File: PromoteMemToRegister.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 (18 lines) | stat: -rw-r--r-- 622 bytes parent folder | download 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
 
; Simple sanity check testcase.  Both alloca's should be eliminated.
; RUN: llvm-as < %s | opt -mem2reg | llvm-dis | not grep alloca

define double @testfunc(i32 %i, double %j) {
	%I = alloca i32		; <i32*> [#uses=4]
	%J = alloca double		; <double*> [#uses=2]
	store i32 %i, i32* %I
	store double %j, double* %J
	%t1 = load i32* %I		; <i32> [#uses=1]
	%t2 = add i32 %t1, 1		; <i32> [#uses=1]
	store i32 %t2, i32* %I
	%t3 = load i32* %I		; <i32> [#uses=1]
	%t4 = sitofp i32 %t3 to double		; <double> [#uses=1]
	%t5 = load double* %J		; <double> [#uses=1]
	%t6 = fmul double %t4, %t5		; <double> [#uses=1]
	ret double %t6
}