[llvm] r329694 - [llvm-mca] Increase the default number of iterations to 100.
Andrea Di Biagio via llvm-commits
llvm-commits at lists.llvm.org
Tue Apr 10 05:50:03 PDT 2018
Author: adibiagio
Date: Tue Apr 10 05:50:03 2018
New Revision: 329694
URL: http://llvm.org/viewvc/llvm-project?rev=329694&view=rev
Log:
[llvm-mca] Increase the default number of iterations to 100.
Modified:
llvm/trunk/docs/CommandGuide/llvm-mca.rst
llvm/trunk/test/tools/llvm-mca/X86/BtVer2/pipes-fpu.s
llvm/trunk/test/tools/llvm-mca/X86/BtVer2/resources-f16c.s
llvm/trunk/test/tools/llvm-mca/X86/cpus.s
llvm/trunk/test/tools/llvm-mca/X86/default-iterations.s
llvm/trunk/tools/llvm-mca/README.txt
llvm/trunk/tools/llvm-mca/SourceMgr.h
Modified: llvm/trunk/docs/CommandGuide/llvm-mca.rst
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/docs/CommandGuide/llvm-mca.rst?rev=329694&r1=329693&r2=329694&view=diff
==============================================================================
--- llvm/trunk/docs/CommandGuide/llvm-mca.rst (original)
+++ llvm/trunk/docs/CommandGuide/llvm-mca.rst Tue Apr 10 05:50:03 2018
@@ -95,7 +95,7 @@ option specifies "``-``", then the outpu
.. option:: -iterations=<number of iterations>
Specify the number of iterations to run. If this flag is set to 0, then the
- tool sets the number of iterations to a default value (i.e. 70).
+ tool sets the number of iterations to a default value (i.e. 100).
.. option:: -noalias=<bool>
Modified: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/pipes-fpu.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/pipes-fpu.s?rev=329694&r1=329693&r2=329694&view=diff
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/pipes-fpu.s (original)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/pipes-fpu.s Tue Apr 10 05:50:03 2018
@@ -16,14 +16,12 @@ vsqrtps %xmm0, %xmm2
vaddps %ymm0, %ymm1, %ymm2
vsqrtps %ymm0, %ymm2
-
-# CHECK: Iterations: 70
-# CHECK-NEXT: Instructions: 560
-# CHECK-NEXT: Total Cycles: 4416
+# CHECK: Iterations: 100
+# CHECK-NEXT: Instructions: 800
+# CHECK-NEXT: Total Cycles: 6306
# CHECK-NEXT: Dispatch Width: 2
# CHECK-NEXT: IPC: 0.13
-
# CHECK: Instruction Info:
# CHECK-NEXT: [1]: #uOps
# CHECK-NEXT: [2]: Latency
@@ -42,7 +40,6 @@ vsqrtps %ymm0, %ymm2
# CHECK-NEXT: 2 3 2.00 vaddps %ymm0, %ymm1, %ymm2
# CHECK-NEXT: 2 42 42.00 vsqrtps %ymm0, %ymm2
-
# CHECK: Resources:
# CHECK-NEXT: [0] - JALU0
# CHECK-NEXT: [1] - JALU1
@@ -59,14 +56,14 @@ vsqrtps %ymm0, %ymm2
# 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: - - - 3.00 63.00 6.01 5.99 - - - 1.00 1.00 1.00 3.00
+# CHECK-NEXT: - - - 3.00 63.00 6.01 5.99 - - - 1.00 1.00 1.00 3.00
+
# 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 1.00 - - - - 0.03 0.97 2.00 vpmulld %xmm0, %xmm1, %xmm2
-# CHECK-NEXT: - - - - - 0.01 0.99 - - - - 0.97 0.03 - vpand %xmm0, %xmm1, %xmm2
+# CHECK-NEXT: - - - - - 2.00 1.00 - - - - 0.02 0.98 2.00 vpmulld %xmm0, %xmm1, %xmm2
+# CHECK-NEXT: - - - - - 0.01 0.99 - - - - 0.98 0.02 - vpand %xmm0, %xmm1, %xmm2
