llvm-project/polly/test/CodeGen/scev_looking_through_bitcas...

40 lines
1.1 KiB
LLVM

; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s
;
; Scalar write of bitcasted value. Instead of writing %b of type
; %structty, the SCEV expression looks through the bitcast such that
; SCEVExpander returns %add.ptr81.i of type i8* to be the new value
; of %b.
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
%structty = type { %structty*, %structty*, i32, [2 x i64] }
define void @bitmap_set_range() {
entry:
%a = ptrtoint i8* undef to i64
br label %cond.end32.i
cond.end32.i:
br i1 false, label %cond.true67.i, label %cond.end73.i
cond.true67.i:
br label %cond.end73.i
cond.end73.i:
%add.ptr81.i = getelementptr inbounds i8, i8* null, i64 %a
%b = bitcast i8* %add.ptr81.i to %structty*
br label %bitmap_element_allocate.exit
bitmap_element_allocate.exit:
%tobool43 = icmp eq %structty* %b, null
ret void
}
; CHECK: polly.stmt.cond.end73.i:
; CHECK-NEXT: %scevgep = getelementptr i8, i8* null, i64 %a
; CHECK-NEXT: %scevgep1 = bitcast i8* %scevgep to %structty*
; CHECK-NEXT: store %structty* %scevgep1, %structty** %b.s2a, align 8
; CHECK-NEXT: br label %polly.exiting