[llvm] r337024 - [llvm-mca][BtVer2] Add tests for dependency breaking instructions.
Andrea Di Biagio via llvm-commits
llvm-commits at lists.llvm.org
Fri Jul 13 09:46:51 PDT 2018
Author: adibiagio
Date: Fri Jul 13 09:46:51 2018
New Revision: 337024
URL: http://llvm.org/viewvc/llvm-project?rev=337024&view=rev
Log:
[llvm-mca][BtVer2] Add tests for dependency breaking instructions.
Added:
llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-cmp.s
llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpeq.s
llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpgt.s
llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-1.s
llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-2.s
Modified:
llvm/trunk/test/tools/llvm-mca/X86/BtVer2/one-idioms.s
Added: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-cmp.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-cmp.s?rev=337024&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-cmp.s (added)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-cmp.s Fri Jul 13 09:46:51 2018
@@ -0,0 +1,74 @@
+# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
+# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s
+
+# Perf stat reports an IPC of 1.97 for this block of code.
+
+# The CMP instruction doesn't depend on the value of EAX. It can set the flags
+# without having to read the inputs.
+
+cmp %eax, %eax
+cmovae %ebx, %eax
+
+# CHECK: Iterations: 1500
+# CHECK-NEXT: Instructions: 3000
+# CHECK-NEXT: Total Cycles: 3003
+# CHECK-NEXT: Dispatch Width: 2
+# CHECK-NEXT: IPC: 1.00
+# CHECK-NEXT: Block RThroughput: 1.0
+
+# CHECK: Instruction Info:
+# CHECK-NEXT: [1]: #uOps
+# CHECK-NEXT: [2]: Latency
+# CHECK-NEXT: [3]: RThroughput
+# CHECK-NEXT: [4]: MayLoad
+# CHECK-NEXT: [5]: MayStore
+# CHECK-NEXT: [6]: HasSideEffects (U)
+
+# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
+# CHECK-NEXT: 1 1 0.50 cmpl %eax, %eax
+# CHECK-NEXT: 1 1 0.50 cmovael %ebx, %eax
+
+# CHECK: Resources:
+# CHECK-NEXT: [0] - JALU0
+# CHECK-NEXT: [1] - JALU1
+# CHECK-NEXT: [2] - JDiv
+# CHECK-NEXT: [3] - JFPA
+# CHECK-NEXT: [4] - JFPM
+# CHECK-NEXT: [5] - JFPU0
+# CHECK-NEXT: [6] - JFPU1
+# CHECK-NEXT: [7] - JLAGU
+# CHECK-NEXT: [8] - JMul
+# CHECK-NEXT: [9] - JSAGU
+# CHECK-NEXT: [10] - JSTC
+# CHECK-NEXT: [11] - JVALU0
+# CHECK-NEXT: [12] - JVALU1
+# CHECK-NEXT: [13] - JVIMUL
+
+# CHECK: Resource pressure per iteration:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
+# CHECK-NEXT: 1.00 1.00 - - - - - - - - - - - -
+
+# CHECK: Resource pressure by instruction:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:
+# CHECK-NEXT: - 1.00 - - - - - - - - - - - - cmpl %eax, %eax
+# CHECK-NEXT: 1.00 - - - - - - - - - - - - - cmovael %ebx, %eax
+
+# CHECK: Timeline view:
+# CHECK-NEXT: Index 012345678
+
+# CHECK: [0,0] DeER . . cmpl %eax, %eax
+# CHECK-NEXT: [0,1] D=eER. . cmovael %ebx, %eax
+# CHECK-NEXT: [1,0] .D=eER . cmpl %eax, %eax
+# CHECK-NEXT: [1,1] .D==eER . cmovael %ebx, %eax
+# CHECK-NEXT: [2,0] . D==eER. cmpl %eax, %eax
+# CHECK-NEXT: [2,1] . D===eER cmovael %ebx, %eax
+
+# CHECK: Average Wait times (based on the timeline view):
+# CHECK-NEXT: [0]: Executions
+# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
+# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
+# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
+
+# CHECK: [0] [1] [2] [3]
+# CHECK-NEXT: 0. 3 2.0 0.3 0.0 cmpl %eax, %eax
+# CHECK-NEXT: 1. 3 3.0 0.0 0.0 cmovael %ebx, %eax
Added: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpeq.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpeq.s?rev=337024&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpeq.s (added)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpeq.s Fri Jul 13 09:46:51 2018
@@ -0,0 +1,90 @@
+# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
+# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s
+
+# perf stat reports an IPC of 2.00 for this block of code.
