File: cast-and-cast.ll

package info (click to toggle)
llvm 2.6-9.1
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 57,604 kB
  • ctags: 44,336
  • sloc: cpp: 344,766; sh: 12,407; ansic: 10,617; ada: 3,070; ml: 2,505; perl: 2,496; makefile: 1,426; pascal: 1,163; exp: 389; asm: 307; python: 298; objc: 260; lisp: 182; csh: 117; xml: 38; f90: 36; tcl: 20
file content (17 lines) | stat: -rw-r--r-- 572 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | \
; RUN:   not grep bitcast

define i1 @test1(i32 %val) {
        %t1 = bitcast i32 %val to i32           ; <i32> [#uses=1]
        %t2 = and i32 %t1, 1            ; <i32> [#uses=1]
        %t3 = trunc i32 %t2 to i1               ; <i1> [#uses=1]
        ret i1 %t3
}

define i16 @test1.upgrd.1(i32 %val) {
        %t1 = bitcast i32 %val to i32           ; <i32> [#uses=1]
        %t2 = and i32 %t1, 1            ; <i32> [#uses=1]
        %t3 = trunc i32 %t2 to i16              ; <i16> [#uses=1]
        ret i16 %t3
}