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-rw-r--r--llvm/test/Transforms/LoopUnroll/runtime-multiexit-heuristic.ll121
1 files changed, 58 insertions, 63 deletions
diff --git a/llvm/test/Transforms/LoopUnroll/runtime-multiexit-heuristic.ll b/llvm/test/Transforms/LoopUnroll/runtime-multiexit-heuristic.ll
index d3e5e0b..65ef3e4 100644
--- a/llvm/test/Transforms/LoopUnroll/runtime-multiexit-heuristic.ll
+++ b/llvm/test/Transforms/LoopUnroll/runtime-multiexit-heuristic.ll
@@ -19,7 +19,7 @@ define i32 @test1(ptr nocapture %a, i64 %n) {
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[TMP0]], -1
; CHECK-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP0]], 7
; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i64 [[TMP1]], 7
-; CHECK-NEXT: br i1 [[TMP2]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[ENTRY_NEW:%.*]]
+; CHECK-NEXT: br i1 [[TMP2]], label [[HEADER_EPIL_PREHEADER:%.*]], label [[ENTRY_NEW:%.*]]
; CHECK: entry.new:
; CHECK-NEXT: [[UNROLL_ITER:%.*]] = and i64 [[TMP0]], -8
; CHECK-NEXT: br label [[HEADER:%.*]]
@@ -94,20 +94,19 @@ define i32 @test1(ptr nocapture %a, i64 %n) {
; CHECK-NEXT: [[INDVARS_IV_NEXT_7]] = add i64 [[INDVARS_IV]], 8
; CHECK-NEXT: [[NITER_NEXT_7]] = add i64 [[NITER]], 8
; CHECK-NEXT: [[NITER_NCMP_7:%.*]] = icmp eq i64 [[NITER_NEXT_7]], [[UNROLL_ITER]]
-; CHECK-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA_LOOPEXIT:%.*]], label [[HEADER]]
-; CHECK: latchexit.unr-lcssa.loopexit:
-; CHECK-NEXT: br label [[LATCHEXIT_UNR_LCSSA]]
+; CHECK-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[HEADER]]
; CHECK: latchexit.unr-lcssa:
-; CHECK-NEXT: [[SUM_0_LCSSA_PH:%.*]] = phi i32 [ poison, [[ENTRY:%.*]] ], [ [[ADD_7]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; CHECK-NEXT: [[INDVARS_IV_UNR:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[INDVARS_IV_NEXT_7]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; CHECK-NEXT: [[SUM_02_UNR:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[ADD_7]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
; CHECK-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
-; CHECK-NEXT: br i1 [[LCMP_MOD_NOT]], label [[LATCHEXIT:%.*]], label [[HEADER_EPIL_PREHEADER:%.*]]
+; CHECK-NEXT: br i1 [[LCMP_MOD_NOT]], label [[LATCHEXIT:%.*]], label [[HEADER_EPIL_PREHEADER]]
; CHECK: header.epil.preheader:
+; CHECK-NEXT: [[INDVARS_IV_EPIL_INIT:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT_7]], [[LATCHEXIT_UNR_LCSSA]] ]
+; CHECK-NEXT: [[SUM_02_EPIL_INIT:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[ADD_7]], [[LATCHEXIT_UNR_LCSSA]] ]
+; CHECK-NEXT: [[LCMP_MOD3:%.*]] = icmp ne i64 [[XTRAITER]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[LCMP_MOD3]])
; CHECK-NEXT: br label [[HEADER_EPIL:%.*]]
