| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -loop-reduce < %s | FileCheck %s |
| |
| ; These are regression tests for PR43768. |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| |
| ; Test checks that LSR does not hoist increment of %val9 while expanding the other pieces of formula |
| ; to original place in backedge causing incorrect SSA form. |
| define void @test1() { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NEXT: bb: |
| ; CHECK-NEXT: [[VAL:%.*]] = load i32, ptr addrspace(3) undef, align 4 |
| ; CHECK-NEXT: [[VAL1:%.*]] = add i32 undef, 12 |
| ; CHECK-NEXT: [[VAL2:%.*]] = trunc i64 undef to i32 |
| ; CHECK-NEXT: [[VAL3:%.*]] = mul i32 [[VAL1]], [[VAL2]] |
| ; CHECK-NEXT: [[VAL4:%.*]] = sub i32 [[VAL]], [[VAL3]] |
| ; CHECK-NEXT: [[VAL5:%.*]] = ashr i32 undef, undef |
| ; CHECK-NEXT: [[VAL6:%.*]] = sub i32 [[VAL4]], [[VAL5]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = mul i32 [[VAL]], 7 |
| ; CHECK-NEXT: [[TMP1:%.*]] = mul i32 [[VAL3]], 7 |
| ; CHECK-NEXT: [[TMP2:%.*]] = sub i32 [[TMP0]], [[TMP1]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = mul i32 [[VAL5]], 7 |
| ; CHECK-NEXT: [[TMP4:%.*]] = sub i32 [[TMP2]], [[TMP3]] |
| ; CHECK-NEXT: [[TMP5:%.*]] = shl i32 [[VAL6]], 3 |
| ; CHECK-NEXT: br label [[BB7:%.*]] |
| ; CHECK: bb7: |
| ; CHECK-NEXT: [[LSR_IV1:%.*]] = phi i32 [ [[LSR_IV_NEXT2:%.*]], [[BB32:%.*]] ], [ 0, [[BB:%.*]] ] |
| ; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], [[BB32]] ], [ -8, [[BB]] ] |
| ; CHECK-NEXT: [[LSR_IV_NEXT]] = add nsw i64 [[LSR_IV]], 8 |
| ; CHECK-NEXT: [[LSR_IV_NEXT2]] = add nuw nsw i32 [[LSR_IV1]], [[TMP5]] |
| ; CHECK-NEXT: [[VAL10:%.*]] = icmp ult i64 [[LSR_IV_NEXT]], 65536 |
| ; CHECK-NEXT: br i1 [[VAL10]], label [[BB12:%.*]], label [[BB11:%.*]] |
| ; CHECK: bb11: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: bb12: |
| ; CHECK-NEXT: [[VAL14:%.*]] = icmp slt i32 undef, undef |
| ; CHECK-NEXT: br i1 [[VAL14]], label [[BB17:%.*]], label [[BB12_BB15SPLITSPLITSPLITSPLITSPLIT_CRIT_EDGE:%.*]] |
| ; CHECK: bb15splitsplitsplitsplitsplitsplit: |
| ; CHECK-NEXT: br label [[BB15SPLITSPLITSPLITSPLITSPLIT:%.*]] |
| ; CHECK: bb12.bb15splitsplitsplitsplitsplit_crit_edge: |
| ; CHECK-NEXT: [[TMP6:%.*]] = add i32 [[VAL6]], [[LSR_IV1]] |
| ; CHECK-NEXT: br label [[BB15SPLITSPLITSPLITSPLITSPLIT]] |
