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llvm-project/polly/test/ScopInfo/phi_loop_carried_float.ll

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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 23:36:44 +08:00
; RUN: opt %loadPolly -polly-scops -analyze < %s | FileCheck %s
Model PHI nodes without demoting them This allows us to model PHI nodes in the polyhedral description without demoting them. The modeling however will result in the same accesses as the demotion would have introduced. Differential Revision: http://reviews.llvm.org/D7415 llvm-svn: 228433
2015-02-07 04:13:15 +08:00
;
; float f(float *A, int N) {
; float tmp = 0;
; for (int i = 0; i < N; i++)
; tmp += A[i];
; }
;
; CHECK: Statements {
Tighten the PHI modeling test cases While looking through the test cases I realized we did not have a CHECK line for a duplicate memory access which we may want to eliminate later. To ensure we do not have (or later introduce) unnecessary memory accesses, we now tighten the test cases to look for such a pattern (and add the CHECK: line that shows the redundant memory access). llvm-svn: 238227
2015-05-27 02:05:45 +08:00
; CHECK-LABEL: Stmt_bb1
; CHECK-NOT: Access
Model PHI nodes without demoting them This allows us to model PHI nodes in the polyhedral description without demoting them. The modeling however will result in the same accesses as the demotion would have introduced. Differential Revision: http://reviews.llvm.org/D7415 llvm-svn: 228433
2015-02-07 04:13:15 +08:00
; CHECK: ReadAccess := [Reduction Type: NONE]
Keep track of ScopArrayInfo objects that model PHI node storage Summary: When translating PHI nodes into memory dependences during code generation we require two kinds of memory. 'Normal memory' as for all scalar dependences and 'PHI node memory' to store the incoming values of the PHI node. With this patch we now mark and track these two kinds of memories, which we previously incorrectly marked as a single memory object. Being aware of PHI node storage makes code generation easier, as we do not need to guess what kind of storage a scalar reference requires. This simplifies the code nicely. Reviewers: jdoerfert Subscribers: pollydev, llvm-commits Differential Revision: http://reviews.llvm.org/D11554 llvm-svn: 243420
2015-07-28 22:53:44 +08:00
; CHECK: [N] -> { Stmt_bb1[i0] -> MemRef_tmp_0__phi[] };
Tighten the PHI modeling test cases While looking through the test cases I realized we did not have a CHECK line for a duplicate memory access which we may want to eliminate later. To ensure we do not have (or later introduce) unnecessary memory accesses, we now tighten the test cases to look for such a pattern (and add the CHECK: line that shows the redundant memory access). llvm-svn: 238227
2015-05-27 02:05:45 +08:00
; CHECK-NOT: Access
Model PHI nodes without demoting them This allows us to model PHI nodes in the polyhedral description without demoting them. The modeling however will result in the same accesses as the demotion would have introduced. Differential Revision: http://reviews.llvm.org/D7415 llvm-svn: 228433
2015-02-07 04:13:15 +08:00
; CHECK: MustWriteAccess := [Reduction Type: NONE]
; CHECK: [N] -> { Stmt_bb1[i0] -> MemRef_tmp_0[] };
Tighten the PHI modeling test cases While looking through the test cases I realized we did not have a CHECK line for a duplicate memory access which we may want to eliminate later. To ensure we do not have (or later introduce) unnecessary memory accesses, we now tighten the test cases to look for such a pattern (and add the CHECK: line that shows the redundant memory access). llvm-svn: 238227
2015-05-27 02:05:45 +08:00
; CHECK-NOT: Access
; CHECK-LABEL: Stmt_bb4
; CHECK-NOT: Access
Model PHI nodes without demoting them This allows us to model PHI nodes in the polyhedral description without demoting them. The modeling however will result in the same accesses as the demotion would have introduced. Differential Revision: http://reviews.llvm.org/D7415 llvm-svn: 228433
2015-02-07 04:13:15 +08:00
; CHECK: MustWriteAccess := [Reduction Type: NONE]