; CHECK: header.epil:
-; CHECK-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_UNR]], [[HEADER_EPIL_PREHEADER]] ]
-; CHECK-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_UNR]], [[HEADER_EPIL_PREHEADER]] ]
+; CHECK-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
+; CHECK-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
; CHECK-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ [[EPIL_ITER_NEXT:%.*]], [[LATCH_EPIL]] ], [ 0, [[HEADER_EPIL_PREHEADER]] ]
; CHECK-NEXT: br label [[FOR_EXITING_BLOCK_EPIL:%.*]]
; CHECK: for.exiting_block.epil:
@@ -124,11 +123,11 @@ define i32 @test1(ptr nocapture %a, i64 %n) {
; CHECK: latchexit.epilog-lcssa:
; CHECK-NEXT: br label [[LATCHEXIT]]
; CHECK: latchexit:
-; CHECK-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[SUM_0_LCSSA_PH]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[ADD_EPIL]], [[LATCHEXIT_EPILOG_LCSSA]] ]
+; CHECK-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[ADD_7]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[ADD_EPIL]], [[LATCHEXIT_EPILOG_LCSSA]] ]
; CHECK-NEXT: ret i32 [[SUM_0_LCSSA]]
; CHECK: otherexit.loopexit:
; CHECK-NEXT: br label [[OTHEREXIT:%.*]]
-; CHECK: otherexit.loopexit3:
+; CHECK: otherexit.loopexit4:
; CHECK-NEXT: br label [[OTHEREXIT]]
; CHECK: otherexit:
; CHECK-NEXT: [[SUM_02_LCSSA:%.*]] = phi i32 [ [[SUM_02]], [[OTHEREXIT_LOOPEXIT]] ], [ [[SUM_02_EPIL]], [[OTHEREXIT_LOOPEXIT3]] ]
@@ -166,7 +165,7 @@ define i32 @test1(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[TMP1:%.*]] = add i64 [[TMP0]], -1
; ENABLED-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP0]], 7
; ENABLED-NEXT: [[TMP2:%.*]] = icmp ult i64 [[TMP1]], 7
-; ENABLED-NEXT: br i1 [[TMP2]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[ENTRY_NEW:%.*]]
+; ENABLED-NEXT: br i1 [[TMP2]], label [[HEADER_EPIL_PREHEADER:%.*]], label [[ENTRY_NEW:%.*]]
; ENABLED: entry.new:
; ENABLED-NEXT: [[UNROLL_ITER:%.*]] = sub i64 [[TMP0]], [[XTRAITER]]
; ENABLED-NEXT: br label [[HEADER:%.*]]
@@ -248,23 +247,22 @@ define i32 @test1(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[INDVARS_IV_NEXT_7]] = add i64 [[INDVARS_IV]], 8
; ENABLED-NEXT: [[NITER_NEXT_7]] = add i64 [[NITER]], 8
; ENABLED-NEXT: [[NITER_NCMP_7:%.*]] = icmp eq i64 [[NITER_NEXT_7]], [[UNROLL_ITER]]
-; ENABLED-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA_LOOPEXIT:%.*]], label [[HEADER]]
-; ENABLED: latchexit.unr-lcssa.loopexit:
+; ENABLED-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[HEADER]]
+; ENABLED: latchexit.unr-lcssa:
; ENABLED-NEXT: [[SUM_0_LCSSA_PH_PH:%.*]] = phi i32 [ [[ADD_7]], [[LATCH_7]] ]
; ENABLED-NEXT: [[INDVARS_IV_UNR_PH:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_7]], [[LATCH_7]] ]
