280 lines
7.7 KiB
LLVM
280 lines
7.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instsimplify -S | FileCheck %s
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define i32 @xor_domcondition(i32 %x, i32 %y) {
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; CHECK-LABEL: @xor_domcondition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%xor = xor i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %xor, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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define i32 @sub_domcondition(i32 %x, i32 %y) {
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; CHECK-LABEL: @sub_domcondition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%sub = sub i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %sub, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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define i32 @udiv_domcondition(i32 %x, i32 %y) {
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; CHECK-LABEL: @udiv_domcondition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: [[COND:%.*]] = phi i32 [ 1, [[COND_TRUE]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i32 [[COND]]
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%udiv = udiv i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %udiv, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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define i32 @sdiv_domcondition(i32 %x, i32 %y) {
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; CHECK-LABEL: @sdiv_domcondition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: [[COND:%.*]] = phi i32 [ 1, [[COND_TRUE]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i32 [[COND]]
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%sdiv = sdiv i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %sdiv, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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define i32 @urem_domcondition(i32 %x, i32 %y) {
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; CHECK-LABEL: @urem_domcondition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%urem = urem i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %urem, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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define i32 @srem_domcondition(i32 %x, i32 %y) {
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; CHECK-LABEL: @srem_domcondition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%srem = srem i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %srem, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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; TODO: %and can be one of %x, %y
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define i32 @and_domcondition(i32 %x, i32 %y) {
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; CHECK-LABEL: @and_domcondition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: [[COND:%.*]] = phi i32 [ [[Y]], [[COND_TRUE]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i32 [[COND]]
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%and = and i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %and, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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; TODO: %or can be one of %x, %y
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define i32 @or_domcondition(i32 %x, i32 %y) {
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; CHECK-LABEL: @or_domcondition(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: [[COND:%.*]] = phi i32 [ [[Y]], [[COND_TRUE]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i32 [[COND]]
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%or = or i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %or, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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; negative test, dominate condtion is not eq
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define i32 @xor_domcondition_negative(i32 %x, i32 %y) {
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; CHECK-LABEL: @xor_domcondition_negative(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp uge i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]]
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: [[COND:%.*]] = phi i32 [ [[XOR]], [[COND_TRUE]] ], [ 0, [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret i32 [[COND]]
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;
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entry:
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%cmp = icmp uge i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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%xor = xor i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %xor, %cond.true ], [ 0, %entry ]
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ret i32 %cond
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}
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define i32 @xor_simplify_by_dci(i32 %x, i32 %y, i1 %c) {
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; CHECK-LABEL: @xor_simplify_by_dci(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_END:%.*]]
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; CHECK: cond.true:
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; CHECK-NEXT: br i1 [[C:%.*]], label [[XORBB:%.*]], label [[COND_END]]
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; CHECK: xorbb:
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; CHECK-NEXT: [[XOR:%.*]] = xor i32 [[X]], [[Y]]
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; CHECK-NEXT: br label [[COND_END]]
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; CHECK: cond.end:
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; CHECK-NEXT: [[COND:%.*]] = phi i32 [ [[XOR]], [[XORBB]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[COND_TRUE]] ]
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; CHECK-NEXT: ret i32 [[COND]]
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;
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entry:
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%cmp = icmp eq i32 %x, %y
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br i1 %cmp, label %cond.true, label %cond.end
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cond.true:
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br i1 %c, label %xorbb, label %cond.end
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xorbb:
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%xor = xor i32 %x, %y
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br label %cond.end
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cond.end:
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%cond = phi i32 [ %xor, %xorbb ], [ 0, %entry ], [0, %cond.true]
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ret i32 %cond
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}
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define void @icmp_simplify_by_dci(i32 %a, i32 %b, i1 %x) {
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; CHECK-LABEL: @icmp_simplify_by_dci(
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; CHECK-NEXT: [[CMP1:%.*]] = icmp eq i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[CMP1]], label [[END:%.*]], label [[TAKEN:%.*]]
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; CHECK: taken:
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; CHECK-NEXT: br i1 [[X:%.*]], label [[SELBB:%.*]], label [[END]]
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; CHECK: selbb:
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; CHECK-NEXT: [[CMP2:%.*]] = icmp ne i32 [[A]], [[B]]
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; CHECK-NEXT: [[C:%.*]] = select i1 [[CMP2]], i32 20, i32 0
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; CHECK-NEXT: call void @foo(i32 [[C]])
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; CHECK-NEXT: br label [[END]]
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; CHECK: end:
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; CHECK-NEXT: ret void
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;
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%cmp1 = icmp eq i32 %a, %b
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br i1 %cmp1, label %end, label %taken
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taken:
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br i1 %x, label %selbb, label %end
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selbb:
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%cmp2 = icmp ne i32 %a, %b
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%c = select i1 %cmp2, i32 20, i32 0
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call void @foo(i32 %c)
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br label %end
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end:
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ret void
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}
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declare void @foo(i32)
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