File: lvi-for-ashr.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.8-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,388 kB
  • sloc: cpp: 7,438,767; ansic: 1,393,871; asm: 1,012,926; python: 241,728; f90: 86,635; objc: 75,411; lisp: 42,144; pascal: 17,286; sh: 10,027; ml: 5,082; perl: 4,730; awk: 3,523; makefile: 3,349; javascript: 2,251; xml: 892; fortran: 672
file content (27 lines) | stat: -rw-r--r-- 666 bytes parent folder | download | duplicates (21) 
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
 
; RUN: opt -passes=correlated-propagation -S %s | FileCheck %s
; CHECK-LABEL: @test-ashr
; CHECK: bb_then
; CHECK:  %. = select i1 true, i32 3, i32 2
define i32 @test-ashr(i32 %c) {
chk65:
  %cmp = icmp sgt i32 %c, 65
  br i1 %cmp, label %return, label %chk0

chk0:
  %cmp1 = icmp slt i32 %c, 0
  br i1 %cmp, label %return, label %bb_if

bb_if:
  %ashr.val = ashr exact i32 %c, 2
  %cmp2 = icmp sgt i32 %ashr.val, 15
  br i1 %cmp2, label %bb_then, label %return

bb_then:
  %cmp3 = icmp eq i32 %ashr.val, 16
  %. = select i1 %cmp3, i32 3, i32 2
  br label %return

return:
  %retval = phi i32 [0, %chk65], [1, %chk0], [%., %bb_then], [4, %bb_if]
  ret i32 %retval
}