File: 2008-03-13-ReturnSlotBitcast.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 (19 lines) | stat: -rw-r--r-- 519 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; RUN: llvm-as < %s | opt -memcpyopt | llvm-dis | not grep {call.*memcpy.}
	%a = type { i32 }
	%b = type { float }

declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) nounwind 
declare void @g(%a*)

define float @f() {
entry:
	%a_var = alloca %a
	%b_var = alloca %b
	call void @g(%a *%a_var)
	%a_i8 = bitcast %a* %a_var to i8*
	%b_i8 = bitcast %b* %b_var to i8*
	call void @llvm.memcpy.i32(i8* %b_i8, i8* %a_i8, i32 4, i32 4)
	%tmp1 = getelementptr %b* %b_var, i32 0, i32 0
	%tmp2 = load float* %tmp1
	ret float %tmp2
}