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|
; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-linux-gnu | FileCheck %s
; Note that this should be refactored (for efficiency if nothing else)
; when the PCS is implemented so we don't have to worry about the
; loads and stores.
@var_i32 = global i32 42
@var_i64 = global i64 0
; Add pure 12-bit immediates:
define void @add_small() {
; CHECK-LABEL: add_small:
; CHECK: add {{w[0-9]+}}, {{w[0-9]+}}, #4095
%val32 = load i32* @var_i32
%newval32 = add i32 %val32, 4095
store i32 %newval32, i32* @var_i32
; CHECK: add {{x[0-9]+}}, {{x[0-9]+}}, #52
%val64 = load i64* @var_i64
%newval64 = add i64 %val64, 52
store i64 %newval64, i64* @var_i64
ret void
}
; Add 12-bit immediates, shifted left by 12 bits
define void @add_med() {
; CHECK-LABEL: add_med:
; CHECK: add {{w[0-9]+}}, {{w[0-9]+}}, {{#3567, lsl #12|#14610432}}
%val32 = load i32* @var_i32
%newval32 = add i32 %val32, 14610432 ; =0xdef000
store i32 %newval32, i32* @var_i32
; CHECK: add {{x[0-9]+}}, {{x[0-9]+}}, {{#4095, lsl #12|#16773120}}
%val64 = load i64* @var_i64
%newval64 = add i64 %val64, 16773120 ; =0xfff000
store i64 %newval64, i64* @var_i64
ret void
}
; Subtract 12-bit immediates
define void @sub_small() {
; CHECK-LABEL: sub_small:
; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, #4095
%val32 = load i32* @var_i32
%newval32 = sub i32 %val32, 4095
store i32 %newval32, i32* @var_i32
; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, #52
%val64 = load i64* @var_i64
%newval64 = sub i64 %val64, 52
store i64 %newval64, i64* @var_i64
ret void
}
; Subtract 12-bit immediates, shifted left by 12 bits
define void @sub_med() {
; CHECK-LABEL: sub_med:
; CHECK: sub {{w[0-9]+}}, {{w[0-9]+}}, {{#3567, lsl #12|#14610432}}
%val32 = load i32* @var_i32
%newval32 = sub i32 %val32, 14610432 ; =0xdef000
store i32 %newval32, i32* @var_i32
; CHECK: sub {{x[0-9]+}}, {{x[0-9]+}}, {{#4095, lsl #12|#16773120}}
%val64 = load i64* @var_i64
%newval64 = sub i64 %val64, 16773120 ; =0xfff000
store i64 %newval64, i64* @var_i64
ret void
}
define void @testing() {
; CHECK-LABEL: testing:
%val = load i32* @var_i32
; CHECK: cmp {{w[0-9]+}}, #4095
; CHECK: b.ne [[RET:.?LBB[0-9]+_[0-9]+]]
%cmp_pos_small = icmp ne i32 %val, 4095
br i1 %cmp_pos_small, label %ret, label %test2
test2:
; CHECK: cmp {{w[0-9]+}}, {{#3567, lsl #12|#14610432}}
; CHECK: b.lo [[RET]]
%newval2 = add i32 %val, 1
store i32 %newval2, i32* @var_i32
%cmp_pos_big = icmp ult i32 %val, 14610432
br i1 %cmp_pos_big, label %ret, label %test3
test3:
; CHECK: cmp {{w[0-9]+}}, #123
; CHECK: b.lt [[RET]]
%newval3 = add i32 %val, 2
store i32 %newval3, i32* @var_i32
%cmp_pos_slt = icmp slt i32 %val, 123
br i1 %cmp_pos_slt, label %ret, label %test4
test4:
; CHECK: cmp {{w[0-9]+}}, #321
; CHECK: b.gt [[RET]]
%newval4 = add i32 %val, 3
store i32 %newval4, i32* @var_i32
%cmp_pos_sgt = icmp sgt i32 %val, 321
br i1 %cmp_pos_sgt, label %ret, label %test5
test5:
; CHECK: cmn {{w[0-9]+}}, #444
; CHECK: b.gt [[RET]]
%newval5 = add i32 %val, 4
store i32 %newval5, i32* @var_i32
%cmp_neg_uge = icmp sgt i32 %val, -444
br i1 %cmp_neg_uge, label %ret, label %test6
test6:
%newval6 = add i32 %val, 5
store i32 %newval6, i32* @var_i32
ret void
ret:
ret void
}
; TODO: adds/subs
|
