<WriteShiftCL, [SKLPort06], 3, [3], 3, 5, 2>;
defm : SKLWriteResPair<WriteRotate, [SKLPort06], 2, [2], 2>;
defm : SKLWriteResPair<WriteRotateCL, [SKLPort06], 3, [3], 3, 5, 2>;
defm : SKLWriteResPair<WriteShift, [SKLPort06], 1>;
defm : SKLWriteResPair<WriteShiftCL, [SKLPort06], 3, [3], 3>;
defm : SKLWriteResPair<WriteRotate, [SKLPort06], 2, [2], 2>;
defm : SKLWriteResPair<WriteRotateCL, [SKLPort06], 3, [3], 3>;
// SHLD/SHRD.
defm : X86WriteRes<WriteSHDrri, [SKLPort1], 3, [1], 1>;
@ -1246,6 +1246,17 @@ def SKLWriteResGroup116 : SchedWriteRes<[SKLPort23,SKLPort237,SKLPort06,SKLPort0
def: InstRW<[SKLWriteResGroup116], (instregex "RCL(8|16|32|64)m(1|i)",
"RCR(8|16|32|64)m(1|i)")>;
def SKLWriteResGroup117 : SchedWriteRes<[SKLPort4,SKLPort23,SKLPort237,SKLPort06]> {
let Latency = 8;
let NumMicroOps = 6;
let ResourceCycles = [1,1,1,3];
}
def: InstRW<[SKLWriteResGroup117], (instregex "ROL(8|16|32|64)mCL",
"ROR(8|16|32|64)mCL",
"SAR(8|16|32|64)mCL",
"SHL(8|16|32|64)mCL",
"SHR(8|16|32|64)mCL")>;
def SKLWriteResGroup119 : SchedWriteRes<[SKLPort4,SKLPort23,SKLPort237,SKLPort06,SKLPort0156]> {
let Latency = 8;
let NumMicroOps = 6;

23
llvm/lib/Target/X86/X86SchedSkylakeServer.td
View File

@ -83,7 +83,7 @@ def : ReadAdvance<ReadAfterLd, 5>;
multiclass SKXWriteResPair<X86FoldableSchedWrite SchedRW,
list<ProcResourceKind> ExePorts,
int Lat, list<int> Res = [1], int UOps = 1,
int LoadLat = 5, int LoadUOps = 1> {
int LoadLat = 5> {
// Register variant is using a single cycle on ExePort.
def : WriteRes<SchedRW, ExePorts> {
let Latency = Lat;
@ -96,7 +96,7 @@ multiclass SKXWriteResPair<X86FoldableSchedWrite SchedRW,
def : WriteRes<SchedRW.Folded, !listconcat([SKXPort23], ExePorts)> {
let Latency = !add(Lat, LoadLat);
let ResourceCycles = !listconcat([1], Res);
let NumMicroOps = !add(UOps, LoadUOps);
let NumMicroOps = !add(UOps, 1);
}
}
@ -163,10 +163,10 @@ def : WriteRes<WriteLAHFSAHF, [SKXPort06]>;
def : WriteRes<WriteBitTest, [SKXPort06]>; //
// Integer shifts and rotates.
defm : SKXWriteResPair<WriteShift, [SKXPort06], 1>;
defm : SKXWriteResPair<WriteShiftCL, [SKXPort06], 3, [3], 3, 5, 2>;
defm : SKXWriteResPair<WriteRotate, [SKXPort06], 2, [2], 2>;
defm : SKXWriteResPair<WriteRotateCL, [SKXPort06], 3, [3], 3, 5, 2>;
defm : SKXWriteResPair<WriteShift, [SKXPort06], 1>;
defm : SKXWriteResPair<WriteShiftCL, [SKXPort06], 3, [3], 3>;
defm : SKXWriteResPair<WriteRotate, [SKXPort06], 2, [2], 2>;
defm : SKXWriteResPair<WriteRotateCL, [SKXPort06], 3, [3], 3>;
// SHLD/SHRD.
defm : X86WriteRes<WriteSHDrri, [SKXPort1], 3, [1], 1>;
@ -1599,6 +1599,17 @@ def SKXWriteResGroup127 : SchedWriteRes<[SKXPort23,SKXPort237,SKXPort06,SKXPort0
def: InstRW<[SKXWriteResGroup127], (instregex "RCL(8|16|32|64)m(1|i)",
"RCR(8|16|32|64)m(1|i)")>;
def SKXWriteResGroup128 : SchedWriteRes<[SKXPort4,SKXPort23,SKXPort237,SKXPort06]> {
let Latency = 8;
let NumMicroOps = 6;
let ResourceCycles = [1,1,1,3];
}
def: InstRW<[SKXWriteResGroup128], (instregex "ROL(8|16|32|64)mCL",
"ROR(8|16|32|64)mCL",
"SAR(8|16|32|64)mCL",
"SHL(8|16|32|64)mCL",
"SHR(8|16|32|64)mCL")>;
def SKXWriteResGroup130 : SchedWriteRes<[SKXPort4,SKXPort23,SKXPort237,SKXPort06,SKXPort0156]> {
let Latency = 8;
let NumMicroOps = 6;

