fastisel-gep-promote-before-add.ll
532 Bytes
; fastisel should not fold add with non-pointer bitwidth
; sext(a) + sext(b) != sext(a + b)
; RUN: llc -mtriple=armv7-apple-ios %s -O0 -o - | FileCheck %s
define zeroext i8 @gep_promotion(i8* %ptr) nounwind uwtable ssp {
entry:
%ptr.addr = alloca i8*, align 8
%add = add i8 64, 64 ; 0x40 + 0x40
%0 = load i8*, i8** %ptr.addr, align 8
; CHECK-LABEL: _gep_promotion:
; CHECK: ldrb {{r[0-9]+}}, {{\[r[0-9]+\]}}
%arrayidx = getelementptr inbounds i8, i8* %0, i8 %add
%1 = load i8, i8* %arrayidx, align 1
ret i8 %1
}