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llvm-project/llvm/test/Transforms/LoopUnroll/runtime-exit-phi-scev-invalidation.ll
Joel E. Denny cc8ff73fba
[LoopUnroll] Fix block frequencies for epilogue (#159163) 
As another step in issue #135812, this patch fixes block frequencies for
partial loop unrolling with an epilogue remainder loop. It does not
fully handle the case when the epilogue loop itself is unrolled. That
will be handled in the next patch.

For the guard and latch of each of the unrolled loop and epilogue loop,
this patch sets branch weights derived directly from the original loop
latch branch weights. The total frequency of the original loop body,
summed across all its occurrences in the unrolled loop and epilogue
loop, is the same as in the original loop. This patch also sets
`llvm.loop.estimated_trip_count` for the epilogue loop instead of
relying on the epilogue's latch branch weights to imply it.

This patch fixes branch weights in tests that PR #157754 adversely
affected.
2025-10-31 11:01:42 -04:00

356 lines
18 KiB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='loop-unroll<runtime;partial>' -S %s | FileCheck %s
target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128-ni:1-p2:32:8:8:32-ni:2"
; Make sure SCEVs for phis are properly invalidated after phis are modified.
declare void @llvm.experimental.deoptimize.isVoid(...)
declare i32 @get()
define void @pr56282() {
; CHECK-LABEL: @pr56282(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
; CHECK: outer.header:
; CHECK-NEXT: [[OUTER_IV:%.*]] = phi i64 [ 0, [[ENTRY:%.*]] ], [ [[OUTER_IV_NEXT:%.*]], [[INNER_2:%.*]] ]
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[OUTER_IV]], 1
; CHECK-NEXT: [[TMP1:%.*]] = freeze i64 [[TMP0]]
; CHECK-NEXT: [[TMP2:%.*]] = add i64 [[TMP1]], -1
; CHECK-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP1]], 7
; CHECK-NEXT: [[TMP3:%.*]] = icmp ult i64 [[TMP2]], 7
; CHECK-NEXT: br i1 [[TMP3]], label [[INNER_1_HEADER_EPIL_PREHEADER:%.*]], label [[OUTER_HEADER_NEW:%.*]]
; CHECK: outer.header.new:
; CHECK-NEXT: [[UNROLL_ITER:%.*]] = sub i64 [[TMP1]], [[XTRAITER]]
; CHECK-NEXT: br label [[INNER_1_HEADER:%.*]]
; CHECK: inner.1.header:
; CHECK-NEXT: [[INNER_1_IV:%.*]] = phi i64 [ 0, [[OUTER_HEADER_NEW]] ], [ [[INNER_1_IV_NEXT_7:%.*]], [[INNER_1_LATCH_7:%.*]] ]
; CHECK-NEXT: [[NITER:%.*]] = phi i64 [ 0, [[OUTER_HEADER_NEW]] ], [ [[NITER_NEXT_7:%.*]], [[INNER_1_LATCH_7]] ]
; CHECK-NEXT: [[V:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1:%.*]] = icmp ugt i32 [[V]], 0
