dead_iteration_elimination.ll
2.58 KB
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; RUN: opt -S %loadPolly -basicaa -polly-dependences-analysis-type=value-based -polly-dce -polly-dce-precise-steps=2 -polly-ast -analyze < %s | FileCheck %s
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"
;
; for(i = 0; i < 200; i++ )
; A[i] = 2;
;
; for (i = 0; i < 50; i++ )
; A[i] = 5;
;
; for (i = 0; i < 70; i++ )
; A[i] = A[i] + 5;
;
; for (i = 100; i < 110; i++ )
; A[i] = i;
;
define void @main() nounwind uwtable {
entry:
%A = alloca [200 x i32], align 16
br label %for.body.1
for.body.1:
%indvar.1 = phi i64 [ 0, %entry ], [ %indvar.next.1, %for.body.1 ]
%arrayidx.1 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.1
store i32 2, i32* %arrayidx.1, align 4
%indvar.next.1 = add i64 %indvar.1, 1
%exitcond.1 = icmp ne i64 %indvar.next.1, 200
br i1 %exitcond.1, label %for.body.1, label %exit.1
exit.1:
br label %for.body.2
for.body.2:
%indvar.2 = phi i64 [ 0, %exit.1 ], [ %indvar.next.2, %for.body.2 ]
%arrayidx.2 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.2
store i32 5, i32* %arrayidx.2, align 4
%indvar.next.2 = add i64 %indvar.2, 1
%exitcond.2 = icmp ne i64 %indvar.next.2, 50
br i1 %exitcond.2, label %for.body.2, label %exit.2
exit.2:
br label %for.body.3
for.body.3:
%indvar.3 = phi i64 [ 0, %exit.2 ], [ %indvar.next.3, %for.body.3 ]
%arrayidx.3 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.3
%val = load i32, i32* %arrayidx.3, align 4
%add = add nsw i32 %val, 5
store i32 %add, i32* %arrayidx.3, align 4
%indvar.next.3 = add i64 %indvar.3, 1
%exitcond.3 = icmp ne i64 %indvar.next.3, 70
br i1 %exitcond.3, label %for.body.3 , label %exit.3
exit.3:
br label %for.body.4
for.body.4:
%indvar.4 = phi i64 [ 0, %exit.3 ], [ %indvar.next.4, %for.body.4 ]
%indvar.plus = add i64 %indvar.4, 100
%trunc = trunc i64 %indvar.plus to i32
%arrayidx.4 = getelementptr [200 x i32], [200 x i32]* %A, i64 0, i64 %indvar.plus
store i32 %trunc, i32* %arrayidx.4, align 4
%indvar.next.4 = add i64 %indvar.4, 1
%exitcond.4 = icmp ne i64 %indvar.next.4, 10
br i1 %exitcond.4, label %for.body.4, label %exit.4
exit.4:
ret void
}
; CHECK: for (int c0 = 50; c0 <= 99; c0 += 1)
; CHECK: Stmt_for_body_1(c0);
; CHECK: for (int c0 = 110; c0 <= 199; c0 += 1)
; CHECK: Stmt_for_body_1(c0);
; CHECK: for (int c0 = 0; c0 <= 49; c0 += 1)
; CHECK: Stmt_for_body_2(c0);
; CHECK: for (int c0 = 0; c0 <= 69; c0 += 1)
; CHECK: Stmt_for_body_3(c0);
; CHECK: for (int c0 = 0; c0 <= 9; c0 += 1)