+
+# All of the vector packed compares from this test are dependency breaking
+# instructions. That means, there is no RAW dependency between any of the
+# instructions, and the code can be fully parallelized in hardware.
+
+vpcmpeqb %xmm0, %xmm0, %xmm1
+vpcmpeqw %xmm1, %xmm1, %xmm2
+vpcmpeqd %xmm2, %xmm2, %xmm3
+vpcmpeqq %xmm3, %xmm3, %xmm0
+
+# CHECK: Iterations: 1500
+# CHECK-NEXT: Instructions: 6000
+# CHECK-NEXT: Total Cycles: 6003
+# CHECK-NEXT: Dispatch Width: 2
+# CHECK-NEXT: IPC: 1.00
+# CHECK-NEXT: Block RThroughput: 2.0
+
+# CHECK: Instruction Info:
+# CHECK-NEXT: [1]: #uOps
+# CHECK-NEXT: [2]: Latency
+# CHECK-NEXT: [3]: RThroughput
+# CHECK-NEXT: [4]: MayLoad
+# CHECK-NEXT: [5]: MayStore
+# CHECK-NEXT: [6]: HasSideEffects (U)
+
+# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
+# CHECK-NEXT: 1 1 0.50 vpcmpeqb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: 1 1 0.50 vpcmpeqw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: 1 1 0.50 vpcmpeqd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: 1 1 0.50 vpcmpeqq %xmm3, %xmm3, %xmm0
+
+# CHECK: Resources:
+# CHECK-NEXT: [0] - JALU0
+# CHECK-NEXT: [1] - JALU1
+# CHECK-NEXT: [2] - JDiv
+# CHECK-NEXT: [3] - JFPA
+# CHECK-NEXT: [4] - JFPM
+# CHECK-NEXT: [5] - JFPU0
+# CHECK-NEXT: [6] - JFPU1
+# CHECK-NEXT: [7] - JLAGU
+# CHECK-NEXT: [8] - JMul
+# CHECK-NEXT: [9] - JSAGU
+# CHECK-NEXT: [10] - JSTC
+# CHECK-NEXT: [11] - JVALU0
+# CHECK-NEXT: [12] - JVALU1
+# CHECK-NEXT: [13] - JVIMUL
+
+# CHECK: Resource pressure per iteration:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
+# CHECK-NEXT: - - - - - 2.00 2.00 - - - - 2.00 2.00 -
+
+# CHECK: Resource pressure by instruction:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:
+# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - vpcmpeqb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - vpcmpeqw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: - - - - - - 1.00 - - - - - 1.00 - vpcmpeqd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: - - - - - 1.00 - - - - - 1.00 - - vpcmpeqq %xmm3, %xmm3, %xmm0
+
+# CHECK: Timeline view:
+# CHECK-NEXT: 01234
+# CHECK-NEXT: Index 0123456789
+
+# CHECK: [0,0] DeER . . . vpcmpeqb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: [0,1] D=eER. . . vpcmpeqw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: [0,2] .D=eER . . vpcmpeqd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: [0,3] .D==eER . . vpcmpeqq %xmm3, %xmm3, %xmm0
+# CHECK-NEXT: [1,0] . D==eER . . vpcmpeqb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: [1,1] . D===eER . . vpcmpeqw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: [1,2] . D===eER. . vpcmpeqd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: [1,3] . D====eER . vpcmpeqq %xmm3, %xmm3, %xmm0
+# CHECK-NEXT: [2,0] . D====eER . vpcmpeqb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: [2,1] . D=====eER . vpcmpeqw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: [2,2] . D=====eER. vpcmpeqd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: [2,3] . D======eER vpcmpeqq %xmm3, %xmm3, %xmm0
+
+# CHECK: Average Wait times (based on the timeline view):
+# CHECK-NEXT: [0]: Executions
+# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
+# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
+# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
+
+# CHECK: [0] [1] [2] [3]
+# CHECK-NEXT: 0. 3 3.0 0.3 0.0 vpcmpeqb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: 1. 3 4.0 0.0 0.0 vpcmpeqw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: 2. 3 4.0 0.0 0.0 vpcmpeqd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: 3. 3 5.0 0.0 0.0 vpcmpeqq %xmm3, %xmm3, %xmm0
Added: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpgt.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpgt.s?rev=337024&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpgt.s (added)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-pcmpgt.s Fri Jul 13 09:46:51 2018
@@ -0,0 +1,90 @@
+# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
+# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s
+
+# perf stat reports an IPC of 2.00 for this block of code.