; CHECK-NEXT: br i1 [[C_1]], label [[INNER_1_LATCH:%.*]], label [[EXIT_DEOPT_LOOPEXIT:%.*]]
; CHECK: inner.1.latch:
; CHECK-NEXT: [[V_1:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1_1:%.*]] = icmp ugt i32 [[V_1]], 0
; CHECK-NEXT: br i1 [[C_1_1]], label [[INNER_1_LATCH_1:%.*]], label [[EXIT_DEOPT_LOOPEXIT]]
; CHECK: inner.1.latch.1:
; CHECK-NEXT: [[V_2:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1_2:%.*]] = icmp ugt i32 [[V_2]], 0
; CHECK-NEXT: br i1 [[C_1_2]], label [[INNER_1_LATCH_2:%.*]], label [[EXIT_DEOPT_LOOPEXIT]]
; CHECK: inner.1.latch.2:
; CHECK-NEXT: [[V_3:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1_3:%.*]] = icmp ugt i32 [[V_3]], 0
; CHECK-NEXT: br i1 [[C_1_3]], label [[INNER_1_LATCH_3:%.*]], label [[EXIT_DEOPT_LOOPEXIT]]
; CHECK: inner.1.latch.3:
; CHECK-NEXT: [[V_4:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1_4:%.*]] = icmp ugt i32 [[V_4]], 0
; CHECK-NEXT: br i1 [[C_1_4]], label [[INNER_1_LATCH_4:%.*]], label [[EXIT_DEOPT_LOOPEXIT]]
; CHECK: inner.1.latch.4:
; CHECK-NEXT: [[V_5:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1_5:%.*]] = icmp ugt i32 [[V_5]], 0
; CHECK-NEXT: br i1 [[C_1_5]], label [[INNER_1_LATCH_5:%.*]], label [[EXIT_DEOPT_LOOPEXIT]]
; CHECK: inner.1.latch.5:
; CHECK-NEXT: [[V_6:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1_6:%.*]] = icmp ugt i32 [[V_6]], 0
; CHECK-NEXT: br i1 [[C_1_6]], label [[INNER_1_LATCH_6:%.*]], label [[EXIT_DEOPT_LOOPEXIT]]
; CHECK: inner.1.latch.6:
; CHECK-NEXT: [[INNER_1_IV_NEXT_7]] = add nuw nsw i64 [[INNER_1_IV]], 8
; CHECK-NEXT: [[V_7:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1_7:%.*]] = icmp ugt i32 [[V_7]], 0
; CHECK-NEXT: br i1 [[C_1_7]], label [[INNER_1_LATCH_7]], label [[EXIT_DEOPT_LOOPEXIT]]
; CHECK: inner.1.latch.7:
; CHECK-NEXT: [[NITER_NEXT_7]] = add i64 [[NITER]], 8
; CHECK-NEXT: [[NITER_NCMP_7:%.*]] = icmp ne i64 [[NITER_NEXT_7]], [[UNROLL_ITER]]
; CHECK-NEXT: br i1 [[NITER_NCMP_7]], label [[INNER_1_HEADER]], label [[OUTER_MIDDLE_UNR_LCSSA:%.*]]
; CHECK: outer.middle.unr-lcssa:
; CHECK-NEXT: [[V_LCSSA1_PH_PH:%.*]] = phi i32 [ [[V_7]], [[INNER_1_LATCH_7]] ]
; CHECK-NEXT: [[INNER_1_IV_UNR_PH:%.*]] = phi i64 [ [[INNER_1_IV_NEXT_7]], [[INNER_1_LATCH_7]] ]
; CHECK-NEXT: [[LCMP_MOD:%.*]] = icmp ne i64 [[XTRAITER]], 0
; CHECK-NEXT: br i1 [[LCMP_MOD]], label [[INNER_1_HEADER_EPIL_PREHEADER]], label [[OUTER_MIDDLE:%.*]]
; CHECK: inner.1.header.epil.preheader:
; CHECK-NEXT: [[INNER_1_IV_UNR:%.*]] = phi i64 [ 0, [[OUTER_HEADER]] ], [ [[INNER_1_IV_UNR_PH]], [[OUTER_MIDDLE_UNR_LCSSA]] ]
; CHECK-NEXT: [[LCMP_MOD3:%.*]] = icmp ne i64 [[XTRAITER]], 0