; ENABLED-NEXT: [[SUM_02_UNR_PH:%.*]] = phi i32 [ [[ADD_7]], [[LATCH_7]] ]
-; ENABLED-NEXT: br label [[LATCHEXIT_UNR_LCSSA]]
-; ENABLED: latchexit.unr-lcssa:
-; ENABLED-NEXT: [[SUM_0_LCSSA_PH:%.*]] = phi i32 [ poison, [[ENTRY:%.*]] ], [ [[SUM_0_LCSSA_PH_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; ENABLED-NEXT: [[INDVARS_IV_UNR:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[INDVARS_IV_UNR_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; ENABLED-NEXT: [[SUM_02_UNR:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_02_UNR_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
; ENABLED-NEXT: [[LCMP_MOD:%.*]] = icmp ne i64 [[XTRAITER]], 0
-; ENABLED-NEXT: br i1 [[LCMP_MOD]], label [[HEADER_EPIL_PREHEADER:%.*]], label [[LATCHEXIT:%.*]]
+; ENABLED-NEXT: br i1 [[LCMP_MOD]], label [[HEADER_EPIL_PREHEADER]], label [[LATCHEXIT:%.*]]
; ENABLED: header.epil.preheader:
+; ENABLED-NEXT: [[INDVARS_IV_EPIL_INIT:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_UNR_PH]], [[LATCHEXIT_UNR_LCSSA]] ]
+; ENABLED-NEXT: [[SUM_02_EPIL_INIT:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_02_UNR_PH]], [[LATCHEXIT_UNR_LCSSA]] ]
+; ENABLED-NEXT: [[LCMP_MOD3:%.*]] = icmp ne i64 [[XTRAITER]], 0
+; ENABLED-NEXT: call void @llvm.assume(i1 [[LCMP_MOD3]])
; ENABLED-NEXT: br label [[HEADER_EPIL:%.*]]
; ENABLED: header.epil:
-; ENABLED-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_UNR]], [[HEADER_EPIL_PREHEADER]] ]
-; ENABLED-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_UNR]], [[HEADER_EPIL_PREHEADER]] ]
+; ENABLED-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
+; ENABLED-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
; ENABLED-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ 0, [[HEADER_EPIL_PREHEADER]] ], [ [[EPIL_ITER_NEXT:%.*]], [[LATCH_EPIL]] ]
; ENABLED-NEXT: br label [[FOR_EXITING_BLOCK_EPIL:%.*]]
; ENABLED: for.exiting_block.epil:
@@ -283,12 +281,12 @@ define i32 @test1(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[SUM_0_LCSSA_PH2:%.*]] = phi i32 [ [[ADD_EPIL]], [[LATCH_EPIL]] ]
; ENABLED-NEXT: br label [[LATCHEXIT]]
; ENABLED: latchexit:
-; ENABLED-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[SUM_0_LCSSA_PH]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[SUM_0_LCSSA_PH2]], [[LATCHEXIT_EPILOG_LCSSA]] ]
+; ENABLED-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[SUM_0_LCSSA_PH_PH]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[SUM_0_LCSSA_PH2]], [[LATCHEXIT_EPILOG_LCSSA]] ]
; ENABLED-NEXT: ret i32 [[SUM_0_LCSSA]]
; ENABLED: otherexit.loopexit:
; ENABLED-NEXT: [[SUM_02_LCSSA_PH:%.*]] = phi i32 [ [[SUM_02]], [[FOR_EXITING_BLOCK]] ], [ [[ADD]], [[FOR_EXITING_BLOCK_1]] ], [ [[ADD_1]], [[FOR_EXITING_BLOCK_2]] ], [ [[ADD_2]], [[FOR_EXITING_BLOCK_3]] ], [ [[ADD_3]], [[FOR_EXITING_BLOCK_4]] ], [ [[ADD_4]], [[FOR_EXITING_BLOCK_5]] ], [ [[ADD_5]], [[FOR_EXITING_BLOCK_6]] ], [ [[ADD_6]], [[FOR_EXITING_BLOCK_7]] ]
