0aef747b84
The motivation is that the update script has at least two deviations (`<...>@GOT`/`<...>@PLT`/ and not hiding pointer arithmetics) from what pretty much all the checklines were generated with, and most of the tests are still not updated, so each time one of the non-up-to-date tests is updated to see the effect of the code change, there is a lot of noise. Instead of having to deal with that each time, let's just deal with everything at once. This has been done via: ``` cd llvm-project/llvm/test/CodeGen/X86 grep -rl "; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py" | xargs -L1 <...>/llvm-project/llvm/utils/update_llc_test_checks.py --llc-binary <...>/llvm-project/build/bin/llc ``` Not all tests were regenerated, however.
100 lines
2.9 KiB
LLVM
100 lines
2.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx | FileCheck %s
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declare double @sin(double %f)
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; When the subs are strict, they can't be removed because of signed zero.
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define double @strict(double %e) nounwind {
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; CHECK-LABEL: strict:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: vxorpd %xmm1, %xmm1, %xmm1
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; CHECK-NEXT: vsubsd %xmm0, %xmm1, %xmm0
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; CHECK-NEXT: callq sin@PLT
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; CHECK-NEXT: vxorpd %xmm1, %xmm1, %xmm1
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; CHECK-NEXT: vsubsd %xmm0, %xmm1, %xmm0
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: retq
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%f = fsub double 0.0, %e
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%g = call double @sin(double %f) readonly
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%h = fsub double 0.0, %g
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ret double %h
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}
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; 'fast' implies no-signed-zeros, so the negates fold away.
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; The 'sin' does not need any fast-math-flags for this transform.
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define double @fast(double %e) nounwind {
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; CHECK-LABEL: fast:
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; CHECK: # %bb.0:
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; CHECK-NEXT: jmp sin@PLT # TAILCALL
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%f = fsub fast double 0.0, %e
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%g = call double @sin(double %f) readonly
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%h = fsub fast double 0.0, %g
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ret double %h
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}
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; No-signed-zeros is all that we need for this transform.
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define double @nsz(double %e) nounwind {
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; CHECK-LABEL: nsz:
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; CHECK: # %bb.0:
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; CHECK-NEXT: jmp sin@PLT # TAILCALL
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%f = fsub nsz double 0.0, %e
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%g = call double @sin(double %f) readonly
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%h = fsub nsz double 0.0, %g
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ret double %h
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}
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; The 1st negate is strict, so we can't kill that sub, but the 2nd disappears.
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define double @semi_strict1(double %e) nounwind {
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; CHECK-LABEL: semi_strict1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: vxorpd %xmm1, %xmm1, %xmm1
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; CHECK-NEXT: vsubsd %xmm0, %xmm1, %xmm0
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; CHECK-NEXT: callq sin@PLT
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; CHECK-NEXT: vxorpd {{\.?LCPI[0-9]+_[0-9]+}}(%rip), %xmm0, %xmm0
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: retq
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%f = fsub double 0.0, %e
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%g = call double @sin(double %f) readonly
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%h = fsub nsz double 0.0, %g
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ret double %h
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}
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; The 2nd negate is strict, so we can't kill it. It becomes an add of zero instead.
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define double @semi_strict2(double %e) nounwind {
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; CHECK-LABEL: semi_strict2:
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; CHECK: # %bb.0:
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; CHECK-NEXT: pushq %rax
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; CHECK-NEXT: callq sin@PLT
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; CHECK-NEXT: vxorpd %xmm1, %xmm1, %xmm1
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; CHECK-NEXT: vaddsd %xmm1, %xmm0, %xmm0
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; CHECK-NEXT: popq %rax
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; CHECK-NEXT: retq
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%f = fsub nsz double 0.0, %e
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%g = call double @sin(double %f) readonly
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%h = fsub double 0.0, %g
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ret double %h
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}
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; FIXME:
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; Auto-upgrade function attribute to IR-level fast-math-flags.
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define double @fn_attr(double %e) nounwind #0 {
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; CHECK-LABEL: fn_attr:
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; CHECK: # %bb.0:
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; CHECK-NEXT: jmp sin@PLT # TAILCALL
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%f = fsub double 0.0, %e
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%g = call double @sin(double %f) readonly
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%h = fsub double 0.0, %g
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ret double %h
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}
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attributes #0 = { "unsafe-fp-math"="true" "no-signed-zeros-fp-math"="true" }
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