Files
clang-p2996/polly/test/CodeGen/synthesizable_phi_write_after_loop.ll
rahulana-quic e1f056f692 Reland "[polly] Port polly tests to use NPM" (#92918)
Even as the NPM has been in use by Polly for a while now, the majority
of the tests continue using the LPM passes. This patch ports the tests
to use the NPM passes (for example, by replacing a flag such as
-polly-detect with -passes=polly-detect following the NPM syntax for
specifying passes) with some exceptions for some missing features in the
new passes.

Relanding #90632.
2024-05-24 13:09:34 -07:00

40 lines
1.1 KiB
LLVM

; RUN: opt %loadNPMPolly -passes=polly-codegen -S < %s | FileCheck %s
;
; Check for the correct written value of a scalar phi write whose value is
; defined within the loop, but its effective value is its last definition when
; leaving the loop (in this test it is the value 2 for %i.inc). This can be
; either computed:
; - Using SCEVExpander:
; In this case the Loop passed to the expander must NOT be the loop
; - Overwriting the same alloca in each iteration s.t. the last value will
; retain in %i.inc.s2a
; The first is currently generated by Polly and tested here.
; CHECK: polly.stmt.next:
; CHECK-NEXT: store i32 2, ptr %phi.phiops
; CHECK-NEXT: br label %polly.stmt.join
define i32 @func() {
entry:
br label %start
start:
br i1 true, label %loop, label %join
loop:
%i = phi i32 [ 0, %start ], [ %i.inc, %loop ]
%i.inc = add nsw i32 %i, 1
%cond = icmp slt i32 %i.inc, 2
br i1 %cond, label %loop, label %next
next:
br label %join
join:
%phi = phi i32 [%i.inc, %next], [0, %start]
br label %return
return:
ret i32 %phi
}