Files
clang-p2996/polly/test/Isl/CodeGen/single_do_loop_one_iteration.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

70 lines
2.1 KiB
LLVM

; RUN: opt %loadPolly -polly-ast -S -analyze < %s | FileCheck %s
; XFAIL: *
;#define N 20
;#include "limits.h"
;
;int main () {
; int i;
; int A[N];
;
; A[0] = 1;
;
; __sync_synchronize();
;
; i = 0;
;
; do {
; A[0] = 0;
; ++i;
; } while (i < 1);
;
; __sync_synchronize();
;
; if (A[0] == 0)
; return 0;
; else
; return 1;
;}
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"
define i32 @main() nounwind {
entry:
%A = alloca [20 x i32], align 4 ; <[20 x i32]*> [#uses=3]
%arraydecay = getelementptr inbounds [20 x i32], [20 x i32]* %A, i32 0, i32 0 ; <i32*> [#uses=1]
%arrayidx = getelementptr inbounds i32, i32* %arraydecay, i64 0 ; <i32*> [#uses=1]
store i32 1, i32* %arrayidx
fence seq_cst
br label %do.body
do.body: ; preds = %do.cond, %entry
%arraydecay1 = getelementptr inbounds [20 x i32], [20 x i32]* %A, i32 0, i32 0 ; <i32*> [#uses=1]
%arrayidx2 = getelementptr inbounds i32, i32* %arraydecay1, i64 0 ; <i32*> [#uses=1]
store i32 0, i32* %arrayidx2
br label %do.cond
do.cond: ; preds = %do.body
br i1 false, label %do.body, label %do.end
do.end: ; preds = %do.cond
fence seq_cst
%arraydecay4 = getelementptr inbounds [20 x i32], [20 x i32]* %A, i32 0, i32 0 ; <i32*> [#uses=1]
%arrayidx5 = getelementptr inbounds i32, i32* %arraydecay4, i64 0 ; <i32*> [#uses=1]
%tmp6 = load i32, i32* %arrayidx5 ; <i32> [#uses=1]
%cmp7 = icmp eq i32 %tmp6, 0 ; <i1> [#uses=1]
br i1 %cmp7, label %if.then, label %if.else
if.then: ; preds = %do.end
br label %return
if.else: ; preds = %do.end
br label %return
return: ; preds = %if.else, %if.then
%retval.0 = phi i32 [ 0, %if.then ], [ 1, %if.else ] ; <i32> [#uses=1]
ret i32 %retval.0
}
; CHECK: S0(0)