+
+# All of the vector packed compares from this test are zero idioms. These zero
+# idioms are all detected and removed by the register renamer. That means, no
+# uOp is executed, and there is no RAW dependency for any of the packed
+# compares.
+
+vpcmpgtb %xmm0, %xmm0, %xmm1
+vpcmpgtw %xmm1, %xmm1, %xmm2
+vpcmpgtd %xmm2, %xmm2, %xmm3
+vpcmpgtq %xmm3, %xmm3, %xmm0
+
+# CHECK: Iterations: 1500
+# CHECK-NEXT: Instructions: 6000
+# CHECK-NEXT: Total Cycles: 3001
+# CHECK-NEXT: Dispatch Width: 2
+# CHECK-NEXT: IPC: 2.00
+# CHECK-NEXT: Block RThroughput: 2.0
+
+# CHECK: Instruction Info:
+# CHECK-NEXT: [1]: #uOps
+# CHECK-NEXT: [2]: Latency
+# CHECK-NEXT: [3]: RThroughput
+# CHECK-NEXT: [4]: MayLoad
+# CHECK-NEXT: [5]: MayStore
+# CHECK-NEXT: [6]: HasSideEffects (U)
+
+# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
+# CHECK-NEXT: 1 0 0.50 vpcmpgtb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: 1 0 0.50 vpcmpgtw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: 1 0 0.50 vpcmpgtd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: 1 0 0.50 vpcmpgtq %xmm3, %xmm3, %xmm0
+
+# CHECK: Resources:
+# CHECK-NEXT: [0] - JALU0
+# CHECK-NEXT: [1] - JALU1
+# CHECK-NEXT: [2] - JDiv
+# CHECK-NEXT: [3] - JFPA
+# CHECK-NEXT: [4] - JFPM
+# CHECK-NEXT: [5] - JFPU0
+# CHECK-NEXT: [6] - JFPU1
+# CHECK-NEXT: [7] - JLAGU
+# CHECK-NEXT: [8] - JMul
+# CHECK-NEXT: [9] - JSAGU
+# CHECK-NEXT: [10] - JSTC
+# CHECK-NEXT: [11] - JVALU0
+# CHECK-NEXT: [12] - JVALU1
+# CHECK-NEXT: [13] - JVIMUL
+
+# CHECK: Resource pressure per iteration:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
+# CHECK-NEXT: - - - - - - - - - - - - - -
+
+# CHECK: Resource pressure by instruction:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:
+# CHECK-NEXT: - - - - - - - - - - - - - - vpcmpgtb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: - - - - - - - - - - - - - - vpcmpgtw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: - - - - - - - - - - - - - - vpcmpgtd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: - - - - - - - - - - - - - - vpcmpgtq %xmm3, %xmm3, %xmm0
+
+# CHECK: Timeline view:
+# CHECK-NEXT: Index 0123456
+
+# CHECK: [0,0] DR .. vpcmpgtb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: [0,1] DR .. vpcmpgtw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: [0,2] .DR .. vpcmpgtd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: [0,3] .DR .. vpcmpgtq %xmm3, %xmm3, %xmm0
+# CHECK-NEXT: [1,0] . DR .. vpcmpgtb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: [1,1] . DR .. vpcmpgtw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: [1,2] . DR.. vpcmpgtd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: [1,3] . DR.. vpcmpgtq %xmm3, %xmm3, %xmm0
+# CHECK-NEXT: [2,0] . DR. vpcmpgtb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: [2,1] . DR. vpcmpgtw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: [2,2] . DR vpcmpgtd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: [2,3] . DR vpcmpgtq %xmm3, %xmm3, %xmm0
+
+# CHECK: Average Wait times (based on the timeline view):
+# CHECK-NEXT: [0]: Executions
+# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
+# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
+# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
+
+# CHECK: [0] [1] [2] [3]
+# CHECK-NEXT: 0. 3 0.0 0.0 0.0 vpcmpgtb %xmm0, %xmm0, %xmm1
+# CHECK-NEXT: 1. 3 0.0 0.0 0.0 vpcmpgtw %xmm1, %xmm1, %xmm2
+# CHECK-NEXT: 2. 3 0.0 0.0 0.0 vpcmpgtd %xmm2, %xmm2, %xmm3
+# CHECK-NEXT: 3. 3 0.0 0.0 0.0 vpcmpgtq %xmm3, %xmm3, %xmm0
Added: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-1.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-1.s?rev=337024&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-1.s (added)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-1.s Fri Jul 13 09:46:51 2018
@@ -0,0 +1,75 @@
+# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
+# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s
+
+# perf stat reports an IPC of 1.00 for this code block.
