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110 lines
3.4 KiB
LLVM
110 lines
3.4 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 | FileCheck %s --check-prefixes=CHECK,SSE
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; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx | FileCheck %s --check-prefixes=CHECK,AVX
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; PR31455 - https://bugs.llvm.org/show_bug.cgi?id=31455
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; We have to assume that errno can be set, so we have to make a libcall in that case.
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; But it's better for perf to check that the argument is valid rather than the result of
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; sqrtss/sqrtsd.
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; Note: This is really a test of the -partially-inline-libcalls IR pass (and we have an IR test
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; for that), but we're checking the final asm to make sure that comes out as expected too.
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define float @f(float %val) nounwind {
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; SSE-LABEL: f:
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; SSE: # %bb.0:
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; SSE-NEXT: xorps %xmm1, %xmm1
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; SSE-NEXT: ucomiss %xmm1, %xmm0
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; SSE-NEXT: jb .LBB0_2
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; SSE-NEXT: # %bb.1: # %.split
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; SSE-NEXT: sqrtss %xmm0, %xmm0
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; SSE-NEXT: retq
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; SSE-NEXT: .LBB0_2: # %call.sqrt
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; SSE-NEXT: jmp sqrtf # TAILCALL
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;
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; AVX-LABEL: f:
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; AVX: # %bb.0:
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; AVX-NEXT: vxorps %xmm1, %xmm1, %xmm1
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; AVX-NEXT: vucomiss %xmm1, %xmm0
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; AVX-NEXT: jb .LBB0_2
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; AVX-NEXT: # %bb.1: # %.split
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; AVX-NEXT: vsqrtss %xmm0, %xmm0, %xmm0
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; AVX-NEXT: retq
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; AVX-NEXT: .LBB0_2: # %call.sqrt
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; AVX-NEXT: jmp sqrtf # TAILCALL
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%res = tail call float @sqrtf(float %val)
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ret float %res
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}
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define double @d(double %val) nounwind {
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; SSE-LABEL: d:
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; SSE: # %bb.0:
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; SSE-NEXT: xorpd %xmm1, %xmm1
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; SSE-NEXT: ucomisd %xmm1, %xmm0
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; SSE-NEXT: jb .LBB1_2
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; SSE-NEXT: # %bb.1: # %.split
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; SSE-NEXT: sqrtsd %xmm0, %xmm0
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; SSE-NEXT: retq
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; SSE-NEXT: .LBB1_2: # %call.sqrt
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; SSE-NEXT: jmp sqrt # TAILCALL
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;
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; AVX-LABEL: d:
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; AVX: # %bb.0:
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; AVX-NEXT: vxorpd %xmm1, %xmm1, %xmm1
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; AVX-NEXT: vucomisd %xmm1, %xmm0
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; AVX-NEXT: jb .LBB1_2
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; AVX-NEXT: # %bb.1: # %.split
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; AVX-NEXT: vsqrtsd %xmm0, %xmm0, %xmm0
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; AVX-NEXT: retq
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; AVX-NEXT: .LBB1_2: # %call.sqrt
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; AVX-NEXT: jmp sqrt # TAILCALL
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%res = tail call double @sqrt(double %val)
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ret double %res
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}
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define double @minsize(double %x, double %y) minsize {
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; SSE-LABEL: minsize:
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; SSE: # %bb.0:
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; SSE-NEXT: mulsd %xmm0, %xmm0
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; SSE-NEXT: mulsd %xmm1, %xmm1
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; SSE-NEXT: addsd %xmm0, %xmm1
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; SSE-NEXT: sqrtsd %xmm1, %xmm0
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; SSE-NEXT: retq
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;
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; AVX-LABEL: minsize:
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; AVX: # %bb.0:
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; AVX-NEXT: vmulsd %xmm0, %xmm0, %xmm0
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; AVX-NEXT: vmulsd %xmm1, %xmm1, %xmm1
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; AVX-NEXT: vaddsd %xmm1, %xmm0, %xmm0
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; AVX-NEXT: vsqrtsd %xmm0, %xmm0, %xmm0
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; AVX-NEXT: retq
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%t3 = fmul fast double %x, %x
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%t4 = fmul fast double %y, %y
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%t5 = fadd fast double %t3, %t4
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%t6 = tail call fast double @llvm.sqrt.f64(double %t5)
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ret double %t6
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}
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; Partial reg avoidance may involve register allocation
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; rather than adding an instruction.
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define double @partial_dep_minsize(double %x, double %y) minsize {
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; SSE-LABEL: partial_dep_minsize:
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; SSE: # %bb.0:
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; SSE-NEXT: sqrtsd %xmm1, %xmm0
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; SSE-NEXT: addsd %xmm1, %xmm0
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; SSE-NEXT: retq
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;
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; AVX-LABEL: partial_dep_minsize:
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; AVX: # %bb.0:
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; AVX-NEXT: vsqrtsd %xmm1, %xmm1, %xmm0
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; AVX-NEXT: vaddsd %xmm1, %xmm0, %xmm0
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; AVX-NEXT: retq
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%t6 = tail call fast double @llvm.sqrt.f64(double %y)
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%t = fadd fast double %t6, %y
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ret double %t
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}
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declare float @sqrtf(float)
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declare double @sqrt(double)
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declare double @llvm.sqrt.f64(double)
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