File: negative-stride-fptosi-user.ll

package info (click to toggle)
llvm-2.7 2.7-6
  • links: PTS
  • area: main
  • in suites: squeeze
  • size: 59,992 kB
  • ctags: 49,499
  • sloc: cpp: 373,792; ansic: 16,885; sh: 12,614; asm: 6,809; ada: 3,083; ml: 2,942; python: 2,671; perl: 2,404; makefile: 1,691; pascal: 1,235; exp: 399; objc: 291; lisp: 184; csh: 117; xml: 38; f90: 36
file content (25 lines) | stat: -rw-r--r-- 1,004 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
 
; RUN: llc < %s -march=x86-64 | grep cvtsi2sd

; LSR previously eliminated the sitofp by introducing an induction
; variable which stepped by a bogus ((double)UINT32_C(-1)). It's theoretically
; possible to eliminate the sitofp using a proper -1.0 step though; this
; test should be changed if that is done.

define void @foo(i32 %N) nounwind {
entry:
  %0 = icmp slt i32 %N, 0                         ; <i1> [#uses=1]
  br i1 %0, label %bb, label %return

bb:                                               ; preds = %bb, %entry
  %i.03 = phi i32 [ 0, %entry ], [ %2, %bb ]      ; <i32> [#uses=2]
  %1 = sitofp i32 %i.03 to double                  ; <double> [#uses=1]
  tail call void @bar(double %1) nounwind
  %2 = add nsw i32 %i.03, -1                       ; <i32> [#uses=2]
  %exitcond = icmp eq i32 %2, %N                  ; <i1> [#uses=1]
  br i1 %exitcond, label %return, label %bb

return:                                           ; preds = %bb, %entry
  ret void
}

declare void @bar(double)