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llvm / llvm-project / llvm / 0410e9c75c4b25d71c9794f8cb51d60642ea8123 / . / test / Transforms / JumpThreading / select-unfold-freeze.ll
blob: 12288fc272627309ed7ba62bc007e9caafa43fb8 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -jump-threading-freeze-select-cond -jump-threading < %s | FileCheck %s
declare void @foo()
declare void @bar()
declare void @baz()
declare void @quux()
define void @test_switch_cmp(i1 %cond, i32 %val, i8 %value) nounwind {
; CHECK-LABEL: @test_switch_cmp(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[L0:%.*]], label [[L0_THREAD:%.*]]
; CHECK: L0:
; CHECK-NEXT: [[VAL_PHI:%.*]] = phi i32 [ [[VAL:%.*]], [[ENTRY:%.*]] ]
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[VAL_PHI]], 0
; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[CMP]]
; CHECK-NEXT: br i1 [[COND_FR]], label [[L1:%.*]], label [[TMP0:%.*]]
; CHECK: 0:
; CHECK-NEXT: [[TMP1:%.*]] = phi i8 [ [[VALUE:%.*]], [[L0]] ]
; CHECK-NEXT: switch i8 [[TMP1]], label [[L3:%.*]] [
; CHECK-NEXT: i8 1, label [[L1]]
; CHECK-NEXT: i8 2, label [[L2:%.*]]
; CHECK-NEXT: ]
; CHECK: L1:
; CHECK-NEXT: call void @foo()
; CHECK-NEXT: ret void
; CHECK: L2:
; CHECK-NEXT: call void @bar()
; CHECK-NEXT: ret void
; CHECK: L3:
; CHECK-NEXT: call void @baz()
; CHECK-NEXT: ret void
; CHECK: L0.thread:
; CHECK-NEXT: call void @quux()
; CHECK-NEXT: br label [[L1]]
;
entry:
br i1 %cond, label %L0, label %L4
L0:
%val.phi = phi i32 [%val, %entry], [-1, %L4]
%cmp = icmp slt i32 %val.phi, 0
%expr = select i1 %cmp, i8 1, i8 %value
switch i8 %expr, label %L3 [i8 1, label %L1 i8 2, label %L2]
L1:
call void @foo()
ret void
L2:
call void @bar()
ret void
L3:
call void @baz()
ret void
L4:
call void @quux()
br label %L0
}
define i32 @unfold3(i32 %u, i32 %v, i32 %w, i32 %x, i32 %y, i32 %z, i32 %j) nounwind {
; CHECK-LABEL: @unfold3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 [[J:%.*]], 2
; CHECK-NEXT: [[CMP_I:%.*]] = icmp slt i32 [[U:%.*]], [[V:%.*]]
; CHECK-NEXT: br i1 [[CMP_I]], label [[DOTEXIT_THREAD4:%.*]], label [[COND_FALSE_I:%.*]]
; CHECK: cond.false.i:
; CHECK-NEXT: [[CMP4_I:%.*]] = icmp sgt i32 [[U]], [[V]]
; CHECK-NEXT: br i1 [[CMP4_I]], label [[DOTEXIT_THREAD:%.*]], label [[COND_FALSE_6_I:%.*]]
; CHECK: cond.false.6.i:
; CHECK-NEXT: [[CMP8_I:%.*]] = icmp slt i32 [[W:%.*]], [[X:%.*]]
; CHECK-NEXT: br i1 [[CMP8_I]], label [[DOTEXIT_THREAD4]], label [[COND_FALSE_10_I:%.*]]
; CHECK: cond.false.10.i:
; CHECK-NEXT: [[CMP13_I:%.*]] = icmp sgt i32 [[W]], [[X]]
; CHECK-NEXT: br i1 [[CMP13_I]], label [[DOTEXIT_THREAD]], label [[DOTEXIT:%.*]]
; CHECK: .exit:
; CHECK-NEXT: [[PHITMP:%.*]] = icmp sge i32 [[Y:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[PHITMP]]
; CHECK-NEXT: br i1 [[COND_FR]], label [[DOTEXIT_THREAD]], label [[DOTEXIT_THREAD4]]
; CHECK: .exit.thread:
; CHECK-NEXT: br label [[DOTEXIT_THREAD4]]
; CHECK: .exit.thread4:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ [[J]], [[DOTEXIT_THREAD]] ], [ [[ADD3]], [[DOTEXIT]] ], [ [[ADD3]], [[ENTRY:%.*]] ], [ [[ADD3]], [[COND_FALSE_6_I]] ]
; CHECK-NEXT: ret i32 [[TMP0]]
;
entry:
%add3 = add nsw i32 %j, 2
%cmp.i = icmp slt i32 %u, %v
br i1 %cmp.i, label %.exit, label %cond.false.i
