Files
clang-p2996/polly/test/Isl/CodeGen/entry_with_trivial_phi.ll
Tobias Grosser f4ee371e60 tests: Drop -polly-detect-unprofitable and -polly-no-early-exit
These flags are now always passed to all tests and need to be disabled if
not needed. Disabling these flags, rather than passing them to almost all
tests, significantly simplfies our RUN: lines.

llvm-svn: 249422
2015-10-06 15:36:44 +00:00

42 lines
1.4 KiB
LLVM

; RUN: opt %loadPolly -polly-codegen -S < %s
;
; The entry of this scop's simple region (entry.split => for.end) has an trivial
; PHI node. LCSSA may create such PHI nodes. This is a breakdown of this case in
; the function 'Laguerre_With_Deflation' of oggenc from LLVM's test-suite.
;
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @test(i64 %n, float* noalias nonnull %A, float %a) {
entry:
br label %entry.split
; CHECK-LABEL: %polly.split_new_and_old
; CHECK-NEXT: store float %a, float* %b.phiops
; CHECK-LABEL: polly.stmt.entry.split
; CHECK-NEXT: %b.phiops.reload = load float, float* %b.phiops
entry.split:
%b = phi float [ %a, %entry ]
store float %b, float* %A, align 4
%cmp2 = icmp slt i64 %n, 5
br i1 %cmp2, label %for.cond, label %for.end
for.cond: ; preds = %for.inc, %entry
%i.0 = phi i64 [ 0, %entry.split ], [ %add, %for.inc ]
%cmp = icmp slt i64 %i.0, %n
br i1 %cmp, label %for.body, label %for.end
for.body: ; preds = %for.cond
%arrayidx = getelementptr inbounds float, float* %A, i64 %i.0
store float %a, float* %arrayidx, align 4
br label %for.inc
for.inc: ; preds = %for.body
%add = add nuw nsw i64 %i.0, 1
br label %for.cond
for.end: ; preds = %for.cond
ret void
}