16
llvm/test/CodeGen/X86/bmi2-schedule.ll
View File

@ -430,7 +430,7 @@ define i32 @test_rorx_i32(i32 %a0, i32 %a1, i32 *%a2) {
; GENERIC-LABEL: test_rorx_i32:
; GENERIC: # %bb.0:
; GENERIC-NEXT: rorxl $5, %edi, %ecx # sched: [1:0.50]
; GENERIC-NEXT: rorxl $5, (%rdx), %eax # sched: [7:0.50]
; GENERIC-NEXT: rorxl $5, (%rdx), %eax # sched: [6:0.50]
; GENERIC-NEXT: addl %ecx, %eax # sched: [1:0.33]
; GENERIC-NEXT: retq # sched: [1:1.00]
;
@ -483,7 +483,7 @@ define i64 @test_rorx_i64(i64 %a0, i64 %a1, i64 *%a2) {
; GENERIC-LABEL: test_rorx_i64:
; GENERIC: # %bb.0:
; GENERIC-NEXT: rorxq $5, %rdi, %rcx # sched: [1:0.50]
; GENERIC-NEXT: rorxq $5, (%rdx), %rax # sched: [7:0.50]
; GENERIC-NEXT: rorxq $5, (%rdx), %rax # sched: [6:0.50]
; GENERIC-NEXT: addq %rcx, %rax # sched: [1:0.33]
; GENERIC-NEXT: retq # sched: [1:1.00]
;
@ -536,7 +536,7 @@ define i32 @test_sarx_i32(i32 %a0, i32 %a1, i32 *%a2) {
; GENERIC-LABEL: test_sarx_i32:
; GENERIC: # %bb.0:
; GENERIC-NEXT: sarxl %esi, %edi, %ecx # sched: [1:0.50]
; GENERIC-NEXT: sarxl %esi, (%rdx), %eax # sched: [7:0.50]
; GENERIC-NEXT: sarxl %esi, (%rdx), %eax # sched: [6:0.50]
; GENERIC-NEXT: addl %ecx, %eax # sched: [1:0.33]
; GENERIC-NEXT: retq # sched: [1:1.00]
;
@ -585,7 +585,7 @@ define i64 @test_sarx_i64(i64 %a0, i64 %a1, i64 *%a2) {
; GENERIC-LABEL: test_sarx_i64:
; GENERIC: # %bb.0:
; GENERIC-NEXT: sarxq %rsi, %rdi, %rcx # sched: [1:0.50]
; GENERIC-NEXT: sarxq %rsi, (%rdx), %rax # sched: [7:0.50]
; GENERIC-NEXT: sarxq %rsi, (%rdx), %rax # sched: [6:0.50]
; GENERIC-NEXT: addq %rcx, %rax # sched: [1:0.33]
; GENERIC-NEXT: retq # sched: [1:1.00]
;
@ -634,7 +634,7 @@ define i32 @test_shlx_i32(i32 %a0, i32 %a1, i32 *%a2) {
; GENERIC-LABEL: test_shlx_i32:
; GENERIC: # %bb.0:
; GENERIC-NEXT: shlxl %esi, %edi, %ecx # sched: [1:0.50]
; GENERIC-NEXT: shlxl %esi, (%rdx), %eax # sched: [7:0.50]
; GENERIC-NEXT: shlxl %esi, (%rdx), %eax # sched: [6:0.50]
; GENERIC-NEXT: addl %ecx, %eax # sched: [1:0.33]
; GENERIC-NEXT: retq # sched: [1:1.00]
;
@ -683,7 +683,7 @@ define i64 @test_shlx_i64(i64 %a0, i64 %a1, i64 *%a2) {
; GENERIC-LABEL: test_shlx_i64:
; GENERIC: # %bb.0:
; GENERIC-NEXT: shlxq %rsi, %rdi, %rcx # sched: [1:0.50]
; GENERIC-NEXT: shlxq %rsi, (%rdx), %rax # sched: [7:0.50]
; GENERIC-NEXT: shlxq %rsi, (%rdx), %rax # sched: [6:0.50]
; GENERIC-NEXT: addq %rcx, %rax # sched: [1:0.33]
; GENERIC-NEXT: retq # sched: [1:1.00]
;
@ -732,7 +732,7 @@ define i32 @test_shrx_i32(i32 %a0, i32 %a1, i32 *%a2) {
; GENERIC-LABEL: test_shrx_i32:
; GENERIC: # %bb.0:
; GENERIC-NEXT: shrxl %esi, %edi, %ecx # sched: [1:0.50]
; GENERIC-NEXT: shrxl %esi, (%rdx), %eax # sched: [7:0.50]
; GENERIC-NEXT: shrxl %esi, (%rdx), %eax # sched: [6:0.50]
; GENERIC-NEXT: addl %ecx, %eax # sched: [1:0.33]
; GENERIC-NEXT: retq # sched: [1:1.00]
;
@ -781,7 +781,7 @@ define i64 @test_shrx_i64(i64 %a0, i64 %a1, i64 *%a2) {
; GENERIC-LABEL: test_shrx_i64:
; GENERIC: # %bb.0:
; GENERIC-NEXT: shrxq %rsi, %rdi, %rcx # sched: [1:0.50]
; GENERIC-NEXT: shrxq %rsi, (%rdx), %rax # sched: [7:0.50]
; GENERIC-NEXT: shrxq %rsi, (%rdx), %rax # sched: [6:0.50]
; GENERIC-NEXT: addq %rcx, %rax # sched: [1:0.33]
; GENERIC-NEXT: retq # sched: [1:1.00]
;

