derek.holloway
7502bf64a4
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63 lines
2.3 KiB
LLVM
63 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt -passes=constraint-elimination -S %s | FileCheck %s
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declare i64 @llvm.uadd.sat.i64(i64, i64)
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declare i64 @llvm.usub.sat.i64(i64, i64)
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define i1 @uadd_sat_uge(i64 noundef %a, i64 noundef %b) {
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; CHECK-LABEL: define i1 @uadd_sat_uge(
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; CHECK-SAME: i64 noundef [[A:%.*]], i64 noundef [[B:%.*]]) {
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; CHECK-NEXT: [[ADD_SAT:%.*]] = call i64 @llvm.uadd.sat.i64(i64 [[A]], i64 [[B]])
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; CHECK-NEXT: [[CMP:%.*]] = and i1 true, true
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%add.sat = call i64 @llvm.uadd.sat.i64(i64 %a, i64 %b)
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%cmp1 = icmp uge i64 %add.sat, %a
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%cmp2 = icmp uge i64 %add.sat, %b
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%cmp = and i1 %cmp1, %cmp2
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ret i1 %cmp
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}
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define i1 @usub_sat_ule_lhs(i64 noundef %a, i64 noundef %b) {
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; CHECK-LABEL: define i1 @usub_sat_ule_lhs(
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; CHECK-SAME: i64 noundef [[A:%.*]], i64 noundef [[B:%.*]]) {
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; CHECK-NEXT: [[SUB_SAT:%.*]] = call i64 @llvm.usub.sat.i64(i64 [[A]], i64 [[B]])
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; CHECK-NEXT: ret i1 true
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;
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%sub.sat = call i64 @llvm.usub.sat.i64(i64 %a, i64 %b)
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%cmp = icmp ule i64 %sub.sat, %a
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ret i1 %cmp
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}
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; Negative test
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define i1 @usub_sat_not_ule_rhs(i64 noundef %a, i64 noundef %b) {
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; CHECK-LABEL: define i1 @usub_sat_not_ule_rhs(
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; CHECK-SAME: i64 noundef [[A:%.*]], i64 noundef [[B:%.*]]) {
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; CHECK-NEXT: [[SUB_SAT:%.*]] = call i64 @llvm.usub.sat.i64(i64 [[A]], i64 [[B]])
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; CHECK-NEXT: [[CMP:%.*]] = icmp ule i64 [[SUB_SAT]], [[B]]
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%sub.sat = call i64 @llvm.usub.sat.i64(i64 %a, i64 %b)
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%cmp = icmp ule i64 %sub.sat, %b
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ret i1 %cmp
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}
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define i1 @pr135603(i64 %conv6, i64 %str.coerce, ptr %conv) {
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; CHECK-LABEL: define i1 @pr135603(
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; CHECK-SAME: i64 [[CONV6:%.*]], i64 [[STR_COERCE:%.*]], ptr [[CONV:%.*]]) {
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; CHECK-NEXT: [[A:%.*]] = load i32, ptr [[CONV]], align 4
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; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[A]], -1
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; CHECK-NEXT: [[CONV2:%.*]] = zext nneg i32 [[A]] to i64
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; CHECK-NEXT: [[ADD:%.*]] = add i64 [[STR_COERCE]], [[CONV6]]
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; CHECK-NEXT: [[SPEC_SELECT:%.*]] = call i64 @llvm.usub.sat.i64(i64 [[CONV2]], i64 [[ADD]])
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%a = load i32, ptr %conv, align 4
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%cmp = icmp sgt i32 %a, -1
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%conv2 = zext nneg i32 %a to i64
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%add = add i64 %str.coerce, %conv6
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%spec.select = call i64 @llvm.usub.sat.i64(i64 %conv2, i64 %add)
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ret i1 %cmp
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}
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