[X86] Add llvm-mca tests that show how operand latency is wrongly computed for SSE sqrtss/sd and rcpss.
According to the timeline view, sqrtss/sd/rcpss start executing before the load address for the memory operand is available. This problem is caused by the presence of a ReadAfterLd (a ReadAdvance). Those unary operations should not specify a ReadAdvance at all. llvm-svn: 341213
This commit is contained in:
Andrea Di Biagio
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80e1b5eb34
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69da3f3df6
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# NOTE: Assertions have been autogenerated by utils/update_mca_test_checks.py
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# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=btver2 -iterations=1 -all-views=false -timeline < %s | FileCheck %s -check-prefix=ALL -check-prefix=BTVER2
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# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=znver1 -iterations=1 -all-views=false -timeline < %s | FileCheck %s -check-prefix=ALL -check-prefix=ZNVER1
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# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=haswell -iterations=1 -all-views=false -timeline < %s | FileCheck %s -check-prefix=ALL -check-prefix=HASWELL
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# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=broadwell -iterations=1 -all-views=false -timeline < %s | FileCheck %s -check-prefix=ALL -check-prefix=BROADWELL
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# RUN: llvm-mca -mtriple=x86_64-unknown-unknown -mcpu=skylake -iterations=1 -all-views=false -timeline < %s | FileCheck %s -check-prefix=ALL -check-prefix=SKYLAKE
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#LLVM-MCA-BEGIN test_sqrtss
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leaq 8(%rsp, %rdi, 2), %rax
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sqrtss (%rax), %xmm1
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#LLVM-MCA-END
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#LLVM-MCA-BEGIN test_sqrtsd
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leaq 8(%rsp, %rdi, 2), %rax
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sqrtsd (%rax), %xmm1
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#LLVM-MCA-END
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#LLVM-MCA-BEGIN test_rsqrtss
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leaq 8(%rsp, %rdi, 2), %rax
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rsqrtss (%rax), %xmm1
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#LLVM-MCA-END
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#LLVM-MCA-BEGIN test_rcp
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leaq 8(%rsp, %rdi, 2), %rax
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rcpss (%rax), %xmm1
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#LLVM-MCA-END
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# ALL: [0] Code Region - test_sqrtss
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# ALL: Timeline view:
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# BROADWELL-NEXT: 012345678
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# BROADWELL-NEXT: Index 0123456789
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# BTVER2-NEXT: 0123456789
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# BTVER2-NEXT: Index 0123456789 012345678
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# HASWELL-NEXT: 012345678
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# HASWELL-NEXT: Index 0123456789
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# SKYLAKE-NEXT: 0123456789
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# SKYLAKE-NEXT: Index 0123456789
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# ZNVER1-NEXT: 0123456789
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# ZNVER1-NEXT: Index 0123456789 0123456789
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# ZNVER1: [0,0] DeER . . . . . . leaq 8(%rsp,%rdi,2), %rax
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# ZNVER1-NEXT: [0,1] DeeeeeeeeeeeeeeeeeeeeeeeeeeeER sqrtss (%rax), %xmm1
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# SKYLAKE: [0,0] DeER . . . . leaq 8(%rsp,%rdi,2), %rax
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# SKYLAKE-NEXT: [0,1] DeeeeeeeeeeeeeeeeeER sqrtss (%rax), %xmm1
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# BROADWELL: [0,0] DeER . . . . leaq 8(%rsp,%rdi,2), %rax
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# BROADWELL-NEXT: [0,1] DeeeeeeeeeeeeeeeeER sqrtss (%rax), %xmm1
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# HASWELL: [0,0] DeER . . . . leaq 8(%rsp,%rdi,2), %rax
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# HASWELL-NEXT: [0,1] DeeeeeeeeeeeeeeeeER sqrtss (%rax), %xmm1
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# BTVER2: [0,0] DeeER. . . . . . leaq 8(%rsp,%rdi,2), %rax
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# BTVER2-NEXT: [0,1] DeeeeeeeeeeeeeeeeeeeeeeeeeeER sqrtss (%rax), %xmm1