; CHECK-NEXT: call void @llvm.assume(i1 [[LCMP_MOD3]])
; CHECK-NEXT: br label [[INNER_1_HEADER_EPIL:%.*]]
; CHECK: inner.1.header.epil:
; CHECK-NEXT: [[INNER_1_IV_EPIL:%.*]] = phi i64 [ [[INNER_1_IV_UNR]], [[INNER_1_HEADER_EPIL_PREHEADER]] ], [ [[INNER_1_IV_NEXT_EPIL:%.*]], [[INNER_1_LATCH_EPIL:%.*]] ]
; CHECK-NEXT: [[EPIL_ITER:%.*]] = phi i64 [ 0, [[INNER_1_HEADER_EPIL_PREHEADER]] ], [ [[EPIL_ITER_NEXT:%.*]], [[INNER_1_LATCH_EPIL]] ]
; CHECK-NEXT: [[INNER_1_IV_NEXT_EPIL]] = add nuw nsw i64 [[INNER_1_IV_EPIL]], 1
; CHECK-NEXT: [[V_EPIL:%.*]] = call i32 @get()
; CHECK-NEXT: [[C_1_EPIL:%.*]] = icmp ugt i32 [[V_EPIL]], 0
; CHECK-NEXT: br i1 [[C_1_EPIL]], label [[INNER_1_LATCH_EPIL]], label [[EXIT_DEOPT_LOOPEXIT3:%.*]]
; CHECK: inner.1.latch.epil:
; CHECK-NEXT: [[C_2_EPIL:%.*]] = icmp ult i64 [[INNER_1_IV_EPIL]], [[OUTER_IV]]
; CHECK-NEXT: [[EPIL_ITER_NEXT]] = add i64 [[EPIL_ITER]], 1
; CHECK-NEXT: [[EPIL_ITER_CMP:%.*]] = icmp ne i64 [[EPIL_ITER_NEXT]], [[XTRAITER]]
; CHECK-NEXT: br i1 [[EPIL_ITER_CMP]], label [[INNER_1_HEADER_EPIL]], label [[OUTER_MIDDLE_EPILOG_LCSSA:%.*]], !llvm.loop [[LOOP0:![0-9]+]]
; CHECK: outer.middle.epilog-lcssa:
; CHECK-NEXT: [[V_LCSSA1_PH2:%.*]] = phi i32 [ [[V_EPIL]], [[INNER_1_LATCH_EPIL]] ]
; CHECK-NEXT: br label [[OUTER_MIDDLE]]
; CHECK: outer.middle:
; CHECK-NEXT: [[V_LCSSA1:%.*]] = phi i32 [ [[V_LCSSA1_PH_PH]], [[OUTER_MIDDLE_UNR_LCSSA]] ], [ [[V_LCSSA1_PH2]], [[OUTER_MIDDLE_EPILOG_LCSSA]] ]
; CHECK-NEXT: [[C_3:%.*]] = icmp ugt i32 [[V_LCSSA1]], 0
; CHECK-NEXT: br i1 [[C_3]], label [[INNER_2_PREHEADER:%.*]], label [[EXIT:%.*]]
; CHECK: inner.2.preheader:
; CHECK-NEXT: br label [[INNER_2]]
; CHECK: inner.2:
; CHECK-NEXT: [[OUTER_IV_NEXT]] = add nuw i64 [[OUTER_IV]], 1
; CHECK-NEXT: br label [[OUTER_HEADER]]
; CHECK: exit:
; CHECK-NEXT: ret void
; CHECK: exit.deopt.loopexit:
; CHECK-NEXT: br label [[EXIT_DEOPT:%.*]]
; CHECK: exit.deopt.loopexit4:
; CHECK-NEXT: br label [[EXIT_DEOPT]]
; CHECK: exit.deopt:
; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid(i32 0) [ "deopt"() ]
; CHECK-NEXT: ret void
;
entry:
br label %outer.header
outer.header:
%outer.iv = phi i64 [ 0, %entry ], [ %outer.iv.next, %outer.latch ]
br label %inner.1.header
inner.1.header:
%inner.1.iv = phi i64 [ 0, %outer.header ], [ %inner.1.iv.next, %inner.1.latch ]
%inner.1.iv.next = add nuw nsw i64 %inner.1.iv, 1
%v = call i32 @get()
%c.1 = icmp ugt i32 %v, 0
br i1 %c.1, label %inner.1.latch, label %exit.deopt
inner.1.latch: ; preds = %inner.1.header
%c.2 = icmp ult i64 %inner.1.iv, %outer.iv
