test/CodeGen/Thumb2/thumb2-mulhi.ll


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

; RUN: llc < %s -march=thumb -mcpu=arm1156t2-s -mattr=+thumb2,+t2dsp | FileCheck %s

define i32 @smulhi(i32 %x, i32 %y) {
; CHECK: smulhi
; CHECK: smmul r0, r1, r0
        %tmp = sext i32 %x to i64               ; <i64> [#uses=1]
        %tmp1 = sext i32 %y to i64              ; <i64> [#uses=1]
        %tmp2 = mul i64 %tmp1, %tmp             ; <i64> [#uses=1]
        %tmp3 = lshr i64 %tmp2, 32              ; <i64> [#uses=1]
        %tmp3.upgrd.1 = trunc i64 %tmp3 to i32          ; <i32> [#uses=1]
        ret i32 %tmp3.upgrd.1
}

define i32 @umulhi(i32 %x, i32 %y) {
; CHECK: umulhi
; CHECK: umull r1, r0, r1, r0
        %tmp = zext i32 %x to i64               ; <i64> [#uses=1]
        %tmp1 = zext i32 %y to i64              ; <i64> [#uses=1]
        %tmp2 = mul i64 %tmp1, %tmp             ; <i64> [#uses=1]
        %tmp3 = lshr i64 %tmp2, 32              ; <i64> [#uses=1]
        %tmp3.upgrd.2 = trunc i64 %tmp3 to i32          ; <i32> [#uses=1]
        ret i32 %tmp3.upgrd.2
}