File: neg-alloca.ll

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (19 lines) | stat: -rw-r--r-- 650 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
 
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
declare void @use(ptr)

define void @foo(i64 %X) {
; Currently we cannot handle expressions of the form Offset - X * Scale.
; CHECK-LABEL: @foo(
; CHECK-NEXT:    [[TMP1:%.*]] = shl i64 [[X:%.*]], 2
; CHECK-NEXT:    [[TMP2:%.*]] = sub i64 24, [[TMP1]]
; CHECK-NEXT:    [[TMP3:%.*]] = alloca i8, i64 [[TMP2]], align 4
; CHECK-NEXT:    call void @use(ptr nonnull [[TMP3]])
; CHECK-NEXT:    ret void
;
  %1 = mul nsw i64 %X, -4
  %2 = add nsw i64 %1, 24
  %3 = alloca i8, i64 %2, align 4
  call void @use(ptr %3)
  ret void
}