aboutsummaryrefslogtreecommitdiff
path: root/test/CodeGen/ARM/smul.ll
blob: 686d791ce60dd251de24aafbdf1a37c59715fc08 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
; RUN: llc < %s -march=arm -mcpu=generic
; RUN: llc < %s -march=arm -mcpu=cortex-a8 | FileCheck %s

@x = weak global i16 0          ; <i16*> [#uses=1]
@y = weak global i16 0          ; <i16*> [#uses=0]

define i32 @f1(i32 %y) {
; CHECK: f1
; CHECK: smulbt
        %tmp = load i16* @x             ; <i16> [#uses=1]
        %tmp1 = add i16 %tmp, 2         ; <i16> [#uses=1]
        %tmp2 = sext i16 %tmp1 to i32           ; <i32> [#uses=1]
        %tmp3 = ashr i32 %y, 16         ; <i32> [#uses=1]
        %tmp4 = mul i32 %tmp2, %tmp3            ; <i32> [#uses=1]
        ret i32 %tmp4
}

define i32 @f2(i32 %x, i32 %y) {
; CHECK: f2
; CHECK: smultt
        %tmp1 = ashr i32 %x, 16         ; <i32> [#uses=1]
        %tmp3 = ashr i32 %y, 16         ; <i32> [#uses=1]
        %tmp4 = mul i32 %tmp3, %tmp1            ; <i32> [#uses=1]
        ret i32 %tmp4
}

define i32 @f3(i32 %a, i16 %x, i32 %y) {
; CHECK: f3
; CHECK: smlabt
        %tmp = sext i16 %x to i32               ; <i32> [#uses=1]
        %tmp2 = ashr i32 %y, 16         ; <i32> [#uses=1]
        %tmp3 = mul i32 %tmp2, %tmp             ; <i32> [#uses=1]
        %tmp5 = add i32 %tmp3, %a               ; <i32> [#uses=1]
        ret i32 %tmp5
}