Mercurial > hg > CbC > CbC_llvm
view polly/test/CodeGen/synthesizable_phi_write_after_loop.ll @ 252:1f2b6ac9f198 llvm-original
LLVM16-1
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
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date | Fri, 18 Aug 2023 09:04:13 +0900 |
parents | c4bab56944e8 |
children |
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; RUN: opt %loadPolly -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 }