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[AVX-512] Fix another case where we are copying from a mask register …
…using AH/BH/CH/DH with fastisel. Fixes PR32256. Still planning to do an audit for other possible cases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297678 91177308-0d34-0410-b5e6-96231b3b80d8
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | ||
; RUN: llc < %s -fast-isel -mtriple=i686-unknown-unknown -O0 -mcpu=skx | FileCheck %s | ||
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@c = external global i8, align 1 | ||
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; Function Attrs: noinline nounwind | ||
define void @_Z1av() { | ||
; CHECK-LABEL: _Z1av: | ||
; CHECK: # BB#0: # %entry | ||
; CHECK-NEXT: pushl %ebx | ||
; CHECK-NEXT: .Lcfi0: | ||
; CHECK-NEXT: .cfi_def_cfa_offset 8 | ||
; CHECK-NEXT: subl $8, %esp | ||
; CHECK-NEXT: .Lcfi1: | ||
; CHECK-NEXT: .cfi_def_cfa_offset 16 | ||
; CHECK-NEXT: .Lcfi2: | ||
; CHECK-NEXT: .cfi_offset %ebx, -8 | ||
; CHECK-NEXT: xorl %eax, %eax | ||
; CHECK-NEXT: movb %al, %cl | ||
; CHECK-NEXT: movb $1, %dl | ||
; CHECK-NEXT: movb c, %ch | ||
; CHECK-NEXT: # implicit-def: %EAX | ||
; CHECK-NEXT: movb %ch, %al | ||
; CHECK-NEXT: andl $1, %eax | ||
; CHECK-NEXT: kmovw %eax, %k0 | ||
; CHECK-NEXT: kmovq %k0, %k1 | ||
; CHECK-NEXT: kxnorw %k0, %k0, %k2 | ||
; CHECK-NEXT: kshiftrw $15, %k2, %k2 | ||
; CHECK-NEXT: kxorw %k2, %k0, %k0 | ||
; CHECK-NEXT: kmovb %k0, %ebx | ||
; CHECK-NEXT: testb $1, %bl | ||
; CHECK-NEXT: kmovb %ecx, %k0 | ||
; CHECK-NEXT: kmovw %k1, {{[0-9]+}}(%esp) # 2-byte Spill | ||
; CHECK-NEXT: movb %dl, {{[0-9]+}}(%esp) # 1-byte Spill | ||
; CHECK-NEXT: kmovw %k0, (%esp) # 2-byte Spill | ||
; CHECK-NEXT: jne .LBB0_1 | ||
; CHECK-NEXT: jmp .LBB0_2 | ||
; CHECK-NEXT: .LBB0_1: # %land.rhs | ||
; CHECK-NEXT: xorl %eax, %eax | ||
; CHECK-NEXT: movb %al, %cl | ||
; CHECK-NEXT: kmovb %ecx, %k0 | ||
; CHECK-NEXT: kmovw %k0, (%esp) # 2-byte Spill | ||
; CHECK-NEXT: jmp .LBB0_2 | ||
; CHECK-NEXT: .LBB0_2: # %land.end | ||
; CHECK-NEXT: kmovw (%esp), %k0 # 2-byte Reload | ||
; CHECK-NEXT: kmovb %k0, %eax | ||
; CHECK-NEXT: andb $1, %al | ||
; CHECK-NEXT: movb %al, {{[0-9]+}}(%esp) | ||
; CHECK-NEXT: addl $8, %esp | ||
; CHECK-NEXT: popl %ebx | ||
; CHECK-NEXT: retl | ||
entry: | ||
%b = alloca i8, align 1 | ||
%0 = load i8, i8* @c, align 1 | ||
%tobool = trunc i8 %0 to i1 | ||
%lnot = xor i1 %tobool, true | ||
br i1 %lnot, label %land.rhs, label %land.end | ||
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land.rhs: ; preds = %entry | ||
br label %land.end | ||
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land.end: ; preds = %land.rhs, %entry | ||
%1 = phi i1 [ false, %entry ], [ false, %land.rhs ] | ||
%conv = zext i1 %1 to i8 | ||
store i8 %conv, i8* %b, align 1 | ||
ret void | ||
} |