br i1 %c.2, label %inner.1.header, label %outer.middle
outer.middle:
%c.3 = icmp ugt i32 %v, 0
br i1 %c.3, label %inner.2, label %exit
inner.2:
%inner.2.iv = phi i64 [ 0, %outer.middle ], [ %inner.2.iv.next, %inner.2 ]
%inner.2.iv.next = add nsw i64 %inner.2.iv, -1
%iv.trunc = trunc i64 %inner.2.iv to i32
%c.4 = icmp ult i32 %v, %iv.trunc
br i1 %c.4, label %inner.2, label %outer.latch
outer.latch:
%outer.iv.next = add nuw nsw i64 %outer.iv, 1
br label %outer.header
exit:
ret void
exit.deopt:
call void (...) @llvm.experimental.deoptimize.isVoid(i32 0) [ "deopt"() ]
ret void
}
declare void @bar()
declare void @use.2(ptr, i32)
define void @pr56286(i64 %x, ptr %src, ptr %dst, ptr %ptr.src) !prof !0 {
; CHECK-LABEL: @pr56286(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[SMAX:%.*]] = call i64 @llvm.smax.i64(i64 [[X:%.*]], i64 1)
; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[SMAX]], 1
; CHECK-NEXT: [[TMP1:%.*]] = sub i64 [[TMP0]], [[X]]
; CHECK-NEXT: br label [[OUTER_HEADER:%.*]]
; CHECK: outer.header:
; CHECK-NEXT: [[OUTER_P:%.*]] = phi i32 [ 0, [[BB:%.*]] ], [ [[L_1_LCSSA:%.*]], [[OUTER_LATCH:%.*]] ]
; CHECK-NEXT: [[TMP2:%.*]] = freeze i64 [[TMP1]]
; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[TMP2]], -1
; CHECK-NEXT: [[XTRAITER:%.*]] = and i64 [[TMP2]], 7
; CHECK-NEXT: [[LCMP_MOD:%.*]] = icmp ne i64 [[XTRAITER]], 0
; CHECK-NEXT: br i1 [[LCMP_MOD]], label [[INNER_1_HEADER_PROL_PREHEADER:%.*]], label [[INNER_1_HEADER_PROL_LOOPEXIT:%.*]], !prof [[PROF3:![0-9]+]]
; CHECK: inner.1.header.prol.preheader:
; CHECK-NEXT: br label [[INNER_1_HEADER_PROL:%.*]]
; CHECK: inner.1.header.prol:
; CHECK-NEXT: [[INNER_1_IV_PROL:%.*]] = phi i64 [ [[X]], [[INNER_1_HEADER_PROL_PREHEADER]] ], [ [[INNER_1_IV_NEXT_PROL:%.*]], [[INNER_1_LATCH_PROL:%.*]] ]
; CHECK-NEXT: [[PROL_ITER:%.*]] = phi i64 [ 0, [[INNER_1_HEADER_PROL_PREHEADER]] ], [ [[PROL_ITER_NEXT:%.*]], [[INNER_1_LATCH_PROL]] ]
; CHECK-NEXT: [[CMP_1_PROL:%.*]] = icmp sgt i32 [[OUTER_P]], 0
; CHECK-NEXT: br i1 [[CMP_1_PROL]], label [[EXIT_DEOPT_LOOPEXIT1:%.*]], label [[INNER_1_LATCH_PROL]]
; CHECK: inner.1.latch.prol:
; CHECK-NEXT: [[L_1_PROL:%.*]] = load i32, ptr [[SRC:%.*]], align 4
; CHECK-NEXT: store i32 [[L_1_PROL]], ptr [[DST:%.*]], align 8
; CHECK-NEXT: [[INNER_1_IV_NEXT_PROL]] = add i64 [[INNER_1_IV_PROL]], 1
; CHECK-NEXT: [[CMP_2_PROL:%.*]] = icmp sgt i64 [[INNER_1_IV_PROL]], 0
; CHECK-NEXT: [[PROL_ITER_NEXT]] = add i64 [[PROL_ITER]], 1
; CHECK-NEXT: [[PROL_ITER_CMP:%.*]] = icmp ne i64 [[PROL_ITER_NEXT]], [[XTRAITER]]