Keep track of ScopArrayInfo objects that model PHI node storage Summary: When translating PHI nodes into memory dependences during code generation we require two kinds of memory. 'Normal memory' as for all scalar dependences and 'PHI node memory' to store the incoming values of the PHI node. With this patch we now mark and track these two kinds of memories, which we previously incorrectly marked as a single memory object. Being aware of PHI node storage makes code generation easier, as we do not need to guess what kind of storage a scalar reference requires. This simplifies the code nicely. Reviewers: jdoerfert Subscribers: pollydev, llvm-commits Differential Revision: http://reviews.llvm.org/D11554 llvm-svn: 243420
2015-07-28 22:53:44 +08:00
; CHECK: [N] -> { Stmt_bb4[i0] -> MemRef_tmp_0__phi[] };
Tighten the PHI modeling test cases While looking through the test cases I realized we did not have a CHECK line for a duplicate memory access which we may want to eliminate later. To ensure we do not have (or later introduce) unnecessary memory accesses, we now tighten the test cases to look for such a pattern (and add the CHECK: line that shows the redundant memory access). llvm-svn: 238227
2015-05-27 02:05:45 +08:00
; CHECK-NOT: Access
Model PHI nodes without demoting them This allows us to model PHI nodes in the polyhedral description without demoting them. The modeling however will result in the same accesses as the demotion would have introduced. Differential Revision: http://reviews.llvm.org/D7415 llvm-svn: 228433
2015-02-07 04:13:15 +08:00
; CHECK: ReadAccess := [Reduction Type: NONE]
; CHECK: [N] -> { Stmt_bb4[i0] -> MemRef_tmp_0[] };
Tighten the PHI modeling test cases While looking through the test cases I realized we did not have a CHECK line for a duplicate memory access which we may want to eliminate later. To ensure we do not have (or later introduce) unnecessary memory accesses, we now tighten the test cases to look for such a pattern (and add the CHECK: line that shows the redundant memory access). llvm-svn: 238227
2015-05-27 02:05:45 +08:00
; CHECK-NOT: Access
Model PHI nodes without demoting them This allows us to model PHI nodes in the polyhedral description without demoting them. The modeling however will result in the same accesses as the demotion would have introduced. Differential Revision: http://reviews.llvm.org/D7415 llvm-svn: 228433
2015-02-07 04:13:15 +08:00
; CHECK: ReadAccess := [Reduction Type: NONE]
; CHECK: [N] -> { Stmt_bb4[i0] -> MemRef_A[i0] };
Tighten the PHI modeling test cases While looking through the test cases I realized we did not have a CHECK line for a duplicate memory access which we may want to eliminate later. To ensure we do not have (or later introduce) unnecessary memory accesses, we now tighten the test cases to look for such a pattern (and add the CHECK: line that shows the redundant memory access). llvm-svn: 238227
2015-05-27 02:05:45 +08:00
; CHECK-NOT: Access
Model PHI nodes without demoting them This allows us to model PHI nodes in the polyhedral description without demoting them. The modeling however will result in the same accesses as the demotion would have introduced. Differential Revision: http://reviews.llvm.org/D7415 llvm-svn: 228433
2015-02-07 04:13:15 +08:00
; CHECK: }
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
define void @f(float* %A, i32 %N) {
bb:
%tmp = sext i32 %N to i64
br label %bb1
bb1: ; preds = %bb4, %bb
%indvars.iv = phi i64 [ %indvars.iv.next, %bb4 ], [ 0, %bb ]
%tmp.0 = phi float [ 0.000000e+00, %bb ], [ %tmp7, %bb4 ]
%tmp2 = icmp slt i64 %indvars.iv, %tmp
br i1 %tmp2, label %bb3, label %bb8
bb3: ; preds = %bb1
br label %bb4
bb4: ; preds = %bb3
Update Polly tests to handle explicitly typed gep changes in LLVM llvm-svn: 230784
2015-02-28 03:20:19 +08:00
%tmp5 = getelementptr inbounds float, float* %A, i64 %indvars.iv
Update Polly tests to handle explicitly typed load changes in LLVM. llvm-svn: 230796
2015-02-28 05:22:50 +08:00
%tmp6 = load float, float* %tmp5, align 4
Model PHI nodes without demoting them This allows us to model PHI nodes in the polyhedral description without demoting them. The modeling however will result in the same accesses as the demotion would have introduced. Differential Revision: http://reviews.llvm.org/D7415 llvm-svn: 228433
2015-02-07 04:13:15 +08:00
%tmp7 = fadd float %tmp.0, %tmp6
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
br label %bb1
bb8: ; preds = %bb1
br label %exit
exit:
ret void
}