; ENABLED-NEXT: br label [[OTHEREXIT:%.*]]
-; ENABLED: otherexit.loopexit3:
+; ENABLED: otherexit.loopexit4:
; ENABLED-NEXT: [[SUM_02_LCSSA_PH4:%.*]] = phi i32 [ [[SUM_02_EPIL]], [[FOR_EXITING_BLOCK_EPIL]] ]
; ENABLED-NEXT: br label [[OTHEREXIT]]
; ENABLED: otherexit:
@@ -380,7 +378,7 @@ define i32 @test2(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[TMP1:%.*]] = add i64 [[TMP0]], -1
; ENABLED-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP0]], 7
; ENABLED-NEXT: [[TMP2:%.*]] = icmp ult i64 [[TMP1]], 7
-; ENABLED-NEXT: br i1 [[TMP2]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[ENTRY_NEW:%.*]]
+; ENABLED-NEXT: br i1 [[TMP2]], label [[HEADER_EPIL_PREHEADER:%.*]], label [[ENTRY_NEW:%.*]]
; ENABLED: entry.new:
; ENABLED-NEXT: [[UNROLL_ITER:%.*]] = sub i64 [[TMP0]], [[XTRAITER]]
; ENABLED-NEXT: br label [[HEADER:%.*]]
@@ -462,23 +460,22 @@ define i32 @test2(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[INDVARS_IV_NEXT_7]] = add i64 [[INDVARS_IV]], 8
; ENABLED-NEXT: [[NITER_NEXT_7]] = add i64 [[NITER]], 8
; ENABLED-NEXT: [[NITER_NCMP_7:%.*]] = icmp eq i64 [[NITER_NEXT_7]], [[UNROLL_ITER]]
-; ENABLED-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA_LOOPEXIT:%.*]], label [[HEADER]]
-; ENABLED: latchexit.unr-lcssa.loopexit:
+; ENABLED-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[HEADER]]
+; ENABLED: latchexit.unr-lcssa:
; ENABLED-NEXT: [[SUM_0_LCSSA_PH_PH:%.*]] = phi i32 [ [[ADD_7]], [[LATCH_7]] ]
; ENABLED-NEXT: [[INDVARS_IV_UNR_PH:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_7]], [[LATCH_7]] ]
; ENABLED-NEXT: [[SUM_02_UNR_PH:%.*]] = phi i32 [ [[ADD_7]], [[LATCH_7]] ]
-; ENABLED-NEXT: br label [[LATCHEXIT_UNR_LCSSA]]
-; ENABLED: latchexit.unr-lcssa:
-; ENABLED-NEXT: [[SUM_0_LCSSA_PH:%.*]] = phi i32 [ poison, [[ENTRY:%.*]] ], [ [[SUM_0_LCSSA_PH_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; ENABLED-NEXT: [[INDVARS_IV_UNR:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[INDVARS_IV_UNR_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; ENABLED-NEXT: [[SUM_02_UNR:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_02_UNR_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
; ENABLED-NEXT: [[LCMP_MOD:%.*]] = icmp ne i64 [[XTRAITER]], 0
-; ENABLED-NEXT: br i1 [[LCMP_MOD]], label [[HEADER_EPIL_PREHEADER:%.*]], label [[LATCHEXIT:%.*]]
+; ENABLED-NEXT: br i1 [[LCMP_MOD]], label [[HEADER_EPIL_PREHEADER]], label [[LATCHEXIT:%.*]]
; ENABLED: header.epil.preheader:
+; ENABLED-NEXT: [[INDVARS_IV_EPIL_INIT:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_UNR_PH]], [[LATCHEXIT_UNR_LCSSA]] ]
