[llvm] r341197 - [X86][BtVer2] Add an llvm-mca test that shows how the read latency of AVX broadcastss on ymm registers is incorrectly set.

[Andrea Di Biagio via llvm-commits]

Author: adibiagio
Date: Fri Aug 31 03:39:33 2018
New Revision: 341197

URL: http://llvm.org/viewvc/llvm-project?rev=341197&view=rev
Log:
[X86][BtVer2] Add an llvm-mca test that shows how the read latency of AVX broadcastss on ymm registers is incorrectly set.


Added:
    llvm/trunk/test/tools/llvm-mca/X86/BtVer2/vbroadcast-operand-latency.s

Added: llvm/trunk/test/tools/llvm-mca/X86/BtVer2/vbroadcast-operand-latency.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/tools/llvm-mca/X86/BtVer2/vbroadcast-operand-latency.s?rev=341197&view=auto
==============================================================================
--- llvm/trunk/test/tools/llvm-mca/X86/BtVer2/vbroadcast-operand-latency.s (added)
+++ llvm/trunk/test/tools/llvm-mca/X86/BtVer2/vbroadcast-operand-latency.s Fri Aug 31 03:39:33 2018
@@ -0,0 +1,73 @@
+# 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 < %s | FileCheck %s
+
+leaq 8(%rsp, %rdi, 2), %rax
+vbroadcastss (%rax), %ymm0
+
+# CHECK:      Iterations:        100
+# CHECK-NEXT: Instructions:      200
+# CHECK-NEXT: Total Cycles:      208
+# CHECK-NEXT: Total uOps:        300
+
+# CHECK:      Dispatch Width:    2
+# CHECK-NEXT: uOps Per Cycle:    1.44
+# CHECK-NEXT: IPC:               0.96
+# 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      2     1.00                        leaq	8(%rsp,%rdi,2), %rax
+# CHECK-NEXT:  2      6     2.00    *                   vbroadcastss	(%rax), %ymm0
+
+# 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    -     2.00   2.00   1.00   1.00   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    -      -      -      -      -      -      -     1.00    -      -      -      -     leaq	8(%rsp,%rdi,2), %rax
+# CHECK-NEXT:  -      -      -     2.00   2.00   1.00   1.00   1.00    -      -      -      -      -      -     vbroadcastss	(%rax), %ymm0
+
+# CHECK:      Timeline view:
+# CHECK-NEXT:                     0123
+# CHECK-NEXT: Index     0123456789
+
+# CHECK:      [0,0]     DeeER.    .  .   leaq	8(%rsp,%rdi,2), %rax
+# CHECK-NEXT: [0,1]     .DeeeeeeER.  .   vbroadcastss	(%rax), %ymm0
+# CHECK-NEXT: [1,0]     . DeeE---R.  .   leaq	8(%rsp,%rdi,2), %rax
+# CHECK-NEXT: [1,1]     .  DeeeeeeER .   vbroadcastss	(%rax), %ymm0
+# CHECK-NEXT: [2,0]     .   DeeE---R .   leaq	8(%rsp,%rdi,2), %rax
+# CHECK-NEXT: [2,1]     .    DeeeeeeER   vbroadcastss	(%rax), %ymm0
+
+# 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     1.0    1.0    2.0       leaq	8(%rsp,%rdi,2), %rax
+# CHECK-NEXT: 1.     3     1.0    1.0    0.0       vbroadcastss	(%rax), %ymm0