llvm-project/llvm/test/CodeGen/PowerPC/selectiondag-sextload.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

27 lines
576 B
LLVM

; RUN: llc --mtriple=powerpc64le-linux-gnu < %s | FileCheck %s
; It tests in function DAGCombiner::visitSIGN_EXTEND_INREG
; signext will not be combined with extload, and causes extra zext.
declare void @g(i32 signext)
define void @foo(ptr %p) {
entry:
br label %while.body
while.body:
%0 = load i8, ptr %p, align 1
%conv = zext i8 %0 to i32
%cmp = icmp sgt i8 %0, 0
br i1 %cmp, label %if.then, label %while.body
; CHECK: lbz
; CHECK: extsb.
; CHECK-NOT: rlwinm
; CHECK: ble
if.then:
tail call void @g(i32 signext %conv)
br label %while.body
}