File: arm64-fastisel-gep-promote-before-add.ll

package info (click to toggle)
llvm-toolchain-21 1%3A21.1.6-3
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 2,245,028 kB
  • sloc: cpp: 7,619,726; ansic: 1,434,018; asm: 1,058,748; python: 252,740; f90: 94,671; objc: 70,685; lisp: 42,813; pascal: 18,401; sh: 8,601; ml: 5,111; perl: 4,720; makefile: 3,675; awk: 3,523; javascript: 2,409; xml: 892; fortran: 770
file content (18 lines) | stat: -rw-r--r-- 553 bytes parent folder | download | duplicates (17)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
; fastisel should not fold add with non-pointer bitwidth
; sext(a) + sext(b) != sext(a + b)
; RUN: llc -fast-isel -mtriple=arm64-apple-darwin %s -O0 -o - | FileCheck %s

define zeroext i8 @gep_promotion(ptr %ptr) nounwind uwtable ssp {
entry:
  %ptr.addr = alloca ptr, align 8
  %add = add i8 64, 64 ; 0x40 + 0x40
  %0 = load ptr, ptr %ptr.addr, align 8

  ; CHECK-LABEL: _gep_promotion:
  ; CHECK: ldrb {{[a-z][0-9]+}}, {{\[[a-z][0-9]+\]}}
  %arrayidx = getelementptr inbounds i8, ptr %0, i8 %add

  %1 = load i8, ptr %arrayidx, align 1
  ret i8 %1
}