1
0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-17 18:31:04 +00:00
llvm-6502/test/CodeGen/AArch64/cmp-const-max.ll
Oliver Stannard e13ea1ddda [AArch64] Fix miscompile of comparison with 0xffffffffffffffff
Some literals in the AArch64 backend had 15 'f's rather than 16, causing
comparisons with a constant 0xffffffffffffffff to be miscompiled.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@221157 91177308-0d34-0410-b5e6-96231b3b80d8
2014-11-03 15:28:40 +00:00

37 lines
813 B
LLVM

; RUN: llc -verify-machineinstrs -aarch64-atomic-cfg-tidy=0 < %s -mtriple=aarch64-none-eabihf -fast-isel=false | FileCheck %s
define i32 @ule_64_max(i64 %p) {
entry:
; CHECK-LABEL: ule_64_max:
; CHECK: cmn x0, #1
; CHECK: b.hi [[RET_ZERO:.LBB[0-9]+_[0-9]+]]
%cmp = icmp ule i64 %p, 18446744073709551615 ; 0xffffffffffffffff
br i1 %cmp, label %ret_one, label %ret_zero
ret_one:
ret i32 1
ret_zero:
; CHECK: [[RET_ZERO]]:
; CHECK-NEXT: mov w0, wzr
ret i32 0
}
define i32 @ugt_64_max(i64 %p) {
entry:
; CHECK-LABEL: ugt_64_max:
; CHECK: cmn x0, #1
; CHECK: b.ls [[RET_ZERO:.LBB[0-9]+_[0-9]+]]
%cmp = icmp ugt i64 %p, 18446744073709551615 ; 0xffffffffffffffff
br i1 %cmp, label %ret_one, label %ret_zero
ret_one:
ret i32 1
ret_zero:
; CHECK: [[RET_ZERO]]:
; CHECK-NEXT: mov w0, wzr
ret i32 0
}