File: hoist_instr.ll

package info (click to toggle)
swiftlang 6.0.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 2,519,992 kB
  • sloc: cpp: 9,107,863; ansic: 2,040,022; asm: 1,135,751; python: 296,500; objc: 82,456; f90: 60,502; lisp: 34,951; pascal: 19,946; sh: 18,133; perl: 7,482; ml: 4,937; javascript: 4,117; makefile: 3,840; awk: 3,535; xml: 914; fortran: 619; cs: 573; ruby: 573
file content (18 lines) | stat: -rw-r--r-- 505 bytes parent folder | download | duplicates (15)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
; RUN: opt < %s -passes=instcombine -S | FileCheck %s

;; This tests that the div is hoisted into the then block.
define i32 @foo(i1 %C, i32 %A, i32 %B) {
entry:
        br i1 %C, label %then, label %endif

then:           ; preds = %entry
; CHECK: then:
; CHECK-NEXT: sdiv i32
        br label %endif

endif:          ; preds = %then, %entry
        %X = phi i32 [ %A, %then ], [ 15, %entry ]              ; <i32> [#uses=1]
        %Y = sdiv i32 %X, 42            ; <i32> [#uses=1]
        ret i32 %Y
}