; CHECK-NEXT: br i1 [[PROL_ITER_CMP]], label [[INNER_1_HEADER_PROL]], label [[INNER_1_HEADER_PROL_LOOPEXIT_UNR_LCSSA:%.*]], !prof [[PROF4:![0-9]+]], !llvm.loop [[LOOP5:![0-9]+]]
; CHECK: inner.1.header.prol.loopexit.unr-lcssa:
; CHECK-NEXT: [[L_1_LCSSA_UNR_PH:%.*]] = phi i32 [ [[L_1_PROL]], [[INNER_1_LATCH_PROL]] ]
; CHECK-NEXT: [[INNER_1_IV_UNR_PH:%.*]] = phi i64 [ [[INNER_1_IV_NEXT_PROL]], [[INNER_1_LATCH_PROL]] ]
; CHECK-NEXT: br label [[INNER_1_HEADER_PROL_LOOPEXIT]]
; CHECK: inner.1.header.prol.loopexit:
; CHECK-NEXT: [[L_1_LCSSA_UNR:%.*]] = phi i32 [ poison, [[OUTER_HEADER]] ], [ [[L_1_LCSSA_UNR_PH]], [[INNER_1_HEADER_PROL_LOOPEXIT_UNR_LCSSA]] ]
; CHECK-NEXT: [[INNER_1_IV_UNR:%.*]] = phi i64 [ [[X]], [[OUTER_HEADER]] ], [ [[INNER_1_IV_UNR_PH]], [[INNER_1_HEADER_PROL_LOOPEXIT_UNR_LCSSA]] ]
; CHECK-NEXT: [[TMP4:%.*]] = icmp ult i64 [[TMP3]], 7
; CHECK-NEXT: br i1 [[TMP4]], label [[OUTER_MIDDLE:%.*]], label [[OUTER_HEADER_NEW:%.*]], !prof [[PROF6:![0-9]+]]
; CHECK: outer.header.new:
; CHECK-NEXT: br label [[INNER_1_HEADER:%.*]]
; CHECK: inner.1.header:
; CHECK-NEXT: [[INNER_1_IV:%.*]] = phi i64 [ [[INNER_1_IV_UNR]], [[OUTER_HEADER_NEW]] ], [ [[INNER_1_IV_NEXT_7:%.*]], [[INNER_1_LATCH_7:%.*]] ]
; CHECK-NEXT: [[CMP_1:%.*]] = icmp sgt i32 [[OUTER_P]], 0
; CHECK-NEXT: br i1 [[CMP_1]], label [[EXIT_DEOPT_LOOPEXIT:%.*]], label [[INNER_1_LATCH:%.*]]
; CHECK: inner.1.latch:
; CHECK-NEXT: [[L_1:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT: store i32 [[L_1]], ptr [[DST]], align 8
; CHECK-NEXT: br i1 false, label [[EXIT_DEOPT_LOOPEXIT]], label [[INNER_1_LATCH_1:%.*]]
; CHECK: inner.1.latch.1:
; CHECK-NEXT: [[L_1_1:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT: store i32 [[L_1_1]], ptr [[DST]], align 8
; CHECK-NEXT: [[CMP_1_2:%.*]] = icmp sgt i32 [[OUTER_P]], 0
; CHECK-NEXT: br i1 [[CMP_1_2]], label [[EXIT_DEOPT_LOOPEXIT]], label [[INNER_1_LATCH_2:%.*]]
; CHECK: inner.1.latch.2:
; CHECK-NEXT: [[L_1_2:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT: store i32 [[L_1_2]], ptr [[DST]], align 8
; CHECK-NEXT: br i1 false, label [[EXIT_DEOPT_LOOPEXIT]], label [[INNER_1_LATCH_3:%.*]]
; CHECK: inner.1.latch.3:
; CHECK-NEXT: [[L_1_3:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT: store i32 [[L_1_3]], ptr [[DST]], align 8
; CHECK-NEXT: [[CMP_1_4:%.*]] = icmp sgt i32 [[OUTER_P]], 0
; CHECK-NEXT: br i1 [[CMP_1_4]], label [[EXIT_DEOPT_LOOPEXIT]], label [[INNER_1_LATCH_4:%.*]]
; CHECK: inner.1.latch.4:
; CHECK-NEXT: [[L_1_4:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT: store i32 [[L_1_4]], ptr [[DST]], align 8
