mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-22 07:32:48 +00:00
7466678003
1. Inform users of ADDEs with two 0 operands that it never sets carry 2. Fold other ADDs or ADDCs into the ADDE if possible It would be neat if we could do the same thing for SETCC+ADD eventually, but we can't do that in target independent code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126557 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
639 B
LLVM
27 lines
639 B
LLVM
; RUN: llc -march=x86-64 < %s | FileCheck %s -check-prefix=CHECK-64
|
|
; RUN: llc -march=x86 < %s | FileCheck %s -check-prefix=CHECK-32
|
|
|
|
define void @a(i64* nocapture %s, i64* nocapture %t, i64 %a, i64 %b, i64 %c) nounwind {
|
|
entry:
|
|
%0 = zext i64 %a to i128
|
|
%1 = zext i64 %b to i128
|
|
%2 = add i128 %1, %0
|
|
%3 = zext i64 %c to i128
|
|
%4 = shl i128 %3, 64
|
|
%5 = add i128 %4, %2
|
|
%6 = lshr i128 %5, 64
|
|
%7 = trunc i128 %6 to i64
|
|
store i64 %7, i64* %s, align 8
|
|
%8 = trunc i128 %2 to i64
|
|
store i64 %8, i64* %t, align 8
|
|
ret void
|
|
|
|
; CHECK-32: addl
|
|
; CHECK-32: adcl
|
|
; CHECK-32: adcl $0
|
|
; CHECK-32: adcl $0
|
|
|
|
; CHECK-64: addq
|
|
; CHECK-64: adcq $0
|
|
}
|