cond.false.i: ; preds = %entry
%cmp4.i = icmp sgt i32 %u, %v
br i1 %cmp4.i, label %.exit, label %cond.false.6.i
cond.false.6.i: ; preds = %cond.false.i
%cmp8.i = icmp slt i32 %w, %x
br i1 %cmp8.i, label %.exit, label %cond.false.10.i
cond.false.10.i: ; preds = %cond.false.6.i
%cmp13.i = icmp sgt i32 %w, %x
br i1 %cmp13.i, label %.exit, label %cond.false.15.i
cond.false.15.i: ; preds = %cond.false.10.i
%phitmp = icmp sge i32 %y, %z
br label %.exit
.exit: ; preds = %entry, %cond.false.i, %cond.false.6.i, %cond.false.10.i, %cond.false.15.i
%cond23.i = phi i1 [ false, %entry ], [ true, %cond.false.i ], [ false, %cond.false.6.i ], [ %phitmp, %cond.false.15.i ], [ true, %cond.false.10.i ]
%j.add3 = select i1 %cond23.i, i32 %j, i32 %add3
ret i32 %j.add3
}
define i32 @unfold4(i32 %u, i32 %v, i32 %w, i32 %x, i32 %y, i32 %z, i32 %j) nounwind {
; CHECK-LABEL: @unfold4(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 [[J:%.*]], 2
; CHECK-NEXT: [[CMP_I:%.*]] = icmp slt i32 [[U:%.*]], [[V:%.*]]
; CHECK-NEXT: br i1 [[CMP_I]], label [[DOTEXIT_THREAD:%.*]], label [[COND_FALSE_I:%.*]]
; CHECK: cond.false.i:
; CHECK-NEXT: [[CMP4_I:%.*]] = icmp sgt i32 [[U]], [[V]]
; CHECK-NEXT: br i1 [[CMP4_I]], label [[DOTEXIT_THREAD5:%.*]], label [[COND_FALSE_6_I:%.*]]
; CHECK: cond.false.6.i:
; CHECK-NEXT: [[CMP8_I:%.*]] = icmp slt i32 [[W:%.*]], [[X:%.*]]
; CHECK-NEXT: br i1 [[CMP8_I]], label [[DOTEXIT_THREAD]], label [[COND_FALSE_10_I:%.*]]
; CHECK: cond.false.10.i:
; CHECK-NEXT: [[CMP13_I:%.*]] = icmp sgt i32 [[W]], [[X]]
; CHECK-NEXT: br i1 [[CMP13_I]], label [[DOTEXIT_THREAD5]], label [[DOTEXIT:%.*]]
; CHECK: .exit:
; CHECK-NEXT: [[CMP19_I:%.*]] = icmp sge i32 [[Y:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP19_I]] to i32
; CHECK-NEXT: [[LNOT_I18:%.*]] = icmp eq i32 [[CONV]], 1
; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[LNOT_I18]]
; CHECK-NEXT: br i1 [[COND_FR]], label [[DOTEXIT_THREAD]], label [[DOTEXIT_THREAD5]]
; CHECK: .exit.thread:
; CHECK-NEXT: br label [[DOTEXIT_THREAD5]]
; CHECK: .exit.thread5:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ [[J]], [[DOTEXIT_THREAD]] ], [ [[ADD3]], [[DOTEXIT]] ], [ [[ADD3]], [[COND_FALSE_I]] ], [ [[ADD3]], [[COND_FALSE_10_I]] ]
; CHECK-NEXT: ret i32 [[TMP0]]
;
entry:
%add3 = add nsw i32 %j, 2
%cmp.i = icmp slt i32 %u, %v
br i1 %cmp.i, label %.exit, label %cond.false.i
cond.false.i: ; preds = %entry
%cmp4.i = icmp sgt i32 %u, %v
br i1 %cmp4.i, label %.exit, label %cond.false.6.i
cond.false.6.i: ; preds = %cond.false.i
%cmp8.i = icmp slt i32 %w, %x
br i1 %cmp8.i, label %.exit, label %cond.false.10.i
cond.false.10.i: ; preds = %cond.false.6.i
%cmp13.i = icmp sgt i32 %w, %x
br i1 %cmp13.i, label %.exit, label %cond.false.15.i
cond.false.15.i: ; preds = %cond.false.10.i
%cmp19.i = icmp sge i32 %y, %z
%conv = zext i1 %cmp19.i to i32
br label %.exit
.exit: ; preds = %entry, %cond.false.i, %cond.false.6.i, %cond.false.10.i, %cond.false.15.i
%cond23.i = phi i32 [ 1, %entry ], [ 0, %cond.false.i ], [ 1, %cond.false.6.i ], [ %conv, %cond.false.15.i ], [ 0, %cond.false.10.i ]
%lnot.i18 = icmp eq i32 %cond23.i, 1
%j.add3 = select i1 %lnot.i18, i32 %j, i32 %add3
ret i32 %j.add3
}
; TODO: cond23_i should be constant-folded.
