97 lines
2.8 KiB
LLVM
97 lines
2.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -S -passes=correlated-propagation < %s | FileCheck %s
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declare void @use(i1)
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define void @test_icmp_from_implied_cond(i32 %a, i32 %b) {
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; CHECK-LABEL: define void @test_icmp_from_implied_cond(
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; CHECK-SAME: i32 [[A:%.*]], i32 [[B:%.*]]) {
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; CHECK-NEXT: [[A_CMP:%.*]] = icmp ugt i32 [[A]], 32
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; CHECK-NEXT: br i1 [[A_CMP]], label [[END:%.*]], label [[L1:%.*]]
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; CHECK: l1:
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; CHECK-NEXT: [[COND:%.*]] = icmp ult i32 [[B]], [[A]]
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; CHECK-NEXT: br i1 [[COND]], label [[L2:%.*]], label [[END]]
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; CHECK: l2:
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[B_CMP2:%.*]] = icmp samesign ult i32 [[B]], 31
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; CHECK-NEXT: call void @use(i1 [[B_CMP2]])
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; CHECK-NEXT: ret void
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; CHECK: end:
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; CHECK-NEXT: ret void
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;
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%a.cmp = icmp ugt i32 %a, 32
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br i1 %a.cmp, label %end, label %l1
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l1:
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%cond = icmp ult i32 %b, %a
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br i1 %cond, label %l2, label %end
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l2:
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%b.cmp1 = icmp ult i32 %b, 32
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call void @use(i1 %b.cmp1)
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%b.cmp2 = icmp ult i32 %b, 31
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call void @use(i1 %b.cmp2)
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ret void
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end:
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ret void
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}
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define i64 @test_sext_from_implied_cond(i32 %a, i32 %b) {
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; CHECK-LABEL: define range(i64 0, 2147483647) i64 @test_sext_from_implied_cond(
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; CHECK-SAME: i32 [[A:%.*]], i32 [[B:%.*]]) {
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; CHECK-NEXT: [[A_CMP:%.*]] = icmp slt i32 [[A]], 0
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; CHECK-NEXT: br i1 [[A_CMP]], label [[END:%.*]], label [[L1:%.*]]
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; CHECK: l1:
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; CHECK-NEXT: [[COND:%.*]] = icmp ult i32 [[B]], [[A]]
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; CHECK-NEXT: br i1 [[COND]], label [[L2:%.*]], label [[END]]
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; CHECK: l2:
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; CHECK-NEXT: [[SEXT:%.*]] = zext nneg i32 [[B]] to i64
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; CHECK-NEXT: ret i64 [[SEXT]]
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; CHECK: end:
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; CHECK-NEXT: ret i64 0
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;
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%a.cmp = icmp slt i32 %a, 0
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br i1 %a.cmp, label %end, label %l1
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l1:
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%cond = icmp ult i32 %b, %a
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br i1 %cond, label %l2, label %end
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l2:
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%sext = sext i32 %b to i64
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ret i64 %sext
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end:
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ret i64 0
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}
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define void @test_icmp_from_implied_range(i16 %x, i32 %b) {
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; CHECK-LABEL: define void @test_icmp_from_implied_range(
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; CHECK-SAME: i16 [[X:%.*]], i32 [[B:%.*]]) {
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; CHECK-NEXT: [[A:%.*]] = zext i16 [[X]] to i32
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; CHECK-NEXT: [[COND:%.*]] = icmp ult i32 [[B]], [[A]]
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; CHECK-NEXT: br i1 [[COND]], label [[L1:%.*]], label [[END:%.*]]
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; CHECK: l1:
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; CHECK-NEXT: call void @use(i1 true)
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; CHECK-NEXT: [[B_CMP2:%.*]] = icmp samesign ult i32 [[B]], 65534
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; CHECK-NEXT: call void @use(i1 [[B_CMP2]])
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; CHECK-NEXT: ret void
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; CHECK: end:
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; CHECK-NEXT: ret void
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;
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%a = zext i16 %x to i32
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%cond = icmp ult i32 %b, %a
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br i1 %cond, label %l1, label %end
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l1:
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%b.cmp1 = icmp ult i32 %b, 65535
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call void @use(i1 %b.cmp1)
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%b.cmp2 = icmp ult i32 %b, 65534
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call void @use(i1 %b.cmp2)
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ret void
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end:
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ret void
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}
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