+; ENABLED-NEXT: [[SUM_02_EPIL_INIT:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_02_UNR_PH]], [[LATCHEXIT_UNR_LCSSA]] ]
+; ENABLED-NEXT: [[LCMP_MOD2:%.*]] = icmp ne i64 [[XTRAITER]], 0
+; ENABLED-NEXT: call void @llvm.assume(i1 [[LCMP_MOD2]])
; ENABLED-NEXT: br label [[HEADER_EPIL:%.*]]
; ENABLED: header.epil:
-; ENABLED-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_UNR]], [[HEADER_EPIL_PREHEADER]] ]
-; ENABLED-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_UNR]], [[HEADER_EPIL_PREHEADER]] ]
+; ENABLED-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
+; ENABLED-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
; ENABLED-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ 0, [[HEADER_EPIL_PREHEADER]] ], [ [[EPIL_ITER_NEXT:%.*]], [[LATCH_EPIL]] ]
; ENABLED-NEXT: br label [[FOR_EXITING_BLOCK_EPIL:%.*]]
; ENABLED: for.exiting_block.epil:
@@ -497,12 +494,12 @@ define i32 @test2(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[SUM_0_LCSSA_PH1:%.*]] = phi i32 [ [[ADD_EPIL]], [[LATCH_EPIL]] ]
; ENABLED-NEXT: br label [[LATCHEXIT]]
; ENABLED: latchexit:
-; ENABLED-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[SUM_0_LCSSA_PH]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[SUM_0_LCSSA_PH1]], [[LATCHEXIT_EPILOG_LCSSA]] ]
+; ENABLED-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[SUM_0_LCSSA_PH_PH]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[SUM_0_LCSSA_PH1]], [[LATCHEXIT_EPILOG_LCSSA]] ]
; ENABLED-NEXT: ret i32 [[SUM_0_LCSSA]]
; ENABLED: otherexit.loopexit:
; ENABLED-NEXT: [[RVAL_PH:%.*]] = phi i32 [ [[SUM_02]], [[FOR_EXITING_BLOCK]] ], [ [[ADD]], [[FOR_EXITING_BLOCK_1]] ], [ [[ADD_1]], [[FOR_EXITING_BLOCK_2]] ], [ [[ADD_2]], [[FOR_EXITING_BLOCK_3]] ], [ [[ADD_3]], [[FOR_EXITING_BLOCK_4]] ], [ [[ADD_4]], [[FOR_EXITING_BLOCK_5]] ], [ [[ADD_5]], [[FOR_EXITING_BLOCK_6]] ], [ [[ADD_6]], [[FOR_EXITING_BLOCK_7]] ]
; ENABLED-NEXT: br label [[OTHEREXIT:%.*]]
-; ENABLED: otherexit.loopexit2:
+; ENABLED: otherexit.loopexit3:
; ENABLED-NEXT: [[RVAL_PH3:%.*]] = phi i32 [ [[SUM_02_EPIL]], [[FOR_EXITING_BLOCK_EPIL]] ]
; ENABLED-NEXT: br label [[OTHEREXIT]]
; ENABLED: otherexit:
@@ -747,7 +744,7 @@ define i32 @test5(ptr nocapture %a, i64 %n) {
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[TMP0]], -1
; CHECK-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP0]], 7
; CHECK-NEXT: [[TMP2:%.*]] = icmp ult i64 [[TMP1]], 7
-; CHECK-NEXT: br i1 [[TMP2]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[ENTRY_NEW:%.*]]
+; CHECK-NEXT: br i1 [[TMP2]], label [[HEADER_EPIL_PREHEADER:%.*]], label [[ENTRY_NEW:%.*]]
; CHECK: entry.new:
; CHECK-NEXT: [[UNROLL_ITER:%.*]] = and i64 [[TMP0]], -8
; CHECK-NEXT: br label [[HEADER:%.*]]