# CHECK-NEXT: - - - - - - 1.00 - - - 1.00 - - - vcvttps2dq %xmm0, %xmm2
# CHECK-NEXT: - - - - - 1.00 - - - - - - - 1.00 vpclmulqdq $0, %xmm0, %xmm1, %xmm2
# CHECK-NEXT: - - - 1.00 - 1.00 - - - - - - - - vaddps %xmm0, %xmm1, %xmm2
@@ -74,11 +71,10 @@ vsqrtps %ymm0, %ymm2
# CHECK-NEXT: - - - 2.00 - 2.00 - - - - - - - - vaddps %ymm0, %ymm1, %ymm2
# CHECK-NEXT: - - - - 42.00 - 2.00 - - - - - - - vsqrtps %ymm0, %ymm2
-
-
# CHECK: Timeline view:
# CHECK-NEXT: 0123456789 0123456789 0123456789 0
-# CHECK-NEXT: Index 0123456789 0123456789 0123456789 0123456789
+# CHECK-NEXT: Index 0123456789 0123456789 0123456789 0123456789
+
# CHECK: [0,0] DeeeeER . . . . . . . . . . . . . vpmulld %xmm0, %xmm1, %xmm2
# CHECK-NEXT: [0,1] .DeE--R . . . . . . . . . . . . . vpand %xmm0, %xmm1, %xmm2
# CHECK-NEXT: [0,2] . DeeeER . . . . . . . . . . . . . vcvttps2dq %xmm0, %xmm2
@@ -93,19 +89,19 @@ vsqrtps %ymm0, %ymm2
# CHECK-NEXT: [1,3] . . DeeE----------------------------------------------------------R vpclmulqdq $0, %xmm0, %xmm1, %xmm2
# CHECK-NEXT: [1,4] . . DeeeE--------------------------------------------------------R vaddps %xmm0, %xmm1, %xmm2
-
# 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. 2 1.0 1.0 28.0 vpmulld %xmm0, %xmm1, %xmm2
-# CHECK-NEXT: 1. 2 1.0 1.0 30.5 vpand %xmm0, %xmm1, %xmm2
-# CHECK-NEXT: 2. 2 1.0 1.0 28.0 vcvttps2dq %xmm0, %xmm2
-# CHECK-NEXT: 3. 2 1.0 1.0 29.5 vpclmulqdq $0, %xmm0, %xmm1, %xmm2
-# CHECK-NEXT: 4. 2 1.0 1.0 28.0 vaddps %xmm0, %xmm1, %xmm2
-# CHECK-NEXT: 5. 1 1.0 1.0 0.0 vsqrtps %xmm0, %xmm2
-# CHECK-NEXT: 6. 1 1.0 1.0 17.0 vaddps %ymm0, %ymm1, %ymm2
-# CHECK-NEXT: 7. 1 20.0 20.0 0.0 vsqrtps %ymm0, %ymm2
+# CHECK: [0] [1] [2] [3]
+# CHECK-NEXT: 0. 2 1.0 1.0 28.0 vpmulld %xmm0, %xmm1, %xmm2
+# CHECK-NEXT: 1. 2 1.0 1.0 30.5 vpand %xmm0, %xmm1, %xmm2
+# CHECK-NEXT: 2. 2 1.0 1.0 28.0 vcvttps2dq %xmm0, %xmm2
+# CHECK-NEXT: 3. 2 1.0 1.0 29.5 vpclmulqdq $0, %xmm0, %xmm1, %xmm2
+# CHECK-NEXT: 4. 2 1.0 1.0 28.0 vaddps %xmm0, %xmm1, %xmm2
+# CHECK-NEXT: 5. 1 1.0 1.0 0.0 vsqrtps %xmm0, %xmm2
+# CHECK-NEXT: 6. 1 1.0 1.0 17.0 vaddps %ymm0, %ymm1, %ymm2
+# CHECK-NEXT: 7. 1 20.0 20.0 0.0 vsqrtps %ymm0, %ymm2
+
Modified: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/resources-f16c.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/resources-f16c.s?rev=329694&r1=329693&r2=329694&view=diff
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/resources-f16c.s (original)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/resources-f16c.s Tue Apr 10 05:50:03 2018
@@ -12,6 +12,30 @@ vcvtps2ph $0, %xmm0, (%rax)
vcvtps2ph $0, %ymm0, %xmm2
vcvtps2ph $0, %ymm0, (%rax)
+# CHECK: Iterations: 100
+# CHECK-NEXT: Instructions: 800
+# CHECK-NEXT: Total Cycles: 1503
+# CHECK-NEXT: Dispatch Width: 2
+# CHECK-NEXT: IPC: 0.53
+
+# 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
+
+# CHECK: [1] [2] [3] [4] [5] [6] Instructions:
+# CHECK-NEXT: 1 3 1.00 vcvtph2ps %xmm0, %xmm2
+# CHECK-NEXT: 1 8 1.00 * vcvtph2ps (%rax), %xmm2
+# CHECK-NEXT: 2 3 2.00 vcvtph2ps %xmm0, %ymm2
+# CHECK-NEXT: 2 8 2.00 * vcvtph2ps (%rax), %ymm2
+# CHECK-NEXT: 1 3 1.00 vcvtps2ph $0, %xmm0, %xmm2
