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llvm-mirror/test/CodeGen/X86/avx512-fsel.ll
Guy Blank 4de6e44893 [X86][FastISel] Use a COPY from K register to a GPR instead of a K operation
The KORTEST was introduced due to a bug where a TEST instruction used a K register.
but, turns out that the opposite case of KORTEST using a GPR is now happening

The change removes the KORTEST flow and adds a COPY instruction from the K reg to a GPR.

Differential Revision: https://reviews.llvm.org/D24953

llvm-svn: 282580
2016-09-28 11:22:17 +00:00

56 lines
1.7 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -O0 -mattr=+avx512f < %s | FileCheck %s
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.11.0"
define i32 @test(float %a, float %b) {
; CHECK-LABEL: test:
; CHECK: ## BB#0:
; CHECK-NEXT: pushq %rax
; CHECK-NEXT: Ltmp0:
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: movb $1, %al
; CHECK-NEXT: vucomiss %xmm1, %xmm0
; CHECK-NEXT: setnp %cl
; CHECK-NEXT: sete %dl
; CHECK-NEXT: setp %sil
; CHECK-NEXT: setne %dil
; CHECK-NEXT: andb %cl, %dl
; CHECK-NEXT: ## implicit-def: %R8D
; CHECK-NEXT: movb %dl, %r8b
; CHECK-NEXT: andl $1, %r8d
; CHECK-NEXT: kmovw %r8d, %k0
; CHECK-NEXT: orb %sil, %dil
; CHECK-NEXT: ## implicit-def: %R8D
; CHECK-NEXT: movb %dil, %r8b
; CHECK-NEXT: andl $1, %r8d
; CHECK-NEXT: kmovw %r8d, %k1
; CHECK-NEXT: kmovw %k1, %ecx
; CHECK-NEXT: testb $1, %cl
; CHECK-NEXT: movb %al, {{[0-9]+}}(%rsp) ## 1-byte Spill
; CHECK-NEXT: kmovw %k0, {{[0-9]+}}(%rsp) ## 2-byte Spill
; CHECK-NEXT: jne LBB0_1
; CHECK-NEXT: jmp LBB0_2
; CHECK-NEXT: LBB0_1: ## %L_0
; CHECK-NEXT: callq ___assert_rtn
; CHECK-NEXT: LBB0_2: ## %L_1
; CHECK-NEXT: xorl %eax, %eax
; CHECK-NEXT: popq %rcx
; CHECK-NEXT: retq
%x10 = fcmp oeq float %a, %b
%x11 = xor i1 %x10, true
br i1 %x11, label %L_0, label %L_1
L_0: ; preds = %2
call void @__assert_rtn()
unreachable
; No predecessors!
L_1: ; preds = %2
ret i32 0
}
; Function Attrs: noreturn
declare void @__assert_rtn()