; ModuleID = 'parallel_loop.s' ; RUN: opt %loadPolly %defaultOpts -polly-cloog -polly-codegen -enable-polly-openmp -analyze < %s | FileCheck %s ; RUN: opt %loadPolly %defaultOpts -polly-import-jscop -polly-import-jscop-dir=`dirname %s` -polly-cloog -polly-codegen -enable-polly-openmp -analyze < %s | FileCheck -check-prefix=IMPORT %s ; RUN: opt %loadPolly %defaultOpts -polly-import-jscop -polly-import-jscop-dir=`dirname %s` -polly-cloog -polly-codegen -enable-polly-openmp -analyze < %s | FileCheck -check-prefix=IMPORT %s ; RUN: opt %loadPolly %defaultOpts -polly-import-jscop -polly-import-jscop-postfix=tiled -polly-import-jscop-dir=`dirname %s` -polly-cloog -polly-codegen -enable-polly-openmp -analyze -disable-polly-legality < %s | FileCheck -check-prefix=TILED %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" target triple = "x86_64-unknown-linux-gnu" @A = common global [1024 x [1024 x float]] zeroinitializer, align 16 @B = common global [1024 x [1024 x float]] zeroinitializer, align 16 @C = common global [1024 x [1024 x float]] zeroinitializer, align 16 @X = common global [1024 x float] zeroinitializer, align 16 define float @parallel_loop() nounwind { bb: br label %bb18 bb18: ; preds = %bb32, %bb %indvar9 = phi i64 [ %indvar.next10, %bb32 ], [ 0, %bb ] %exitcond15 = icmp ne i64 %indvar9, 1024 br i1 %exitcond15, label %bb19, label %bb33 bb19: ; preds = %bb18 br label %bb20 bb20: ; preds = %bb30, %bb19 %indvar6 = phi i64 [ %indvar.next7, %bb30 ], [ 0, %bb19 ] %scevgep14 = getelementptr [1024 x [1024 x float]]* @C, i64 0, i64 %indvar9, i64 %indvar6 %exitcond12 = icmp ne i64 %indvar6, 1024 br i1 %exitcond12, label %bb21, label %bb31 bb21: ; preds = %bb20 br label %bb22 bb22: ; preds = %bb28, %bb21 %indvar3 = phi i64 [ %indvar.next4, %bb28 ], [ 0, %bb21 ] %scevgep11 = getelementptr [1024 x [1024 x float]]* @A, i64 0, i64 %indvar9, i64 %indvar3 %scevgep8 = getelementptr [1024 x [1024 x float]]* @B, i64 0, i64 %indvar3, i64 %indvar6 %exitcond5 = icmp ne i64 %indvar3, 1024 br i1 %exitcond5, label %bb23, label %bb29 bb23: ; preds = %bb22 %tmp = load float* %scevgep11, align 4 %tmp24 = load float* %scevgep8, align 4 %tmp25 = fmul float %tmp, %tmp24 %tmp26 = load float* %scevgep14, align 4 %tmp27 = fadd float %tmp26, %tmp25 store float %tmp27, float* %scevgep14, align 4 br label %bb28 bb28: ; preds = %bb23 %indvar.next4 = add i64 %indvar3, 1 br label %bb22 bb29: ; preds = %bb22 br label %bb30 bb30: ; preds = %bb29 %indvar.next7 = add i64 %indvar6, 1 br label %bb20 bb31: ; preds = %bb20 br label %bb32 bb32: ; preds = %bb31 %indvar.next10 = add i64 %indvar9, 1 br label %bb18 bb33: ; preds = %bb18 br label %bb34 bb34: ; preds = %bb48, %bb33 %i.1 = phi i32 [ 0, %bb33 ], [ %tmp49, %bb48 ] %exitcond2 = icmp ne i32 %i.1, 1024 br i1 %exitcond2, label %bb35, label %bb50 bb35: ; preds = %bb34 br label %bb36 bb36: ; preds = %bb45, %bb35 %j.1 = phi i32 [ 0, %bb35 ], [ %tmp46, %bb45 ] %exitcond1 = icmp ne i32 %j.1, 1024 br i1 %exitcond1, label %bb37, label %bb47 bb37: ; preds = %bb36 br label %bb38 bb38: ; preds = %bb43, %bb37 %indvar = phi i64 [ %indvar.next, %bb43 ], [ 0, %bb37 ] %scevgep = getelementptr [1024 x float]* @X, i64 0, i64 %indvar %exitcond = icmp ne i64 %indvar, 1024 br i1 %exitcond, label %bb39, label %bb44 bb39: ; preds = %bb38 %tmp40 = load float* %scevgep, align 4 %tmp41 = load float* %scevgep, align 4 %tmp42 = fadd float %tmp41, %tmp40 store float %tmp42, float* %scevgep, align 4 br label %bb43 bb43: ; preds = %bb39 %indvar.next = add i64 %indvar, 1 br label %bb38 bb44: ; preds = %bb38 br label %bb45 bb45: ; preds = %bb44 %tmp46 = add nsw i32 %j.1, 1 br label %bb36 bb47: ; preds = %bb36 br label %bb48 bb48: ; preds = %bb47 %tmp49 = add nsw i32 %i.1, 1 br label %bb34 bb50: ; preds = %bb34 %tmp51 = load float* getelementptr inbounds ([1024 x [1024 x float]]* @C, i64 0, i64 42, i64 42), align 8 %tmp52 = load float* getelementptr inbounds ([1024 x float]* @X, i64 0, i64 42), align 8 %tmp53 = fadd float %tmp51, %tmp52 ret float %tmp53 } ; CHECK: for (c2=0;c2<=1023;c2++) { ; CHECK: for (c4=0;c4<=1023;c4++) { ; CHECK: for (c6=0;c6<=1023;c6++) { ; CHECK: Stmt_bb23(c2,c4,c6); ; CHECK: } ; CHECK: } ; CHECK: } ; CHECK: for (c2=0;c2<=1023;c2++) { ; CHECK: for (c4=0;c4<=1023;c4++) { ; CHECK: for (c6=0;c6<=1023;c6++) { ; CHECK: Stmt_bb39(c2,c4,c6); ; CHECK: } ; CHECK: } ; CHECK: } ; CHECK: Parallel loop with iterator 'c2' generated ; CHECK: Parallel loop with iterator 'c6' generated ; CHECK-NOT: Parallel loop ; IMPORT: for (c2=0;c2<=1023;c2++) { ; IMPORT: for (c4=0;c4<=1023;c4++) { ; IMPORT: for (c6=0;c6<=1023;c6++) { ; IMPORT: Stmt_bb23(c2,c4,c6); ; IMPORT: Stmt_bb39(c2,c4,c6); ; IMPORT: } ; IMPORT: } ; IMPORT: } ; IMPORT-NOT: Parallel loop ; TILED: for (c2=0;c2<=1023;c2+=4) { ; TILED: for (c4=0;c4<=1023;c4+=4) { ; TILED: for (c6=0;c6<=1023;c6+=4) { ; TILED: for (c8=c2;c8<=c2+3;c8++) { ; TILED: for (c9=c4;c9<=c4+3;c9++) { ; TILED: for (c10=c6;c10<=c6+3;c10++) { ; TILED: Stmt_bb23(c8,c9,c10); ; TILED: } ; TILED: } ; TILED: } ; TILED: } ; TILED: } ; TILED: } ; TILED: for (c2=0;c2<=1023;c2+=4) { ; TILED: for (c4=0;c4<=1023;c4+=4) { ; TILED: for (c6=0;c6<=1023;c6+=4) { ; TILED: for (c8=c2;c8<=c2+3;c8++) { ; TILED: for (c9=c4;c9<=c4+3;c9++) { ; TILED: for (c10=c6;c10<=c6+3;c10++) { ; TILED: Stmt_bb39(c8,c9,c10); ; TILED: } ; TILED: } ; TILED: } ; TILED: } ; TILED: } ; TILED: } ; I am not sure if we actually may have parallel loops here. The dependency ; analysis does not detect any. This may however be because we do not ; correctly update the imported schedule. Add a check that hopefully fails ; after this is corrected. Or someone proves there are no parallel loops and ; we can remove this comment. ; TILDED-NOT: Parallel loop