+# CHECK-NEXT: 1 3 1.00 * vcvtps2ph $0, %xmm0, (%rax)
+# CHECK-NEXT: 3 6 2.00 vcvtps2ph $0, %ymm0, %xmm2
+# CHECK-NEXT: 3 11 2.00 * vcvtps2ph $0, %ymm0, (%rax)
+
# CHECK: Resources:
# CHECK-NEXT: [0] - JALU0
# CHECK-NEXT: [1] - JALU1
@@ -28,6 +52,10 @@ vcvtps2ph $0, %ymm0, (%rax)
# 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 - 12.00 2.00 - 2.00 12.00 - - -
+
# 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 - - - vcvtph2ps %xmm0, %xmm2
@@ -36,5 +64,6 @@ vcvtps2ph $0, %ymm0, (%rax)
# CHECK-NEXT: - - - - - - 2.00 1.00 - - 2.00 - - - vcvtph2ps (%rax), %ymm2
# CHECK-NEXT: - - - - - - 1.00 - - - 1.00 - - - vcvtps2ph $0, %xmm0, %xmm2
# CHECK-NEXT: - - - - - - 1.00 - - 1.00 1.00 - - - vcvtps2ph $0, %xmm0, (%rax)
-# CHECK-NEXT: - - - 1.80 0.20 - 2.00 - - - 2.00 - - - vcvtps2ph $0, %ymm0, %xmm2
-# CHECK-NEXT: - - - 0.20 1.80 - 2.00 - - 1.00 2.00 - - - vcvtps2ph $0, %ymm0, (%rax)
+# CHECK-NEXT: - - - 1.86 0.14 - 2.00 - - - 2.00 - - - vcvtps2ph $0, %ymm0, %xmm2
+# CHECK-NEXT: - - - 0.14 1.86 - 2.00 - - 1.00 2.00 - - - vcvtps2ph $0, %ymm0, (%rax)
+
Modified: llvm/trunk/test/tools/llvm-mca/X86/cpus.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/cpus.s?rev=329694&r1=329693&r2=329694&view=diff
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/cpus.s (original)
+++ llvm/trunk/test/tools/llvm-mca/X86/cpus.s Tue Apr 10 05:50:03 2018
@@ -1,27 +1,73 @@
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=btver2 < %s | FileCheck --check-prefix=ALL --check-prefix=BTVER2 %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=znver1 < %s | FileCheck --check-prefix=ALL --check-prefix=ZNVER1 %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=sandybridge < %s | FileCheck --check-prefix=ALL --check-prefix=SANDYBRIDGE %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=ivybridge < %s | FileCheck --check-prefix=ALL --check-prefix=IVYBRIDGE %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=haswell < %s | FileCheck --check-prefix=ALL --check-prefix=HASWELL %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=broadwell < %s | FileCheck --check-prefix=ALL --check-prefix=BROADWELL %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=knl < %s | FileCheck --check-prefix=ALL --check-prefix=KNL %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=skylake < %s | FileCheck --check-prefix=ALL --check-prefix=SKX %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=skylake-avx512 < %s | FileCheck --check-prefix=ALL --check-prefix=SKX-AVX512 %s
-# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=slm < %s | FileCheck --check-prefix=ALL --check-prefix=SLM %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=btver2 -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=BTVER2 %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=znver1 -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=ZNVER1 %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=sandybridge -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=SANDYBRIDGE %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=ivybridge -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=IVYBRIDGE %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=haswell -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=HASWELL %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=broadwell -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=BROADWELL %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=knl -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=KNL %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=skylake -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=SKX %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=skylake-avx512 -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=SKX-AVX512 %s
+# RUN: llvm-mca %s -mtriple=x86_64-unknown-unknown -mcpu=slm -resource-pressure=false -instruction-info=false < %s | FileCheck --check-prefix=ALL --check-prefix=SLM %s
add %edi, %eax
-# ALL: Iterations: 70
-# ALL-NEXT: Instructions: 70
+# BTVER2: Iterations: 100
+# BTVER2-NEXT: Instructions: 100
+# BTVER2-NEXT: Total Cycles: 103
+# BTVER2-NEXT: Dispatch Width: 2
+# BTVER2-NEXT: IPC: 0.97
-# BTVER2: Dispatch Width: 2
-# ZNVER1: Dispatch Width: 4
-# SANDYBRIDGE: Dispatch Width: 4
-# IVYBRIDGE: Dispatch Width: 4
-# HASWELL: Dispatch Width: 4
-# BROADWELL: Dispatch Width: 4
-# KNL: Dispatch Width: 4
-# SKX: Dispatch Width: 6
-# SKX-AVX512: Dispatch Width: 6
-# SLM: Dispatch Width: 2
+# SLM: Iterations: 100
+# SLM-NEXT: Instructions: 100
+# SLM-NEXT: Total Cycles: 103
+# SLM-NEXT: Dispatch Width: 2
+# SLM-NEXT: IPC: 0.97
+
+# BROADWELL: Iterations: 100
+# BROADWELL-NEXT: Instructions: 100
+# BROADWELL-NEXT: Total Cycles: 103
+# BROADWELL-NEXT: Dispatch Width: 4
+# BROADWELL-NEXT: IPC: 0.97
+
+# HASWELL: Iterations: 100
+# HASWELL-NEXT: Instructions: 100
+# HASWELL-NEXT: Total Cycles: 103
+# HASWELL-NEXT: Dispatch Width: 4
+# HASWELL-NEXT: IPC: 0.97
+
+# IVYBRIDGE: Iterations: 100
+# IVYBRIDGE-NEXT: Instructions: 100
+# IVYBRIDGE-NEXT: Total Cycles: 103
+# IVYBRIDGE-NEXT: Dispatch Width: 4
+# IVYBRIDGE-NEXT: IPC: 0.97
+
+# KNL: Iterations: 100
+# KNL-NEXT: Instructions: 100
+# KNL-NEXT: Total Cycles: 103
+# KNL-NEXT: Dispatch Width: 4
+# KNL-NEXT: IPC: 0.97
+
+# SANDYBRIDGE: Iterations: 100
+# SANDYBRIDGE-NEXT: Instructions: 100
+# SANDYBRIDGE-NEXT: Total Cycles: 103
+# SANDYBRIDGE-NEXT: Dispatch Width: 4
+# SANDYBRIDGE-NEXT: IPC: 0.97
+
+# ZNVER1: Iterations: 100
+# ZNVER1-NEXT: Instructions: 100
+# ZNVER1-NEXT: Total Cycles: 103
+# ZNVER1-NEXT: Dispatch Width: 4
+# ZNVER1-NEXT: IPC: 0.97
+
+# SKX: Iterations: 100
+# SKX-NEXT: Instructions: 100
+# SKX-NEXT: Total Cycles: 103
+# SKX-NEXT: Dispatch Width: 6
+# SKX-NEXT: IPC: 0.97
+
+# SKX-AVX512: Iterations: 100
+# SKX-AVX512-NEXT: Instructions: 100
+# SKX-AVX512-NEXT: Total Cycles: 103
+# SKX-AVX512-NEXT: Dispatch Width: 6
+# SKX-AVX512-NEXT: IPC: 0.97
Modified: llvm/trunk/test/tools/llvm-mca/X86/default-iterations.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/default-iterations.s?rev=329694&r1=329693&r2=329694&view=diff
