derek.holloway
7502bf64a4
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74 lines
2.2 KiB
LLVM
74 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; Test function specialization wouldn't crash due to constant expression.
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; Note that this test case shows that function specialization pass would
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; transform the function even if no specialization happened.
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; RUN: opt -passes="ipsccp<func-spec>" -force-specialization -funcspec-for-literal-constant=false -S < %s | FileCheck %s
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%struct = type { i8, i16, i32, i64, i64}
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@Global = internal constant %struct {i8 0, i16 1, i32 2, i64 3, i64 4}
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define internal i64 @func2(ptr %x) {
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entry:
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%val = ptrtoint ptr %x to i64
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ret i64 %val
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}
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define internal i64 @func(ptr %x, ptr %binop) {
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; CHECK-LABEL: @func(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: unreachable
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;
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entry:
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%tmp0 = call i64 %binop(ptr %x)
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ret i64 %tmp0
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}
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define internal i64 @zoo(i1 %flag) {
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; CHECK-LABEL: @zoo(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[FLAG:%.*]], label [[PLUS:%.*]], label [[MINUS:%.*]]
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; CHECK: plus:
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; CHECK-NEXT: [[TMP0:%.*]] = call i64 @func2.specialized.2(ptr getelementptr inbounds nuw (i8, ptr @Global, i64 8))
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: minus:
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; CHECK-NEXT: [[TMP1:%.*]] = call i64 @func2.specialized.1(ptr getelementptr inbounds nuw (i8, ptr @Global, i64 16))
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[TMP2:%.*]] = phi i64 [ ptrtoint (ptr getelementptr inbounds nuw (i8, ptr @Global, i64 8) to i64), [[PLUS]] ], [ ptrtoint (ptr getelementptr inbounds nuw (i8, ptr @Global, i64 16) to i64), [[MINUS]] ]
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; CHECK-NEXT: ret i64 [[TMP2]]
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;
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entry:
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br i1 %flag, label %plus, label %minus
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plus:
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%arg = getelementptr %struct, ptr @Global, i32 0, i32 3
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%tmp0 = call i64 @func2(ptr %arg)
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br label %merge
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minus:
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%arg2 = getelementptr %struct, ptr @Global, i32 0, i32 4
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%tmp1 = call i64 @func2(ptr %arg2)
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br label %merge
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merge:
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%tmp2 = phi i64 [ %tmp0, %plus ], [ %tmp1, %minus]
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ret i64 %tmp2
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}
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define i64 @main() {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: [[TMP1:%.*]] = call i64 @zoo(i1 false)
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; CHECK-NEXT: [[TMP2:%.*]] = call i64 @zoo(i1 true)
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; CHECK-NEXT: [[TMP3:%.*]] = add i64 [[TMP1]], [[TMP2]]
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; CHECK-NEXT: ret i64 [[TMP3]]
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;
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%1 = call i64 @zoo(i1 0)
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%2 = call i64 @zoo(i1 1)
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%3 = add i64 %1, %2
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ret i64 %3
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}
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