Commit 69fff1fc authored by Sanjay Patel's avatar Sanjay Patel
Browse files

[x86] add tests for bswap/rotate; NFC

parent 8f7d3430

llvm/test/CodeGen/X86/rot16.ll

+70 −2
Original line number Diff line number Diff line 
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py

; RUN: llc < %s -mtriple=i686-unknown-unknown | FileCheck %s --check-prefix=X32

; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s --check-prefix=X64

; RUN: llc < %s -mtriple=i686--                | FileCheck %s --check-prefixes=X32,BASE32

; RUN: llc < %s -mtriple=i686--  -mattr=movbe  | FileCheck %s --check-prefixes=X32,MOVBE32

; RUN: llc < %s -mtriple=x86_64--              | FileCheck %s --check-prefixes=X64,BASE64

; RUN: llc < %s -mtriple=x86_64-- -mattr=movbe | FileCheck %s --check-prefixes=X64,MOVBE64



define i16 @foo(i16 %x, i16 %y, i16 %z) nounwind {

; X32-LABEL: foo:
@@ -230,3 +232,69 @@ define i16 @rot16_trunc(i32 %x, i32 %y) nounwind { 
	%t3 = trunc i32 %t2 to i16

	ret i16 %t3

}



define i16 @rotate16(i16 %x) {

; X32-LABEL: rotate16:

; X32:       # %bb.0:

; X32-NEXT:    movzwl {{[0-9]+}}(%esp), %eax

; X32-NEXT:    rolw $8, %ax

; X32-NEXT:    retl

;

; X64-LABEL: rotate16:

; X64:       # %bb.0:

; X64-NEXT:    movl %edi, %eax

; X64-NEXT:    rolw $8, %ax

; X64-NEXT:    # kill: def $ax killed $ax killed $eax

; X64-NEXT:    retq

  %r = call i16 @llvm.fshl.i16(i16 %x, i16 %x, i16 8)

  ret i16 %r

}



define void @rotate16_in_place_memory(i8* %p) {

; X32-LABEL: rotate16_in_place_memory:

; X32:       # %bb.0:

; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax

; X32-NEXT:    rolw $8, (%eax)

; X32-NEXT:    retl

;

; X64-LABEL: rotate16_in_place_memory:

; X64:       # %bb.0:

; X64-NEXT:    rolw $8, (%rdi)

; X64-NEXT:    retq

  %p0 = getelementptr i8, i8* %p, i64 0

  %p1 = getelementptr i8, i8* %p, i64 1

  %i0 = load i8, i8* %p0, align 1

  %i1 = load i8, i8* %p1, align 1

  store i8 %i1, i8* %p0, align 1

  store i8 %i0, i8* %p1, align 1

  ret void

}



define void @rotate16_memory(i8* %p, i8* %q) {

; X32-LABEL: rotate16_memory:

; X32:       # %bb.0:

; X32-NEXT:    movl {{[0-9]+}}(%esp), %eax

; X32-NEXT:    movl {{[0-9]+}}(%esp), %ecx

; X32-NEXT:    movzwl (%ecx), %ecx

; X32-NEXT:    rolw $8, %cx

; X32-NEXT:    movw %cx, (%eax)

; X32-NEXT:    retl

;

; X64-LABEL: rotate16_memory:

; X64:       # %bb.0:

; X64-NEXT:    movzwl (%rdi), %eax

; X64-NEXT:    rolw $8, %ax

; X64-NEXT:    movw %ax, (%rsi)

; X64-NEXT:    retq

  %p0 = getelementptr i8, i8* %p, i64 0

  %p1 = getelementptr i8, i8* %p, i64 1

  %q0 = getelementptr i8, i8* %q, i64 0

  %q1 = getelementptr i8, i8* %q, i64 1

  %i0 = load i8, i8* %p0, align 1

  %i1 = load i8, i8* %p1, align 1

  store i8 %i1, i8* %q0, align 1

  store i8 %i0, i8* %q1, align 1

  ret void

}



declare i16 @llvm.fshl.i16(i16, i16, i16)