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# ALL: Average Wait times (based on the timeline view):
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# ALL-NEXT: [0]: Executions
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# ALL-NEXT: [1]: Average time spent waiting in a scheduler's queue
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# ALL-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
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# ALL-NEXT: [3]: Average time elapsed from WB until retire stage
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# ALL: [0] [1] [2] [3]
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# ALL-NEXT: 0. 1 1.0 1.0 0.0 leaq 8(%rsp,%rdi,2), %rax
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# ALL-NEXT: 1. 1 1.0 0.0 0.0 sqrtss (%rax), %xmm1
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# ALL: [1] Code Region - test_sqrtsd
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# ALL: Timeline view:
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# BROADWELL-NEXT: 0123456789
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# BROADWELL-NEXT: Index 0123456789 0123
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# BTVER2-NEXT: 0123456789 01234
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# BTVER2-NEXT: Index 0123456789 0123456789
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# HASWELL-NEXT: 0123456789
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# HASWELL-NEXT: Index 0123456789 0123
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# SKYLAKE-NEXT: 0123456789
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# SKYLAKE-NEXT: Index 0123456789 012345
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# ZNVER1-NEXT: 0123456789
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# ZNVER1-NEXT: Index 0123456789 0123456789
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# ZNVER1: [0,0] DeER . . . . . . leaq 8(%rsp,%rdi,2), %rax
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# ZNVER1-NEXT: [0,1] DeeeeeeeeeeeeeeeeeeeeeeeeeeeER sqrtsd (%rax), %xmm1
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# SKYLAKE: [0,0] DeER . . . . . leaq 8(%rsp,%rdi,2), %rax
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# SKYLAKE-NEXT: [0,1] DeeeeeeeeeeeeeeeeeeeeeeeER sqrtsd (%rax), %xmm1
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# BROADWELL: [0,0] DeER . . . . . leaq 8(%rsp,%rdi,2), %rax
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# BROADWELL-NEXT: [0,1] DeeeeeeeeeeeeeeeeeeeeeER sqrtsd (%rax), %xmm1
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# HASWELL: [0,0] DeER . . . . . leaq 8(%rsp,%rdi,2), %rax
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# HASWELL-NEXT: [0,1] DeeeeeeeeeeeeeeeeeeeeeER sqrtsd (%rax), %xmm1
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# BTVER2: [0,0] DeeER. . . . . . . leaq 8(%rsp,%rdi,2), %rax
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# BTVER2-NEXT: [0,1] DeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeER sqrtsd (%rax), %xmm1
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# ALL: Average Wait times (based on the timeline view):
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# ALL-NEXT: [0]: Executions
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# ALL-NEXT: [1]: Average time spent waiting in a scheduler's queue
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# ALL-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
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# ALL-NEXT: [3]: Average time elapsed from WB until retire stage
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# ALL: [0] [1] [2] [3]
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# ALL-NEXT: 0. 1 1.0 1.0 0.0 leaq 8(%rsp,%rdi,2), %rax
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# ALL-NEXT: 1. 1 1.0 0.0 0.0 sqrtsd (%rax), %xmm1
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# ALL: [2] Code Region - test_rsqrtss
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# SKYLAKE: Timeline view:
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# SKYLAKE-NEXT: 01
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# SKYLAKE-NEXT: Index 0123456789
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# BROADWELL: Timeline view:
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# BROADWELL-NEXT: 012
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# BROADWELL-NEXT: Index 0123456789
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# HASWELL: Timeline view:
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# HASWELL-NEXT: 012
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# HASWELL-NEXT: Index 0123456789
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# ZNVER1: Timeline view:
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# ZNVER1-NEXT: 01234
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# ZNVER1-NEXT: Index 0123456789
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# BTVER2: Timeline view:
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# BTVER2-NEXT: Index 0123456789