; CHECK-NEXT: br i1 false, label [[EXIT_DEOPT_LOOPEXIT]], label [[INNER_1_LATCH_5:%.*]]
; CHECK: inner.1.latch.5:
; CHECK-NEXT: [[L_1_5:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT: store i32 [[L_1_5]], ptr [[DST]], align 8
; CHECK-NEXT: [[CMP_1_6:%.*]] = icmp sgt i32 [[OUTER_P]], 0
; CHECK-NEXT: br i1 [[CMP_1_6]], label [[EXIT_DEOPT_LOOPEXIT]], label [[INNER_1_LATCH_6:%.*]]
; CHECK: inner.1.latch.6:
; CHECK-NEXT: [[L_1_6:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT: store i32 [[L_1_6]], ptr [[DST]], align 8
; CHECK-NEXT: [[INNER_1_IV_NEXT_6:%.*]] = add i64 [[INNER_1_IV]], 7
; CHECK-NEXT: br i1 false, label [[EXIT_DEOPT_LOOPEXIT]], label [[INNER_1_LATCH_7]]
; CHECK: inner.1.latch.7:
; CHECK-NEXT: [[L_1_7:%.*]] = load i32, ptr [[SRC]], align 4
; CHECK-NEXT: store i32 [[L_1_7]], ptr [[DST]], align 8
; CHECK-NEXT: [[INNER_1_IV_NEXT_7]] = add i64 [[INNER_1_IV]], 8
; CHECK-NEXT: [[CMP_2_7:%.*]] = icmp sgt i64 [[INNER_1_IV_NEXT_6]], 0
; CHECK-NEXT: br i1 [[CMP_2_7]], label [[OUTER_MIDDLE_UNR_LCSSA:%.*]], label [[INNER_1_HEADER]], !prof [[PROF7:![0-9]+]], !llvm.loop [[LOOP8:![0-9]+]]
; CHECK: outer.middle.unr-lcssa:
; CHECK-NEXT: [[L_1_LCSSA_PH:%.*]] = phi i32 [ [[L_1_7]], [[INNER_1_LATCH_7]] ]
; CHECK-NEXT: br label [[OUTER_MIDDLE]]
; CHECK: outer.middle:
; CHECK-NEXT: [[L_1_LCSSA]] = phi i32 [ [[L_1_LCSSA_UNR]], [[INNER_1_HEADER_PROL_LOOPEXIT]] ], [ [[L_1_LCSSA_PH]], [[OUTER_MIDDLE_UNR_LCSSA]] ]
; CHECK-NEXT: br label [[INNER_2:%.*]]
; CHECK: inner.2:
; CHECK-NEXT: [[INNER_2_IV:%.*]] = phi i32 [ [[L_1_LCSSA]], [[OUTER_MIDDLE]] ], [ [[INNER_2_IV_NEXT_2:%.*]], [[INNER_2]] ]
; CHECK-NEXT: [[TMP15:%.*]] = phi i32 [ 0, [[OUTER_MIDDLE]] ], [ [[TMP33_2:%.*]], [[INNER_2]] ]
; CHECK-NEXT: [[L_2:%.*]] = load i32, ptr [[SRC]], align 8
; CHECK-NEXT: [[INNER_2_IV_NEXT:%.*]] = add i32 [[INNER_2_IV]], 1
; CHECK-NEXT: [[TMP27:%.*]] = load ptr, ptr [[PTR_SRC:%.*]], align 8
; CHECK-NEXT: [[ADD_1:%.*]] = add i32 [[INNER_2_IV]], [[L_2]]
; CHECK-NEXT: [[TMP281:%.*]] = call i32 @use.2(ptr [[TMP27]], i32 [[ADD_1]])
; CHECK-NEXT: [[TMP31:%.*]] = shl nuw nsw i32 [[TMP15]], 16
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: [[L_2_1:%.*]] = load i32, ptr [[SRC]], align 8
; CHECK-NEXT: [[INNER_2_IV_NEXT_1:%.*]] = add i32 [[INNER_2_IV]], 2
; CHECK-NEXT: [[TMP27_1:%.*]] = load ptr, ptr [[PTR_SRC]], align 8
; CHECK-NEXT: [[ADD_1_1:%.*]] = add i32 [[INNER_2_IV_NEXT]], [[L_2_1]]
; CHECK-NEXT: [[TMP281_1:%.*]] = call i32 @use.2(ptr [[TMP27_1]], i32 [[ADD_1_1]])
; CHECK-NEXT: [[TMP32_1:%.*]] = add nuw i32 [[TMP31]], 524288
