llvm-project/llvm/test/CodeGen/PowerPC/splitstore-check-volatile.ll
Kai Nacke 5403c59c60 [PPC] Opaque pointer migration, part 2.
The LIT test cases were migrated with the script provided by
Nikita Popov. Due to the size of the change it is split into
several parts.

Reviewed By: nemanja, nikic

Differential Revision: https://reviews.llvm.org/D135474
2022-10-11 17:24:06 +00:00

18 lines
495 B
LLVM

; Test that CodeGenPrepare respect the volatile flag when splitting a store.
;
; RUN: opt -S -mtriple=powerpc64le -codegenprepare -force-split-store < %s | FileCheck %s
define void @fun(ptr %Src, ptr %Dst) {
; CHECK: store volatile i16 %8, ptr %Dst
%1 = load i16, ptr %Src
%2 = trunc i16 %1 to i8
%3 = lshr i16 %1, 8
%4 = trunc i16 %3 to i8
%5 = zext i8 %2 to i16
%6 = zext i8 %4 to i16
%7 = shl nuw i16 %6, 8
%8 = or i16 %7, %5
store volatile i16 %8, ptr %Dst
ret void
}