@@ -822,20 +819,19 @@ define i32 @test5(ptr nocapture %a, i64 %n) {
; CHECK-NEXT: [[INDVARS_IV_NEXT_7]] = add i64 [[INDVARS_IV]], 8
; CHECK-NEXT: [[NITER_NEXT_7]] = add i64 [[NITER]], 8
; CHECK-NEXT: [[NITER_NCMP_7:%.*]] = icmp eq i64 [[NITER_NEXT_7]], [[UNROLL_ITER]]
-; CHECK-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA_LOOPEXIT:%.*]], label [[HEADER]]
-; CHECK: latchexit.unr-lcssa.loopexit:
-; CHECK-NEXT: br label [[LATCHEXIT_UNR_LCSSA]]
+; CHECK-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[HEADER]]
; CHECK: latchexit.unr-lcssa:
-; CHECK-NEXT: [[SUM_0_LCSSA_PH:%.*]] = phi i32 [ poison, [[ENTRY:%.*]] ], [ [[ADD_7]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; CHECK-NEXT: [[INDVARS_IV_UNR:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[INDVARS_IV_NEXT_7]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; CHECK-NEXT: [[SUM_02_UNR:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[ADD_7]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
; CHECK-NEXT: [[LCMP_MOD_NOT:%.*]] = icmp eq i64 [[XTRAITER]], 0
-; CHECK-NEXT: br i1 [[LCMP_MOD_NOT]], label [[LATCHEXIT:%.*]], label [[HEADER_EPIL_PREHEADER:%.*]]
+; CHECK-NEXT: br i1 [[LCMP_MOD_NOT]], label [[LATCHEXIT:%.*]], label [[HEADER_EPIL_PREHEADER]]
; CHECK: header.epil.preheader:
+; CHECK-NEXT: [[INDVARS_IV_EPIL_INIT:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_NEXT_7]], [[LATCHEXIT_UNR_LCSSA]] ]
+; CHECK-NEXT: [[SUM_02_EPIL_INIT:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[ADD_7]], [[LATCHEXIT_UNR_LCSSA]] ]
+; CHECK-NEXT: [[LCMP_MOD3:%.*]] = icmp ne i64 [[XTRAITER]], 0
+; CHECK-NEXT: call void @llvm.assume(i1 [[LCMP_MOD3]])
; CHECK-NEXT: br label [[HEADER_EPIL:%.*]]
; CHECK: header.epil:
-; CHECK-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_UNR]], [[HEADER_EPIL_PREHEADER]] ]
-; CHECK-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_UNR]], [[HEADER_EPIL_PREHEADER]] ]
+; CHECK-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
+; CHECK-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
; CHECK-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ [[EPIL_ITER_NEXT:%.*]], [[LATCH_EPIL]] ], [ 0, [[HEADER_EPIL_PREHEADER]] ]
; CHECK-NEXT: br label [[FOR_EXITING_BLOCK_EPIL:%.*]]
; CHECK: for.exiting_block.epil:
@@ -852,11 +848,11 @@ define i32 @test5(ptr nocapture %a, i64 %n) {
; CHECK: latchexit.epilog-lcssa:
; CHECK-NEXT: br label [[LATCHEXIT]]
; CHECK: latchexit:
-; CHECK-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[SUM_0_LCSSA_PH]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[ADD_EPIL]], [[LATCHEXIT_EPILOG_LCSSA]] ]
+; CHECK-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[ADD_7]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[ADD_EPIL]], [[LATCHEXIT_EPILOG_LCSSA]] ]
