59 lines
1.7 KiB
LLVM
59 lines
1.7 KiB
LLVM
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
||
|
|
; RUN: llc < %s -mtriple=i686-unknown -mattr=+sse2 | FileCheck %s --check-prefix=X86
|
||
|
|
; RUN: llc < %s -mtriple=x86_64-unknown -mattr=+avx | FileCheck %s --check-prefix=X64
|
||
|
|
|
||
|
|
; These tests just check that the plumbing is in place for @llvm.bswap. The
|
||
|
|
; actual output is massive at the moment as llvm.bswap is not yet legal.
|
||
|
|
|
||
|
|
declare i32 @llvm.bswap.i32(i32) readnone
|
||
|
|
declare i32 @llvm.bswap.v4i32(i32) readnone
|
||
|
|
|
||
|
|
; fold (bswap undef) -> undef
|
||
|
|
define i32 @test_undef() nounwind {
|
||
|
|
; X86-LABEL: test_undef:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: test_undef:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%b = call i32 @llvm.bswap.i32(i32 undef)
|
||
|
|
ret i32 %b
|
||
|
|
}
|
||
|
|
|
||
|
|
; fold (bswap (bswap x)) -> x
|
||
|
|
define i32 @test_bswap_bswap(i32 %a0) nounwind {
|
||
|
|
; X86-LABEL: test_bswap_bswap:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: test_bswap_bswap:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movl %edi, %eax
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%b = call i32 @llvm.bswap.i32(i32 %a0)
|
||
|
|
%c = call i32 @llvm.bswap.i32(i32 %b)
|
||
|
|
ret i32 %c
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @test_demandedbits_bswap(i32 %a0) nounwind {
|
||
|
|
; X86-LABEL: test_demandedbits_bswap:
|
||
|
|
; X86: # %bb.0:
|
||
|
|
; X86-NEXT: movl {{[0-9]+}}(%esp), %eax
|
||
|
|
; X86-NEXT: bswapl %eax
|
||
|
|
; X86-NEXT: andl $-65536, %eax # imm = 0xFFFF0000
|
||
|
|
; X86-NEXT: retl
|
||
|
|
;
|
||
|
|
; X64-LABEL: test_demandedbits_bswap:
|
||
|
|
; X64: # %bb.0:
|
||
|
|
; X64-NEXT: movl %edi, %eax
|
||
|
|
; X64-NEXT: bswapl %eax
|
||
|
|
; X64-NEXT: andl $-65536, %eax # imm = 0xFFFF0000
|
||
|
|
; X64-NEXT: retq
|
||
|
|
%b = or i32 %a0, 4278190080
|
||
|
|
%c = call i32 @llvm.bswap.i32(i32 %b)
|
||
|
|
%d = and i32 %c, 4294901760
|
||
|
|
ret i32 %d
|
||
|
|
}
|