File: thumb2-smul.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.8-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,696 kB
  • sloc: cpp: 7,438,781; ansic: 1,393,871; asm: 1,012,926; python: 241,771; f90: 86,635; objc: 75,411; lisp: 42,144; pascal: 17,286; sh: 8,596; ml: 5,082; perl: 4,730; makefile: 3,591; awk: 3,523; javascript: 2,251; xml: 892; fortran: 672
file content (24 lines) | stat: -rw-r--r-- 872 bytes parent folder | download | duplicates (17) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; RUN: llc -mtriple=thumb-eabi -mcpu=arm1156t2-s -mattr=+thumb2,+dsp %s -o - |  FileCheck %s

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

define i32 @f1(i32 %y) {
; CHECK: f1
; CHECK: smulbt r0, r1, r0
        %tmp = load i16, ptr @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 r0, r1, r0
        %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
}