14da287e18
This patch adds a lot of additional tests, focusing on loops and GEP arithmetic. Some of the tests expose existing problems, which will be fixed soon.
74 lines
2.0 KiB
LLVM
74 lines
2.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -constraint-elimination -S %s | FileCheck %s
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define i1 @wrapping_add_unknown_1(i8 %a) {
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; CHECK-LABEL: @wrapping_add_unknown_1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[SUB:%.*]] = add i8 [[A:%.*]], -1
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq i8 [[SUB]], 0
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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entry:
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%sub = add i8 %a, -1
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%cmp = icmp eq i8 %sub, 0
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ret i1 %cmp
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}
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define i1 @wrapping_add_known_1(i8 %a) {
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; CHECK-LABEL: @wrapping_add_known_1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[PRE:%.*]] = icmp eq i8 [[A:%.*]], 1
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; CHECK-NEXT: br i1 [[PRE]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[SUB_1:%.*]] = add i8 [[A]], -1
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; CHECK-NEXT: [[C_1:%.*]] = icmp eq i8 [[SUB_1]], 0
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; CHECK-NEXT: ret i1 [[C_1]]
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; CHECK: else:
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; CHECK-NEXT: [[SUB_2:%.*]] = add i8 [[A]], -1
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; CHECK-NEXT: [[C_2:%.*]] = icmp eq i8 [[SUB_2]], 0
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; CHECK-NEXT: ret i1 [[C_2]]
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;
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entry:
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%pre = icmp eq i8 %a, 1
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br i1 %pre, label %then, label %else
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then:
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%sub.1 = add i8 %a, -1
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%c.1 = icmp eq i8 %sub.1, 0
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ret i1 %c.1
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else:
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%sub.2 = add i8 %a, -1
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%c.2 = icmp eq i8 %sub.2, 0
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ret i1 %c.2
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}
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define i1 @wrapping_add_unknown_2(i8 %a) {
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; CHECK-LABEL: @wrapping_add_unknown_2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[PRE:%.*]] = icmp eq i8 [[A:%.*]], 0
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; CHECK-NEXT: br i1 [[PRE]], label [[THEN:%.*]], label [[ELSE:%.*]]
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; CHECK: then:
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; CHECK-NEXT: [[SUB_1:%.*]] = add i8 [[A]], -1
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; CHECK-NEXT: [[C_1:%.*]] = icmp eq i8 [[SUB_1]], 0
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; CHECK-NEXT: ret i1 [[C_1]]
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; CHECK: else:
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; CHECK-NEXT: [[SUB_2:%.*]] = add i8 [[A]], -1
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; CHECK-NEXT: [[C_2:%.*]] = icmp eq i8 [[SUB_2]], 0
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; CHECK-NEXT: ret i1 [[C_2]]
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;
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entry:
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%pre = icmp eq i8 %a, 0
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br i1 %pre, label %then, label %else
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then:
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%sub.1 = add i8 %a, -1
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%c.1 = icmp eq i8 %sub.1, 0
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ret i1 %c.1
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else:
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%sub.2 = add i8 %a, -1
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%c.2 = icmp eq i8 %sub.2, 0
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ret i1 %c.2
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}
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