File: 2011-11-30-MergeAlignment.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb12u1
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,634,792 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (24 lines) | stat: -rw-r--r-- 661 bytes parent folder | download | duplicates (12) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
 
; RUN: llc < %s | FileCheck %s
; <rdar://problem/10497732>

target datalayout = "e-p:32:32:32-i1:8:32-i8:8:32-i16:16:32-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:32:64-v128:32:128-a0:0:32-n32"
target triple = "thumbv7-apple-darwin10"

@x1 = internal global i32 1
@x2 = internal global i64 12

define i64 @f() {
  %ax = load i32, ptr @x1
  %a = zext i32 %ax to i64
  %b = load i64, ptr @x2
  %c = add i64 %a, %b
  ret i64 %c
}

; We can global-merge the i64 in theory, but the current code doesn't handle
; the alignment correctly; for the moment, just check that we don't do it.
; See also 

; CHECK-NOT: MergedGlobals
; CHECK: _x2
; CHECK-NOT: MergedGlobals