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/default-iterations.s (original)
+++ llvm/trunk/test/tools/llvm-mca/X86/default-iterations.s Tue Apr 10 05:50:03 2018
@@ -1,11 +1,29 @@
-# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 < %s 2>&1 | FileCheck --check-prefix=DEFAULT %s
-# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=0 < %s 2>&1 | FileCheck --check-prefix=DEFAULT %s
-# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=1 < %s 2>&1 | FileCheck --check-prefix=CUSTOM %s
+# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -resource-pressure=false < %s | FileCheck --check-prefix=ALL --check-prefix=DEFAULT %s
+# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=0 -resource-pressure=false < %s | FileCheck --check-prefix=ALL --check-prefix=DEFAULT %s
+# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=1 -resource-pressure=false < %s | FileCheck --check-prefix=ALL --check-prefix=CUSTOM %s
add %eax, %eax
-# DEFAULT: Iterations: 70
-# DEFAULT-NEXT: Instructions: 70
+# CUSTOM: Iterations: 1
+# CUSTOM-NEXT: Instructions: 1
+# CUSTOM-NEXT: Total Cycles: 4
+# CUSTOM-NEXT: Dispatch Width: 2
+# CUSTOM-NEXT: IPC: 0.25
+
+# DEFAULT: Iterations: 100
+# DEFAULT-NEXT: Instructions: 100
+# DEFAULT-NEXT: Total Cycles: 103
+# DEFAULT-NEXT: Dispatch Width: 2
+# DEFAULT-NEXT: IPC: 0.97
+
+# ALL: Instruction Info:
+# ALL-NEXT: [1]: #uOps
+# ALL-NEXT: [2]: Latency
+# ALL-NEXT: [3]: RThroughput
+# ALL-NEXT: [4]: MayLoad
+# ALL-NEXT: [5]: MayStore
+# ALL-NEXT: [6]: HasSideEffects
+
+# ALL: [1] [2] [3] [4] [5] [6] Instructions:
+# ALL-NEXT: 1 1 0.50 addl %eax, %eax
-# CUSTOM: Iterations: 1
-# CUSTOM-NEXT: Instructions: 1
Modified: llvm/trunk/tools/llvm-mca/README.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-mca/README.txt?rev=329694&r1=329693&r2=329694&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-mca/README.txt (original)
+++ llvm/trunk/tools/llvm-mca/README.txt Tue Apr 10 05:50:03 2018
@@ -59,7 +59,7 @@ sequence of MCInst is then analyzed by a
performance report.
The Backend module internally emulates the execution of the machine code
-sequence in a loop of iterations (which by default is 70). At the end of this
+sequence in a loop of iterations (which by default is 100). At the end of this
process, the backend collects a number of statistics which are then printed out
in the form of a report.
Modified: llvm/trunk/tools/llvm-mca/SourceMgr.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-mca/SourceMgr.h?rev=329694&r1=329693&r2=329694&view=diff
==============================================================================
--- llvm/trunk/tools/llvm-mca/SourceMgr.h (original)
+++ llvm/trunk/tools/llvm-mca/SourceMgr.h Tue Apr 10 05:50:03 2018
@@ -28,7 +28,7 @@ class SourceMgr {
const InstVec &Sequence;
unsigned Current;
unsigned Iterations;
- static const unsigned DefaultIterations = 70;
+ static const unsigned DefaultIterations = 100;
public:
SourceMgr(const InstVec &MCInstSequence, unsigned NumIterations)
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