| ; CHECK: bb15splitsplitsplitsplitsplit: |
| ; CHECK-NEXT: [[VAL16_PH_PH_PH_PH_PH:%.*]] = phi i32 [ [[TMP6]], [[BB12_BB15SPLITSPLITSPLITSPLITSPLIT_CRIT_EDGE]] ], [ [[VAL35:%.*]], [[BB15SPLITSPLITSPLITSPLITSPLITSPLIT:%.*]] ] |
| ; CHECK-NEXT: br label [[BB15SPLITSPLITSPLITSPLIT:%.*]] |
| ; CHECK: bb17.bb15splitsplitsplitsplit_crit_edge: |
| ; CHECK-NEXT: [[TMP7:%.*]] = shl i32 [[VAL]], 1 |
| ; CHECK-NEXT: [[TMP8:%.*]] = mul i32 [[VAL1]], [[VAL2]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = shl i32 [[TMP8]], 1 |
| ; CHECK-NEXT: [[TMP10:%.*]] = sub i32 [[TMP7]], [[TMP9]] |
| ; CHECK-NEXT: [[TMP11:%.*]] = shl i32 [[VAL5]], 1 |
| ; CHECK-NEXT: [[TMP12:%.*]] = sub i32 [[TMP10]], [[TMP11]] |
| ; CHECK-NEXT: [[TMP13:%.*]] = add i32 [[TMP12]], [[LSR_IV1]] |
| ; CHECK-NEXT: br label [[BB15SPLITSPLITSPLITSPLIT]] |
| ; CHECK: bb15splitsplitsplitsplit: |
| ; CHECK-NEXT: [[VAL16_PH_PH_PH_PH:%.*]] = phi i32 [ [[TMP13]], [[BB17_BB15SPLITSPLITSPLITSPLIT_CRIT_EDGE:%.*]] ], [ [[VAL16_PH_PH_PH_PH_PH]], [[BB15SPLITSPLITSPLITSPLITSPLIT]] ] |
| ; CHECK-NEXT: br label [[BB15SPLITSPLITSPLIT:%.*]] |
| ; CHECK: bb20.bb15splitsplitsplit_crit_edge: |
| ; CHECK-NEXT: [[TMP14:%.*]] = mul i32 [[VAL]], 3 |
| ; CHECK-NEXT: [[TMP15:%.*]] = mul i32 [[VAL1]], [[VAL2]] |
| ; CHECK-NEXT: [[TMP16:%.*]] = mul i32 [[TMP15]], 3 |
| ; CHECK-NEXT: [[TMP17:%.*]] = sub i32 [[TMP14]], [[TMP16]] |
| ; CHECK-NEXT: [[TMP18:%.*]] = mul i32 [[VAL5]], 3 |
| ; CHECK-NEXT: [[TMP19:%.*]] = sub i32 [[TMP17]], [[TMP18]] |
| ; CHECK-NEXT: [[TMP20:%.*]] = add i32 [[TMP19]], [[LSR_IV1]] |
| ; CHECK-NEXT: br label [[BB15SPLITSPLITSPLIT]] |
| ; CHECK: bb15splitsplitsplit: |
| ; CHECK-NEXT: [[VAL16_PH_PH_PH:%.*]] = phi i32 [ [[TMP20]], [[BB20_BB15SPLITSPLITSPLIT_CRIT_EDGE:%.*]] ], [ [[VAL16_PH_PH_PH_PH]], [[BB15SPLITSPLITSPLITSPLIT]] ] |
| ; CHECK-NEXT: br label [[BB15SPLITSPLIT:%.*]] |
| ; CHECK: bb23.bb15splitsplit_crit_edge: |
| ; CHECK-NEXT: [[TMP21:%.*]] = shl i32 [[VAL]], 2 |
| ; CHECK-NEXT: [[TMP22:%.*]] = mul i32 [[VAL1]], [[VAL2]] |
| ; CHECK-NEXT: [[TMP23:%.*]] = shl i32 [[TMP22]], 2 |
| ; CHECK-NEXT: [[TMP24:%.*]] = sub i32 [[TMP21]], [[TMP23]] |
| ; CHECK-NEXT: [[TMP25:%.*]] = shl i32 [[VAL5]], 2 |
| ; CHECK-NEXT: [[TMP26:%.*]] = sub i32 [[TMP24]], [[TMP25]] |
| ; CHECK-NEXT: [[TMP27:%.*]] = add i32 [[TMP26]], [[LSR_IV1]] |