define i32 @unfold5(i32 %u, i32 %v, i32 %w, i32 %x, i32 %y, i32 %z, i32 %j) nounwind {
; CHECK-LABEL: @unfold5(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ADD3:%.*]] = add nsw i32 [[J:%.*]], 2
; CHECK-NEXT: [[CMP_I:%.*]] = icmp slt i32 [[U:%.*]], [[V:%.*]]
; CHECK-NEXT: br i1 [[CMP_I]], label [[DOTEXIT_THREAD:%.*]], label [[COND_FALSE_I:%.*]]
; CHECK: cond.false.i:
; CHECK-NEXT: [[CMP4_I:%.*]] = icmp sgt i32 [[U]], [[V]]
; CHECK-NEXT: br i1 [[CMP4_I]], label [[DOTEXIT_THREAD]], label [[COND_FALSE_6_I:%.*]]
; CHECK: cond.false.6.i:
; CHECK-NEXT: [[CMP8_I:%.*]] = icmp slt i32 [[W:%.*]], [[X:%.*]]
; CHECK-NEXT: br i1 [[CMP8_I]], label [[DOTEXIT_THREAD]], label [[COND_FALSE_10_I:%.*]]
; CHECK: cond.false.10.i:
; CHECK-NEXT: [[CMP13_I:%.*]] = icmp sgt i32 [[W]], [[X]]
; CHECK-NEXT: br i1 [[CMP13_I]], label [[TMP0:%.*]], label [[COND_FALSE_15_I:%.*]]
; CHECK: cond.false.15.i:
; CHECK-NEXT: [[CMP19_I:%.*]] = icmp sge i32 [[Y:%.*]], [[Z:%.*]]
; CHECK-NEXT: [[CONV:%.*]] = zext i1 [[CMP19_I]] to i32
; CHECK-NEXT: br label [[DOTEXIT_THREAD]]
; CHECK: 0:
; CHECK-NEXT: [[COND23_I:%.*]] = phi i32 [ 7, [[COND_FALSE_10_I]] ]
; CHECK-NEXT: [[LNOT_I18:%.*]] = icmp sgt i32 [[COND23_I]], 5
; CHECK-NEXT: br label [[DOTEXIT_THREAD]]
; CHECK: .exit.thread:
; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[J]], [[TMP0]] ], [ [[CONV]], [[COND_FALSE_15_I]] ], [ 1, [[COND_FALSE_6_I]] ], [ 3, [[COND_FALSE_I]] ], [ 2, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i32 [[TMP1]]
;
entry:
%add3 = add nsw i32 %j, 2
%cmp.i = icmp slt i32 %u, %v
br i1 %cmp.i, label %.exit, label %cond.false.i
cond.false.i: ; preds = %entry
%cmp4.i = icmp sgt i32 %u, %v
br i1 %cmp4.i, label %.exit, label %cond.false.6.i
cond.false.6.i: ; preds = %cond.false.i
%cmp8.i = icmp slt i32 %w, %x
br i1 %cmp8.i, label %.exit, label %cond.false.10.i
cond.false.10.i: ; preds = %cond.false.6.i
%cmp13.i = icmp sgt i32 %w, %x
br i1 %cmp13.i, label %.exit, label %cond.false.15.i
cond.false.15.i: ; preds = %cond.false.10.i
%cmp19.i = icmp sge i32 %y, %z
%conv = zext i1 %cmp19.i to i32
br label %.exit
.exit: ; preds = %entry, %cond.false.i, %cond.false.6.i, %cond.false.10.i, %cond.false.15.i
%cond23.i = phi i32 [ 2, %entry ], [ 3, %cond.false.i ], [ 1, %cond.false.6.i ], [ %conv, %cond.false.15.i ], [ 7, %cond.false.10.i ]
%lnot.i18 = icmp sgt i32 %cond23.i, 5
%j.add3 = select i1 %lnot.i18, i32 %j, i32 %cond23.i
ret i32 %j.add3
}
define i32 @TryToUnfoldSelectInCurrBB(i1 %b, i1 %ui, i32 %s, i1 %x) {
; CHECK-LABEL: @TryToUnfoldSelectInCurrBB(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[B:%.*]], label [[IF_END_THREAD:%.*]], label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: [[COND_FR:%.*]] = freeze i1 [[X:%.*]]
; CHECK-NEXT: br i1 [[COND_FR]], label [[TMP0:%.*]], label [[IF_END_THREAD]]
; CHECK: 0:
; CHECK-NEXT: br label [[IF_END_THREAD]]
; CHECK: if.end.thread:
; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[S:%.*]], [[TMP0]] ], [ 42, [[IF_END]] ], [ 42, [[ENTRY:%.*]] ]
; CHECK-NEXT: ret i32 [[TMP1]]
;
entry:
br i1 %b, label %if.end, label %if.else
if.else:
br label %if.end
if.end:
%v = phi i1 [ %x, %if.else ], [ false, %entry ]
%v1 = select i1 %v, i32 %s, i32 42
ret i32 %v1
}