File: invalidate-scev.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (34 lines) | stat: -rw-r--r-- 1,186 bytes parent folder | download | duplicates (4) 
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
31
32
33
34
 
; RUN: opt -S -indvars -loop-unswitch < %s | FileCheck %s
; RUN: opt -S -indvars -loop-unswitch -enable-mssa-loop-dependency=true -verify-memoryssa < %s | FileCheck %s

target triple = "x86_64-unknown-linux-gnu"

define void @test_01() {

; Make sure we don't fail by SCEV's assertion due to incorrect invalidation.
; CHECK-LABEL: @test_01

entry:
  br label %loop

loop:                           ; preds = %backedge, %entry
  %p_50.addr.0 = phi i16 [ undef, %entry ], [ %add2699, %backedge ]
  %idxprom2690 = sext i16 %p_50.addr.0 to i32
  %arrayidx2691 = getelementptr inbounds [5 x i32], [5 x i32]* undef, i32 0, i32 %idxprom2690
  %0 = load i32, i32* %arrayidx2691, align 1
  %tobool2692 = icmp ne i32 %0, 0
  br label %inner_loop

inner_loop:                                     ; preds = %inner_backedge, %loop
  br i1 %tobool2692, label %backedge, label %inner_backedge

inner_backedge:                                       ; preds = %inner_loop
  br label %inner_loop

backedge:                                      ; preds = %inner_loop
  %add2699 = add nsw i16 %p_50.addr.0, 1
  br i1 false, label %loop, label %exit

exit:               ; preds = %backedge
  unreachable
}