| ; CHECK-NEXT: br label [[BB15SPLITSPLIT]] |
| ; CHECK: bb15splitsplit: |
| ; CHECK-NEXT: [[VAL16_PH_PH:%.*]] = phi i32 [ [[TMP27]], [[BB23_BB15SPLITSPLIT_CRIT_EDGE:%.*]] ], [ [[VAL16_PH_PH_PH]], [[BB15SPLITSPLITSPLIT]] ] |
| ; CHECK-NEXT: br label [[BB15SPLIT:%.*]] |
| ; CHECK: bb26.bb15split_crit_edge: |
| ; CHECK-NEXT: [[TMP28:%.*]] = mul i32 [[VAL]], 5 |
| ; CHECK-NEXT: [[TMP29:%.*]] = mul i32 [[VAL1]], [[VAL2]] |
| ; CHECK-NEXT: [[TMP30:%.*]] = mul i32 [[TMP29]], 5 |
| ; CHECK-NEXT: [[TMP31:%.*]] = sub i32 [[TMP28]], [[TMP30]] |
| ; CHECK-NEXT: [[TMP32:%.*]] = mul i32 [[VAL5]], 5 |
| ; CHECK-NEXT: [[TMP33:%.*]] = sub i32 [[TMP31]], [[TMP32]] |
| ; CHECK-NEXT: [[TMP34:%.*]] = add i32 [[TMP33]], [[LSR_IV1]] |
| ; CHECK-NEXT: br label [[BB15SPLIT]] |
| ; CHECK: bb15split: |
| ; CHECK-NEXT: [[VAL16_PH:%.*]] = phi i32 [ [[TMP34]], [[BB26_BB15SPLIT_CRIT_EDGE:%.*]] ], [ [[VAL16_PH_PH]], [[BB15SPLITSPLIT]] ] |
| ; CHECK-NEXT: br label [[BB15:%.*]] |
| ; CHECK: bb29.bb15_crit_edge: |
| ; CHECK-NEXT: [[TMP35:%.*]] = mul i32 [[VAL]], 6 |
| ; CHECK-NEXT: [[TMP36:%.*]] = mul i32 [[VAL1]], [[VAL2]] |
| ; CHECK-NEXT: [[TMP37:%.*]] = mul i32 [[TMP36]], 6 |
| ; CHECK-NEXT: [[TMP38:%.*]] = sub i32 [[TMP35]], [[TMP37]] |
| ; CHECK-NEXT: [[TMP39:%.*]] = mul i32 [[VAL5]], 6 |
| ; CHECK-NEXT: [[TMP40:%.*]] = sub i32 [[TMP38]], [[TMP39]] |
| ; CHECK-NEXT: [[TMP41:%.*]] = add i32 [[TMP40]], [[LSR_IV1]] |
| ; CHECK-NEXT: br label [[BB15]] |
| ; CHECK: bb15: |
| ; CHECK-NEXT: [[VAL16:%.*]] = phi i32 [ [[TMP41]], [[BB29_BB15_CRIT_EDGE:%.*]] ], [ [[VAL16_PH]], [[BB15SPLIT]] ] |
| ; CHECK-NEXT: call void @widget() [ "deopt"(i32 [[VAL16]], i32 3, i32 [[VAL]]) ] |
| ; CHECK-NEXT: unreachable |
| ; CHECK: bb17: |
| ; CHECK-NEXT: [[VAL19:%.*]] = icmp slt i32 undef, undef |
| ; CHECK-NEXT: br i1 [[VAL19]], label [[BB20:%.*]], label [[BB17_BB15SPLITSPLITSPLITSPLIT_CRIT_EDGE]] |
| ; CHECK: bb20: |
| ; CHECK-NEXT: [[VAL22:%.*]] = icmp slt i32 undef, undef |
| ; CHECK-NEXT: br i1 [[VAL22]], label [[BB23:%.*]], label [[BB20_BB15SPLITSPLITSPLIT_CRIT_EDGE]] |
| ; CHECK: bb23: |
| ; CHECK-NEXT: [[VAL25:%.*]] = icmp slt i32 undef, undef |
| ; CHECK-NEXT: br i1 [[VAL25]], label [[BB26:%.*]], label [[BB23_BB15SPLITSPLIT_CRIT_EDGE]] |
| ; CHECK: bb26: |
| ; CHECK-NEXT: [[VAL28:%.*]] = icmp slt i32 undef, undef |