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# ZNVER1: [0,0] DeER . . . leaq 8(%rsp,%rdi,2), %rax
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# ZNVER1-NEXT: [0,1] DeeeeeeeeeeeeER rsqrtss (%rax), %xmm1
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# BROADWELL: [0,0] DeER . . . leaq 8(%rsp,%rdi,2), %rax
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# BROADWELL-NEXT: [0,1] DeeeeeeeeeeER rsqrtss (%rax), %xmm1
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# HASWELL: [0,0] DeER . . . leaq 8(%rsp,%rdi,2), %rax
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# HASWELL-NEXT: [0,1] DeeeeeeeeeeER rsqrtss (%rax), %xmm1
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# SKYLAKE: [0,0] DeER . .. leaq 8(%rsp,%rdi,2), %rax
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# SKYLAKE-NEXT: [0,1] DeeeeeeeeeER rsqrtss (%rax), %xmm1
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# BTVER2: [0,0] DeeER. . leaq 8(%rsp,%rdi,2), %rax
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# BTVER2-NEXT: [0,1] DeeeeeeeER rsqrtss (%rax), %xmm1
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# ALL: Average Wait times (based on the timeline view):
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# ALL-NEXT: [0]: Executions
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# ALL-NEXT: [1]: Average time spent waiting in a scheduler's queue
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# ALL-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
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# ALL-NEXT: [3]: Average time elapsed from WB until retire stage
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# ALL: [0] [1] [2] [3]
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# ALL-NEXT: 0. 1 1.0 1.0 0.0 leaq 8(%rsp,%rdi,2), %rax
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# ALL-NEXT: 1. 1 1.0 0.0 0.0 rsqrtss (%rax), %xmm1
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# ALL: [3] Code Region - test_rcp
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# SKYLAKE: Timeline view:
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# SKYLAKE-NEXT: 01
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# SKYLAKE-NEXT: Index 0123456789
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# BROADWELL: Timeline view:
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# BROADWELL-NEXT: 012
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# BROADWELL-NEXT: Index 0123456789
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# HASWELL: Timeline view:
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# HASWELL-NEXT: 012
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# HASWELL-NEXT: Index 0123456789
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# ZNVER1: Timeline view:
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# ZNVER1-NEXT: 01234
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# ZNVER1-NEXT: Index 0123456789
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# BTVER2: Timeline view:
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# BTVER2-NEXT: Index 0123456789
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# ZNVER1: [0,0] DeER . . . leaq 8(%rsp,%rdi,2), %rax
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# ZNVER1-NEXT: [0,1] DeeeeeeeeeeeeER rcpss (%rax), %xmm1
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# BROADWELL: [0,0] DeER . . . leaq 8(%rsp,%rdi,2), %rax
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# BROADWELL-NEXT: [0,1] DeeeeeeeeeeER rcpss (%rax), %xmm1
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# HASWELL: [0,0] DeER . . . leaq 8(%rsp,%rdi,2), %rax
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# HASWELL-NEXT: [0,1] DeeeeeeeeeeER rcpss (%rax), %xmm1
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# SKYLAKE: [0,0] DeER . .. leaq 8(%rsp,%rdi,2), %rax
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# SKYLAKE-NEXT: [0,1] DeeeeeeeeeER rcpss (%rax), %xmm1
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# BTVER2: [0,0] DeeER. . leaq 8(%rsp,%rdi,2), %rax
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# BTVER2-NEXT: [0,1] DeeeeeeeER rcpss (%rax), %xmm1
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# ALL: Average Wait times (based on the timeline view):
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# ALL-NEXT: [0]: Executions
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# ALL-NEXT: [1]: Average time spent waiting in a scheduler's queue
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# ALL-NEXT: [2]: Average time spent waiting in a scheduler's queue while ready
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# ALL-NEXT: [3]: Average time elapsed from WB until retire stage
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# ALL: [0] [1] [2] [3]
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# ALL-NEXT: 0. 1 1.0 1.0 0.0 leaq 8(%rsp,%rdi,2), %rax
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# ALL-NEXT: 1. 1 1.0 0.0 0.0 rcpss (%rax), %xmm1
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