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: [[L_2_2:%.*]] = load i32, ptr [[SRC]], align 8
; CHECK-NEXT: [[INNER_2_IV_NEXT_2]] = add i32 [[INNER_2_IV]], 3
; CHECK-NEXT: [[TMP27_2:%.*]] = load ptr, ptr [[PTR_SRC]], align 8
; CHECK-NEXT: [[ADD_1_2:%.*]] = add i32 [[INNER_2_IV_NEXT_1]], [[L_2_2]]
; CHECK-NEXT: [[TMP281_2:%.*]] = call i32 @use.2(ptr [[TMP27_2]], i32 [[ADD_1_2]])
; CHECK-NEXT: [[TMP32_2:%.*]] = add nuw i32 [[TMP31]], 786432
; CHECK-NEXT: [[TMP33_2]] = ashr exact i32 [[TMP32_2]], 16
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: [[CMP_3_2:%.*]] = icmp sgt i32 [[TMP32_1]], 2031616
; CHECK-NEXT: br i1 [[CMP_3_2]], label [[OUTER_LATCH]], label [[INNER_2]]
; CHECK: outer.latch:
; CHECK-NEXT: br label [[OUTER_HEADER]]
; CHECK: exit.deopt.loopexit:
; CHECK-NEXT: br label [[EXIT_DEOPT:%.*]]
; CHECK: exit.deopt.loopexit1:
; CHECK-NEXT: br label [[EXIT_DEOPT]]
; CHECK: exit.deopt:
; CHECK-NEXT: call void (...) @llvm.experimental.deoptimize.isVoid(i32 0) [ "deopt"() ]
; CHECK-NEXT: ret void
;
bb:
br label %outer.header
outer.header:
%outer.p = phi i32 [ 0, %bb ], [ %l.1, %outer.latch ]
br label %inner.1.header
inner.1.header:
%inner.1.iv = phi i64 [ %x, %outer.header ], [ %inner.1.iv.next, %inner.1.latch ]
%cmp.1 = icmp sgt i32 %outer.p, 0
br i1 %cmp.1, label %exit.deopt, label %inner.1.latch
inner.1.latch:
%l.1 = load i32, ptr %src, align 4
store i32 %l.1, ptr %dst, align 8
%inner.1.iv.next = add i64 %inner.1.iv, 1
%cmp.2 = icmp sgt i64 %inner.1.iv, 0
br i1 %cmp.2, label %outer.middle, label %inner.1.header, !prof !1
outer.middle:
br label %inner.2
inner.2:
%inner.2.iv = phi i32 [ %l.1, %outer.middle ], [ %inner.2.iv.next, %inner.2 ]
%tmp15 = phi i32 [ 0, %outer.middle ], [ %tmp33, %inner.2 ]
%l.2 = load i32, ptr %src , align 8
%l.3 = load i32, ptr %dst, align 4
%inner.2.iv.next = add i32 %inner.2.iv, 1
%tmp27 = load ptr, ptr %ptr.src
%add.1 = add i32 %inner.2.iv, %l.2
%add.2 = add i32 %add.1, %l.3
%tmp281 = call i32 @use.2(ptr %tmp27, i32 %add.1)
%tmp31 = shl nuw nsw i32 %tmp15, 16
%tmp32 = add nuw i32 %tmp31, 262144
%tmp33 = ashr exact i32 %tmp32, 16
call void @bar()
call void @bar()
call void @bar()
call void @bar()
call void @bar()
call void @bar()
call void @bar()
call void @bar()
%cmp.3 = icmp sgt i32 %tmp31, 2031616
br i1 %cmp.3, label %outer.latch, label %inner.2
outer.latch:
br label %outer.header
exit.deopt:
call void (...) @llvm.experimental.deoptimize.isVoid(i32 0) [ "deopt"() ]
ret void
}
!0 = !{!"function_entry_count", i64 32768}
!1 = !{!"branch_weights", i32 1, i32 32}
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