File: 2007-01-19-TruncSext.ll

package info (click to toggle)
llvm-toolchain-9 1%3A9.0.1-16
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 882,436 kB
  • sloc: cpp: 4,167,636; ansic: 714,256; asm: 457,610; python: 155,927; objc: 65,094; sh: 42,856; lisp: 26,908; perl: 7,786; pascal: 7,722; makefile: 6,881; ml: 5,581; awk: 3,648; cs: 2,027; xml: 888; javascript: 381; ruby: 156
file content (30 lines) | stat: -rw-r--r-- 919 bytes parent folder | download | duplicates (14)
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
; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
; RUN: diff %t1.ll %t2.ll
; RUN: llvm-as < %s | lli --force-interpreter=true | FileCheck %s
; CHECK: -255

@ARRAY   = global [ 20 x i17 ] zeroinitializer
@FORMAT  = constant [ 4 x i8 ] c"%d\0A\00"

declare i32 @printf(i8* %format, ...)

define void @multiply(i32 %index, i32 %X, i32 %Y) {
  %Z = mul i32 %X, %Y
  %P = getelementptr [20 x i17], [20 x i17]* @ARRAY, i32 0, i32 %index
  %Result = trunc i32 %Z to i17
  store i17 %Result, i17* %P
  ret void
}

define i32 @main(i32 %argc, i8** %argv) {
  %i = bitcast i32 0 to i32
  call void @multiply(i32 %i, i32 -1, i32 255) 
  %P = getelementptr [20 x i17], [20 x i17]* @ARRAY, i32 0, i32 0
  %X = load i17, i17* %P
  %result = sext i17 %X to i32
  %fmt = getelementptr [4 x i8], [4 x i8]* @FORMAT, i32 0, i32 0
  call i32 (i8*,...) @printf(i8* %fmt, i32 %result)
  ret i32 0
}