blob: c7117be91ab471182ee5aaf97f89ab68078437ca [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
; Check that we recognize this idiom for rotation too:
; a << (b & (OpSize-1)) | a >> ((0 - b) & (OpSize-1))
define i32 @rotate_left_32(i32 %a, i32 %b) {
; CHECK-LABEL: rotate_left_32:
; CHECK: # BB#0:
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: roll %cl, %edi
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: retq
%and = and i32 %b, 31
%shl = shl i32 %a, %and
%t0 = sub i32 0, %b
%and3 = and i32 %t0, 31
%shr = lshr i32 %a, %and3
%or = or i32 %shl, %shr
ret i32 %or
}
define i32 @rotate_right_32(i32 %a, i32 %b) {
; CHECK-LABEL: rotate_right_32:
; CHECK: # BB#0:
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: rorl %cl, %edi
; CHECK-NEXT: movl %edi, %eax
; CHECK-NEXT: retq
%and = and i32 %b, 31
%shl = lshr i32 %a, %and
%t0 = sub i32 0, %b
%and3 = and i32 %t0, 31
%shr = shl i32 %a, %and3
%or = or i32 %shl, %shr
ret i32 %or
}
define i64 @rotate_left_64(i64 %a, i64 %b) {
; CHECK-LABEL: rotate_left_64:
; CHECK: # BB#0:
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: rolq %cl, %rdi
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: retq
%and = and i64 %b, 63
%shl = shl i64 %a, %and
%t0 = sub i64 0, %b
%and3 = and i64 %t0, 63
%shr = lshr i64 %a, %and3
%or = or i64 %shl, %shr
ret i64 %or
}
define i64 @rotate_right_64(i64 %a, i64 %b) {
; CHECK-LABEL: rotate_right_64:
; CHECK: # BB#0:
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: rorq %cl, %rdi
; CHECK-NEXT: movq %rdi, %rax
; CHECK-NEXT: retq
%and = and i64 %b, 63
%shl = lshr i64 %a, %and
%t0 = sub i64 0, %b
%and3 = and i64 %t0, 63
%shr = shl i64 %a, %and3
%or = or i64 %shl, %shr
ret i64 %or
}
; Also check mem operand.
define void @rotate_left_m32(i32 *%pa, i32 %b) {
; CHECK-LABEL: rotate_left_m32:
; CHECK: # BB#0:
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: roll %cl, (%rdi)
; CHECK-NEXT: retq
%a = load i32, i32* %pa, align 16
%and = and i32 %b, 31
%shl = shl i32 %a, %and
%t0 = sub i32 0, %b
%and3 = and i32 %t0, 31
%shr = lshr i32 %a, %and3
%or = or i32 %shl, %shr
store i32 %or, i32* %pa, align 32
ret void
}
define void @rotate_right_m32(i32 *%pa, i32 %b) {
; CHECK-LABEL: rotate_right_m32:
; CHECK: # BB#0:
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: rorl %cl, (%rdi)
; CHECK-NEXT: retq
%a = load i32, i32* %pa, align 16
%and = and i32 %b, 31
%shl = lshr i32 %a, %and
%t0 = sub i32 0, %b
%and3 = and i32 %t0, 31
%shr = shl i32 %a, %and3
%or = or i32 %shl, %shr
store i32 %or, i32* %pa, align 32
ret void
}
define void @rotate_left_m64(i64 *%pa, i64 %b) {
; CHECK-LABEL: rotate_left_m64:
; CHECK: # BB#0:
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: rolq %cl, (%rdi)
; CHECK-NEXT: retq
%a = load i64, i64* %pa, align 16
%and = and i64 %b, 63
%shl = shl i64 %a, %and
%t0 = sub i64 0, %b
%and3 = and i64 %t0, 63
%shr = lshr i64 %a, %and3
%or = or i64 %shl, %shr
store i64 %or, i64* %pa, align 64
ret void
}
define void @rotate_right_m64(i64 *%pa, i64 %b) {
; CHECK-LABEL: rotate_right_m64:
; CHECK: # BB#0:
; CHECK-NEXT: movl %esi, %ecx
; CHECK-NEXT: rorq %cl, (%rdi)
; CHECK-NEXT: retq
%a = load i64, i64* %pa, align 16
%and = and i64 %b, 63
%shl = lshr i64 %a, %and
%t0 = sub i64 0, %b
%and3 = and i64 %t0, 63
%shr = shl i64 %a, %and3
%or = or i64 %shl, %shr
store i64 %or, i64* %pa, align 64
ret void
}