16
llvm/test/tools/llvm-mca/X86/Generic/resources-bmi2.s
View File

@ -75,21 +75,21 @@ shrx %rax, (%rbx), %rcx
# CHECK-NEXT: 1 1 0.33 pextq %rax, %rbx, %rcx
# CHECK-NEXT: 2 6 0.50 * pextq (%rax), %rbx, %rcx
# CHECK-NEXT: 1 1 0.50 rorxl $1, %eax, %ecx
# CHECK-NEXT: 3 7 0.50 * rorxl $1, (%rax), %ecx
# CHECK-NEXT: 2 6 0.50 * rorxl $1, (%rax), %ecx
# CHECK-NEXT: 1 1 0.50 rorxq $1, %rax, %rcx
# CHECK-NEXT: 3 7 0.50 * rorxq $1, (%rax), %rcx
# CHECK-NEXT: 2 6 0.50 * rorxq $1, (%rax), %rcx
# CHECK-NEXT: 1 1 0.50 sarxl %eax, %ebx, %ecx
# CHECK-NEXT: 3 7 0.50 * sarxl %eax, (%rbx), %ecx
# CHECK-NEXT: 2 6 0.50 * sarxl %eax, (%rbx), %ecx
# CHECK-NEXT: 1 1 0.50 sarxq %rax, %rbx, %rcx
# CHECK-NEXT: 3 7 0.50 * sarxq %rax, (%rbx), %rcx
# CHECK-NEXT: 2 6 0.50 * sarxq %rax, (%rbx), %rcx
# CHECK-NEXT: 1 1 0.50 shlxl %eax, %ebx, %ecx
# CHECK-NEXT: 3 7 0.50 * shlxl %eax, (%rbx), %ecx
# CHECK-NEXT: 2 6 0.50 * shlxl %eax, (%rbx), %ecx
# CHECK-NEXT: 1 1 0.50 shlxq %rax, %rbx, %rcx
# CHECK-NEXT: 3 7 0.50 * shlxq %rax, (%rbx), %rcx
# CHECK-NEXT: 2 6 0.50 * shlxq %rax, (%rbx), %rcx
# CHECK-NEXT: 1 1 0.50 shrxl %eax, %ebx, %ecx
# CHECK-NEXT: 3 7 0.50 * shrxl %eax, (%rbx), %ecx
# CHECK-NEXT: 2 6 0.50 * shrxl %eax, (%rbx), %ecx
# CHECK-NEXT: 1 1 0.50 shrxq %rax, %rbx, %rcx
# CHECK-NEXT: 3 7 0.50 * shrxq %rax, (%rbx), %rcx
# CHECK-NEXT: 2 6 0.50 * shrxq %rax, (%rbx), %rcx
# CHECK: Resources:
# CHECK-NEXT: [0] - SBDivider