+
+# Although both SBB are dependency breaking instructions, there is still an
+# implicit dependency on EFLAGS which limits the ILP. So, the hardware backend
+# can only execute one instruction per cycle.
+
+sbb %edx, %edx
+sbb %eax, %eax
+
+# CHECK: Iterations: 1500
+# CHECK-NEXT: Instructions: 3000
+# CHECK-NEXT: Total Cycles: 3003
+# CHECK-NEXT: Dispatch Width: 2
+# CHECK-NEXT: IPC: 1.00
+# CHECK-NEXT: Block RThroughput: 2.0
+
+# CHECK: Instruction Info:
+# CHECK-NEXT: [1]: #uOps
+# CHECK-NEXT: [2]: Latency
+# CHECK-NEXT: [3]: RThroughput
+# CHECK-NEXT: [4]: MayLoad
+# CHECK-NEXT: [5]: MayStore
+# CHECK-NEXT: [6]: HasSideEffects (U)
+
+# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
+# CHECK-NEXT: 1 1 1.00 sbbl %edx, %edx
+# CHECK-NEXT: 1 1 1.00 sbbl %eax, %eax
+
+# CHECK: Resources:
+# CHECK-NEXT: [0] - JALU0
+# CHECK-NEXT: [1] - JALU1
+# CHECK-NEXT: [2] - JDiv
+# CHECK-NEXT: [3] - JFPA
+# CHECK-NEXT: [4] - JFPM
+# CHECK-NEXT: [5] - JFPU0
+# CHECK-NEXT: [6] - JFPU1
+# CHECK-NEXT: [7] - JLAGU
+# CHECK-NEXT: [8] - JMul
+# CHECK-NEXT: [9] - JSAGU
+# CHECK-NEXT: [10] - JSTC
+# CHECK-NEXT: [11] - JVALU0
+# CHECK-NEXT: [12] - JVALU1
+# CHECK-NEXT: [13] - JVIMUL
+
+# CHECK: Resource pressure per iteration:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
+# CHECK-NEXT: 2.00 2.00 - - - - - - - - - - - -
+
+# CHECK: Resource pressure by instruction:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:
+# CHECK-NEXT: - 2.00 - - - - - - - - - - - - sbbl %edx, %edx
+# CHECK-NEXT: 2.00 - - - - - - - - - - - - - sbbl %eax, %eax
+
+# CHECK: Timeline view:
+# CHECK-NEXT: Index 012345678
+
+# CHECK: [0,0] DeER . . sbbl %edx, %edx
+# CHECK-NEXT: [0,1] D=eER. . sbbl %eax, %eax
+# CHECK-NEXT: [1,0] .D=eER . sbbl %edx, %edx
+# CHECK-NEXT: [1,1] .D==eER . sbbl %eax, %eax
+# CHECK-NEXT: [2,0] . D==eER. sbbl %edx, %edx
+# CHECK-NEXT: [2,1] . D===eER sbbl %eax, %eax
+
+# CHECK: Average Wait times (based on the timeline view):
+# CHECK-NEXT: [0]: Executions
+# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
+# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
+# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
+
+# CHECK: [0] [1] [2] [3]
+# CHECK-NEXT: 0. 3 2.0 0.3 0.0 sbbl %edx, %edx
+# CHECK-NEXT: 1. 3 3.0 0.0 0.0 sbbl %eax, %eax
Added: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-2.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-2.s?rev=337024&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-2.s (added)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/dependency-breaking-sbb-2.s Fri Jul 13 09:46:51 2018
@@ -0,0 +1,83 @@
+# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
+# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -timeline -timeline-max-iterations=3 -iterations=1500 < %s | FileCheck %s
+
+# perf stat reports a throughput of 1.51 IPC for this block of code.
+
+# The SBB does not depend on the value of register EAX. That means, it doesn't
+# have to wait for the IMUL to write-back on EAX. However, it still depends on
+# the ADD for EFLAGS.
