llvm-project/llvm/test/CodeGen/PowerPC/fastisel-gep-promote-before-add.ll
Kai Nacke 427fb35192 [PPC] Opaque pointer migration, part 1.
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, amyk, nikic, PowerPC

Differential Revision: https://reviews.llvm.org/D135470
2022-10-11 17:24:06 +00:00

18 lines
545 B
LLVM

; fastisel should not fold add with non-pointer bitwidth
; sext(a) + sext(b) != sext(a + b)
; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-freebsd10.0 %s -O0 -o - | FileCheck %s
define zeroext i8 @gep_promotion(ptr %ptr) nounwind {
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: lbz {{[0-9]+}}, 0({{.*}})
%arrayidx = getelementptr inbounds i8, ptr %0, i8 %add
%1 = load i8, ptr %arrayidx, align 1
ret i8 %1
}