Files
clang-p2996/llvm/test/CodeGen/X86/sqrt-partial.ll
Wang, Pengfei c22dc71b12 [CodeGen][X86] Remove unused trivial check-prefixes from all CodeGen/X86 directory.
I had manually removed unused prefixes from CodeGen/X86 directory for more than 100 tests.
I checked the change history for each of them at the beginning, and then I mainly focused on the format since I found all of the unused prefixes were result from either insensible copy or residuum after functional update.
I think it's OK to remove the remaining X86 tests by script now. I wrote a rough script which works for me in most tests. I put it in llvm/utils temporarily for review and hope it may help other components owners.
The tests in this patch are all generated by the tool and checked by update tool for the autogenerated tests. I skimmed them and checked about 30 tests and didn't find any unexpected changes.

Reviewed By: mtrofin, MaskRay

Differential Revision: https://reviews.llvm.org/D91496
2020-11-16 09:45:55 +08:00

110 lines
3.4 KiB
LLVM

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