; CHECK-NEXT: ret i32 [[SUM_0_LCSSA]]
; CHECK: otherexit.loopexit:
; CHECK-NEXT: br label [[OTHEREXIT:%.*]]
-; CHECK: otherexit.loopexit3:
+; CHECK: otherexit.loopexit4:
; CHECK-NEXT: br label [[OTHEREXIT]]
; CHECK: otherexit:
; CHECK-NEXT: [[SUM_02_LCSSA:%.*]] = phi i32 [ [[SUM_02]], [[OTHEREXIT_LOOPEXIT]] ], [ [[SUM_02_EPIL]], [[OTHEREXIT_LOOPEXIT3]] ]
@@ -899,7 +895,7 @@ define i32 @test5(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[TMP1:%.*]] = add i64 [[TMP0]], -1
; ENABLED-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP0]], 7
; ENABLED-NEXT: [[TMP2:%.*]] = icmp ult i64 [[TMP1]], 7
-; ENABLED-NEXT: br i1 [[TMP2]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[ENTRY_NEW:%.*]]
+; ENABLED-NEXT: br i1 [[TMP2]], label [[HEADER_EPIL_PREHEADER:%.*]], label [[ENTRY_NEW:%.*]]
; ENABLED: entry.new:
; ENABLED-NEXT: [[UNROLL_ITER:%.*]] = sub i64 [[TMP0]], [[XTRAITER]]
; ENABLED-NEXT: br label [[HEADER:%.*]]
@@ -981,23 +977,22 @@ define i32 @test5(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[INDVARS_IV_NEXT_7]] = add i64 [[INDVARS_IV]], 8
; ENABLED-NEXT: [[NITER_NEXT_7]] = add i64 [[NITER]], 8
; ENABLED-NEXT: [[NITER_NCMP_7:%.*]] = icmp eq i64 [[NITER_NEXT_7]], [[UNROLL_ITER]]
-; ENABLED-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA_LOOPEXIT:%.*]], label [[HEADER]]
-; ENABLED: latchexit.unr-lcssa.loopexit:
+; ENABLED-NEXT: br i1 [[NITER_NCMP_7]], label [[LATCHEXIT_UNR_LCSSA:%.*]], label [[HEADER]]
+; ENABLED: latchexit.unr-lcssa:
; ENABLED-NEXT: [[SUM_0_LCSSA_PH_PH:%.*]] = phi i32 [ [[ADD_7]], [[LATCH_7]] ]
; ENABLED-NEXT: [[INDVARS_IV_UNR_PH:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_7]], [[LATCH_7]] ]
; ENABLED-NEXT: [[SUM_02_UNR_PH:%.*]] = phi i32 [ [[ADD_7]], [[LATCH_7]] ]
-; ENABLED-NEXT: br label [[LATCHEXIT_UNR_LCSSA]]
-; ENABLED: latchexit.unr-lcssa:
-; ENABLED-NEXT: [[SUM_0_LCSSA_PH:%.*]] = phi i32 [ poison, [[ENTRY:%.*]] ], [ [[SUM_0_LCSSA_PH_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; ENABLED-NEXT: [[INDVARS_IV_UNR:%.*]] = phi i64 [ 0, [[ENTRY]] ], [ [[INDVARS_IV_UNR_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
-; ENABLED-NEXT: [[SUM_02_UNR:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_02_UNR_PH]], [[LATCHEXIT_UNR_LCSSA_LOOPEXIT]] ]
; ENABLED-NEXT: [[LCMP_MOD:%.*]] = icmp ne i64 [[XTRAITER]], 0
-; ENABLED-NEXT: br i1 [[LCMP_MOD]], label [[HEADER_EPIL_PREHEADER:%.*]], label [[LATCHEXIT:%.*]]
+; ENABLED-NEXT: br i1 [[LCMP_MOD]], label [[HEADER_EPIL_PREHEADER]], label [[LATCHEXIT:%.*]]
; ENABLED: header.epil.preheader:
+; ENABLED-NEXT: [[INDVARS_IV_EPIL_INIT:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[INDVARS_IV_UNR_PH]], [[LATCHEXIT_UNR_LCSSA]] ]