| ; CHECK-NEXT: br i1 [[VAL28]], label [[BB29:%.*]], label [[BB26_BB15SPLIT_CRIT_EDGE]] |
| ; CHECK: bb29: |
| ; CHECK-NEXT: [[VAL31:%.*]] = icmp slt i32 undef, undef |
| ; CHECK-NEXT: br i1 [[VAL31]], label [[BB32]], label [[BB29_BB15_CRIT_EDGE]] |
| ; CHECK: bb32: |
| ; CHECK-NEXT: [[TMP42:%.*]] = add i32 [[TMP4]], [[LSR_IV1]] |
| ; CHECK-NEXT: [[VAL35]] = add i32 [[TMP42]], [[VAL6]] |
| ; CHECK-NEXT: br i1 false, label [[BB7]], label [[BB15SPLITSPLITSPLITSPLITSPLITSPLIT]] |
| ; |
| bb: |
| %val = load i32, ptr addrspace(3) undef, align 4 |
| %val1 = add i32 undef, 12 |
| %val2 = trunc i64 undef to i32 |
| %val3 = mul i32 %val1, %val2 |
| %val4 = sub i32 %val, %val3 |
| %val5 = ashr i32 undef, undef |
| %val6 = sub i32 %val4, %val5 |
| br label %bb7 |
| |
| bb7: ; preds = %bb32, %bb |
| %val8 = phi i64 [ 0, %bb ], [ %val34, %bb32 ] |
| %val9 = phi i32 [ 0, %bb ], [ %val35, %bb32 ] |
| %val10 = icmp ult i64 %val8, 65536 |
| br i1 %val10, label %bb12, label %bb11 |
| |
| bb11: ; preds = %bb7 |
| unreachable |
| |
| bb12: ; preds = %bb7 |
| %val13 = add i32 %val9, %val6 |
| %val14 = icmp slt i32 undef, undef |
| br i1 %val14, label %bb17, label %bb15 |
| |
| bb15: ; preds = %bb32, %bb29, %bb26, %bb23, %bb20, %bb17, %bb12 |
| %val16 = phi i32 [ %val35, %bb32 ], [ %val30, %bb29 ], [ %val27, %bb26 ], [ %val24, %bb23 ], [ %val21, %bb20 ], [ %val18, %bb17 ], [ %val13, %bb12 ] |
| call void @widget() [ "deopt"(i32 %val16, i32 3, i32 %val) ] |
| unreachable |
| |
| bb17: ; preds = %bb12 |
| %val18 = add i32 %val13, %val6 |
| %val19 = icmp slt i32 undef, undef |
| br i1 %val19, label %bb20, label %bb15 |
| |
| bb20: ; preds = %bb17 |
| %val21 = add i32 %val18, %val6 |
| %val22 = icmp slt i32 undef, undef |
| br i1 %val22, label %bb23, label %bb15 |
| |
| bb23: ; preds = %bb20 |
| %val24 = add i32 %val21, %val6 |
| %val25 = icmp slt i32 undef, undef |
| br i1 %val25, label %bb26, label %bb15 |
| |
| bb26: ; preds = %bb23 |
| %val27 = add i32 %val24, %val6 |
| %val28 = icmp slt i32 undef, undef |
| br i1 %val28, label %bb29, label %bb15 |
| |
| bb29: ; preds = %bb26 |
| %val30 = add i32 %val27, %val6 |
| %val31 = icmp slt i32 undef, undef |
| br i1 %val31, label %bb32, label %bb15 |
| |
| bb32: ; preds = %bb29 |
| %val33 = add i32 %val30, %val6 |
| %val34 = add nuw nsw i64 %val8, 8 |
