File: 2011-07-13-BadFrameIndexDisplacement.ll

package info (click to toggle)
llvm-toolchain-20 1%3A20.1.6-1~exp1
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,111,304 kB
  • sloc: cpp: 7,438,677; ansic: 1,393,822; asm: 1,012,926; python: 241,650; f90: 86,635; objc: 75,479; 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 (20 lines) | stat: -rw-r--r-- 653 bytes parent folder | download | duplicates (15) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
 
; RUN: llc -mtriple=x86_64-- < %s -frame-pointer=all | FileCheck %s

; This test is checking that we don't crash and we don't incorrectly fold
; a large displacement and a frame index into a single lea.
; <rdar://problem/9763308>

declare void @bar(ptr)
define i32 @f(i64 %a, i64 %b) nounwind readnone {
entry:
  %stack_main = alloca [39 x i8]
  call void @bar(ptr %stack_main)
  %tmp6 = add i64 %a, -2147483647
  %.sum = add i64 %tmp6, %b
  %tmp8 = getelementptr inbounds [39 x i8], ptr %stack_main, i64 0, i64 %.sum
  %tmp9 = load i8, ptr %tmp8, align 1
  %tmp10 = sext i8 %tmp9 to i32
  ret i32 %tmp10
}
; CHECK-LABEL: f:
; CHECK: movsbl	-2147483647