+; ENABLED-NEXT: [[SUM_02_EPIL_INIT:%.*]] = phi i32 [ 0, [[ENTRY]] ], [ [[SUM_02_UNR_PH]], [[LATCHEXIT_UNR_LCSSA]] ]
+; ENABLED-NEXT: [[LCMP_MOD3:%.*]] = icmp ne i64 [[XTRAITER]], 0
+; ENABLED-NEXT: call void @llvm.assume(i1 [[LCMP_MOD3]])
; ENABLED-NEXT: br label [[HEADER_EPIL:%.*]]
; ENABLED: header.epil:
-; ENABLED-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_UNR]], [[HEADER_EPIL_PREHEADER]] ]
-; ENABLED-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_UNR]], [[HEADER_EPIL_PREHEADER]] ]
+; ENABLED-NEXT: [[INDVARS_IV_EPIL:%.*]] = phi i64 [ [[INDVARS_IV_NEXT_EPIL:%.*]], [[LATCH_EPIL:%.*]] ], [ [[INDVARS_IV_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
+; ENABLED-NEXT: [[SUM_02_EPIL:%.*]] = phi i32 [ [[ADD_EPIL:%.*]], [[LATCH_EPIL]] ], [ [[SUM_02_EPIL_INIT]], [[HEADER_EPIL_PREHEADER]] ]
; ENABLED-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ 0, [[HEADER_EPIL_PREHEADER]] ], [ [[EPIL_ITER_NEXT:%.*]], [[LATCH_EPIL]] ]
; ENABLED-NEXT: br label [[FOR_EXITING_BLOCK_EPIL:%.*]]
; ENABLED: for.exiting_block.epil:
@@ -1016,13 +1011,13 @@ define i32 @test5(ptr nocapture %a, i64 %n) {
; ENABLED-NEXT: [[SUM_0_LCSSA_PH2:%.*]] = phi i32 [ [[ADD_EPIL]], [[LATCH_EPIL]] ]
; ENABLED-NEXT: br label [[LATCHEXIT]]
; ENABLED: latchexit:
-; ENABLED-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[SUM_0_LCSSA_PH]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[SUM_0_LCSSA_PH2]], [[LATCHEXIT_EPILOG_LCSSA]] ]
+; ENABLED-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[SUM_0_LCSSA_PH_PH]], [[LATCHEXIT_UNR_LCSSA]] ], [ [[SUM_0_LCSSA_PH2]], [[LATCHEXIT_EPILOG_LCSSA]] ]
; ENABLED-NEXT: ret i32 [[SUM_0_LCSSA]]
; ENABLED: otherexit.loopexit:
; ENABLED-NEXT: [[SUM_02_LCSSA_PH:%.*]] = phi i32 [ [[SUM_02]], [[FOR_EXITING_BLOCK]] ], [ [[ADD]], [[FOR_EXITING_BLOCK_1]] ], [ [[ADD_1]], [[FOR_EXITING_BLOCK_2]] ], [ [[ADD_2]], [[FOR_EXITING_BLOCK_3]] ], [ [[ADD_3]], [[FOR_EXITING_BLOCK_4]] ], [ [[ADD_4]], [[FOR_EXITING_BLOCK_5]] ], [ [[ADD_5]], [[FOR_EXITING_BLOCK_6]] ], [ [[ADD_6]], [[FOR_EXITING_BLOCK_7]] ]
; ENABLED-NEXT: [[RVAL_PH:%.*]] = phi i32 [ [[SUM_02]], [[FOR_EXITING_BLOCK]] ], [ [[ADD]], [[FOR_EXITING_BLOCK_1]] ], [ [[ADD_1]], [[FOR_EXITING_BLOCK_2]] ], [ [[ADD_2]], [[FOR_EXITING_BLOCK_3]] ], [ [[ADD_3]], [[FOR_EXITING_BLOCK_4]] ], [ [[ADD_4]], [[FOR_EXITING_BLOCK_5]] ], [ [[ADD_5]], [[FOR_EXITING_BLOCK_6]] ], [ [[ADD_6]], [[FOR_EXITING_BLOCK_7]] ]
; ENABLED-NEXT: br label [[OTHEREXIT:%.*]]
-; ENABLED: otherexit.loopexit3:
+; ENABLED: otherexit.loopexit4:
; ENABLED-NEXT: [[SUM_02_LCSSA_PH4:%.*]] = phi i32 [ [[SUM_02_EPIL]], [[FOR_EXITING_BLOCK_EPIL]] ]
; ENABLED-NEXT: [[RVAL_PH5:%.*]] = phi i32 [ [[SUM_02_EPIL]], [[FOR_EXITING_BLOCK_EPIL]] ]
; ENABLED-NEXT: br label [[OTHEREXIT]]
generated by cgit v1.1 at 2025-10-08 00:48:22 +0000