| %val35 = add i32 %val33, %val6 |
| br i1 false, label %bb7, label %bb15 |
| } |
| |
| ; Test checks that LSR does not hoist increment of %val8 while expanding the other pieces of formula |
| ; to original place in backedge causing incorrect SSA form. |
| define void @test2() { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: bb: |
| ; CHECK-NEXT: [[VAL1:%.*]] = load i32, ptr null, align 4 |
| ; CHECK-NEXT: [[VAL3:%.*]] = load i32, ptr null, align 4 |
| ; CHECK-NEXT: br label [[BB6:%.*]] |
| ; CHECK: bb4: |
| ; CHECK-NEXT: [[VAL5:%.*]] = sext i32 [[VAL16:%.*]] to i64 |
| ; CHECK-NEXT: unreachable |
| ; CHECK: bb6: |
| ; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], [[BB12:%.*]] ], [ -1, [[BB:%.*]] ] |
| ; CHECK-NEXT: [[VAL8:%.*]] = phi i32 [ [[VAL16]], [[BB12]] ], [ [[VAL3]], [[BB]] ] |
| ; CHECK-NEXT: [[LSR_IV_NEXT]] = add nsw i64 [[LSR_IV]], 1 |
| ; CHECK-NEXT: [[VAL10:%.*]] = icmp ult i64 [[LSR_IV_NEXT]], 1048576 |
| ; CHECK-NEXT: br i1 [[VAL10]], label [[BB12]], label [[BB11:%.*]] |
| ; CHECK: bb11: |
| ; CHECK-NEXT: unreachable |
| ; CHECK: bb12: |
| ; CHECK-NEXT: [[VAL14:%.*]] = add i32 [[VAL8]], [[VAL1]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[VAL1]], [[VAL8]] |
| ; CHECK-NEXT: [[VAL15:%.*]] = select i1 false, i32 [[VAL14]], i32 [[VAL8]] |
| ; CHECK-NEXT: [[VAL16]] = add i32 [[TMP0]], 1 |
| ; CHECK-NEXT: [[VAL17:%.*]] = fcmp olt double 0.000000e+00, 2.270000e+02 |
| ; CHECK-NEXT: br i1 [[VAL17]], label [[BB6]], label [[BB4:%.*]] |
| ; |
| bb: |
| %val1 = load i32, ptr null, align 4 |
| %val3 = load i32, ptr null, align 4 |
| br label %bb6 |
| |
| bb4: ; preds = %bb12 |
| %val5 = sext i32 %val16 to i64 |
| unreachable |
| |
| bb6: ; preds = %bb12, %bb |
| %val7 = phi i64 [ %val9, %bb12 ], [ 0, %bb ] |
| %val8 = phi i32 [ %val16, %bb12 ], [ %val3, %bb ] |
| %val9 = add nuw nsw i64 %val7, 1 |
| %val10 = icmp ult i64 %val7, 1048576 |
| br i1 %val10, label %bb12, label %bb11 |
| |
| bb11: ; preds = %bb6 |
| unreachable |
| |
| bb12: ; preds = %bb6 |
| %val13 = select i1 false, i32 0, i32 %val8 |
| %val14 = add i32 %val8, %val1 |
| %val15 = select i1 false, i32 %val14, i32 %val13 |
| %val16 = add i32 %val14, 1 |
| %val17 = fcmp olt double 0.000000e+00, 2.270000e+02 |
| br i1 %val17, label %bb6, label %bb4 |
| } |
| |
| declare void @widget() |
