infeasible-rtc.ll
1.72 KB
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; RUN: opt %loadPolly -polly-detect -analyze < %s \
; RUN: | FileCheck %s -check-prefix=DETECT
; RUN: opt %loadPolly -polly-scops -analyze < %s \
; RUN: | FileCheck %s -check-prefix=SCOPS
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
; DETECT: Valid Region for Scop: test1.header => test1.exit
; SCOPS-NOT: Region: %test1.header---%test1.exit
; Verify that we detect this scop, but that, due to an infeasible run-time
; check, we refuse to model it.
define void @test(i64* %a) nounwind uwtable {
preheader:
br label %test1.header
test1.header:
%i = phi i56 [ 0, %preheader ], [ %i.1, %test1.header ]
%tmp = zext i56 %i to i64
%A.addr = getelementptr i64, i64* %a, i64 %tmp
%A.load = load i64, i64* %A.addr, align 4
%A.inc = zext i56 %i to i64
%A.val = add nsw i64 %A.load, %A.inc
store i64 %A.val, i64* %A.addr, align 4
%i.1 = add i56 %i, 1
%exitcond = icmp eq i56 %i.1, 0
br i1 %exitcond, label %test1.exit, label %test1.header
test1.exit:
ret void
}
; Old version of the previous test; make sure we compute the trip count
; correctly.
; SCOPS: { Stmt_header[i0] : 0 <= i0 <= 127 };
define void @test2([128 x i32]* %a) nounwind uwtable {
preheader:
br label %header
header:
%i = phi i7 [ 0, %preheader ], [ %i.1, %header ]
%tmp = zext i7 %i to i64
%A.addr = getelementptr [128 x i32], [128 x i32]* %a, i64 0, i64 %tmp
%A.load = load i32, i32* %A.addr, align 4
%A.inc = zext i7 %i to i32
%A.val = add nsw i32 %A.load, %A.inc
store i32 %A.val, i32* %A.addr, align 4
%i.1 = add i7 %i, 1
%exitcond = icmp eq i7 %i.1, 0
br i1 %exitcond, label %exit, label %header
exit:
ret void
}