+
+imul %edx, %eax
+add %edx, %edx
+sbb %eax, %eax
+
+# CHECK: Iterations: 1500
+# CHECK-NEXT: Instructions: 4500
+# CHECK-NEXT: Total Cycles: 6745
+# CHECK-NEXT: Dispatch Width: 2
+# CHECK-NEXT: IPC: 0.67
+# CHECK-NEXT: Block RThroughput: 2.0
+
+# CHECK: Instruction Info:
+# CHECK-NEXT: [1]: #uOps
+# CHECK-NEXT: [2]: Latency
+# CHECK-NEXT: [3]: RThroughput
+# CHECK-NEXT: [4]: MayLoad
+# CHECK-NEXT: [5]: MayStore
+# CHECK-NEXT: [6]: HasSideEffects (U)
+
+# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
+# CHECK-NEXT: 2 3 1.00 imull %edx, %eax
+# CHECK-NEXT: 1 1 0.50 addl %edx, %edx
+# CHECK-NEXT: 1 1 1.00 sbbl %eax, %eax
+
+# CHECK: Resources:
+# CHECK-NEXT: [0] - JALU0
+# CHECK-NEXT: [1] - JALU1
+# CHECK-NEXT: [2] - JDiv
+# CHECK-NEXT: [3] - JFPA
+# CHECK-NEXT: [4] - JFPM
+# CHECK-NEXT: [5] - JFPU0
+# CHECK-NEXT: [6] - JFPU1
+# CHECK-NEXT: [7] - JLAGU
+# CHECK-NEXT: [8] - JMul
+# CHECK-NEXT: [9] - JSAGU
+# CHECK-NEXT: [10] - JSTC
+# CHECK-NEXT: [11] - JVALU0
+# CHECK-NEXT: [12] - JVALU1
+# CHECK-NEXT: [13] - JVIMUL
+
+# CHECK: Resource pressure per iteration:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]
+# CHECK-NEXT: 2.01 1.99 - - - - - - 1.00 - - - - -
+
+# CHECK: Resource pressure by instruction:
+# CHECK-NEXT: [0] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] Instructions:
+# CHECK-NEXT: - 1.00 - - - - - - 1.00 - - - - - imull %edx, %eax
+# CHECK-NEXT: 0.99 0.01 - - - - - - - - - - - - addl %edx, %edx
+# CHECK-NEXT: 1.01 0.99 - - - - - - - - - - - - sbbl %eax, %eax
+
+# CHECK: Timeline view:
+# CHECK-NEXT: 012345
+# CHECK-NEXT: Index 0123456789
+
+# CHECK: [0,0] DeeeER . . imull %edx, %eax
+# CHECK-NEXT: [0,1] .DeE-R . . addl %edx, %edx
+# CHECK-NEXT: [0,2] .D==eER . . sbbl %eax, %eax
+# CHECK-NEXT: [1,0] . D===eeeER . imull %edx, %eax
+# CHECK-NEXT: [1,1] . DeE----R . addl %edx, %edx
+# CHECK-NEXT: [1,2] . D=====eER . sbbl %eax, %eax
+# CHECK-NEXT: [2,0] . D=====eeeER. imull %edx, %eax
+# CHECK-NEXT: [2,1] . DeE------R. addl %edx, %edx
+# CHECK-NEXT: [2,2] . D=======eER sbbl %eax, %eax
+
+# CHECK: Average Wait times (based on the timeline view):
+# CHECK-NEXT: [0]: Executions
+# CHECK-NEXT: [1]: Average time spent waiting in a scheduler's queue
+# CHECK-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
+# CHECK-NEXT: [3]: Average time elapsed from WB until retire stage
+
+# CHECK: [0] [1] [2] [3]
+# CHECK-NEXT: 0. 3 3.7 0.7 0.0 imull %edx, %eax
+# CHECK-NEXT: 1. 3 1.0 1.0 3.7 addl %edx, %edx
+# CHECK-NEXT: 2. 3 5.7 0.0 0.0 sbbl %eax, %eax
Modified: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/one-idioms.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/one-idioms.s?rev=337024&r1=337023&r2=337024&view=diff
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/one-idioms.s (original)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/one-idioms.s Fri Jul 13 09:46:51 2018
@@ -6,7 +6,6 @@
pcmpeqb %mm2, %mm2
pcmpeqd %mm2, %mm2
-# pcmpeqq %mm2, %mm2 # invalid operand for instruction
pcmpeqw %mm2, %mm2
pcmpeqb %xmm2, %xmm2
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