derek.holloway
7502bf64a4
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102 lines
8.3 KiB
C++
102 lines
8.3 KiB
C++
// Pattern related max size tests: 1, 1024, 4096
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=pattern -ftrivial-auto-var-init-max-size=1 %s -emit-llvm -o - | FileCheck -check-prefix=PATTERN-COMMON -check-prefix=PATTERN-MAX-1 %s
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=pattern -ftrivial-auto-var-init-max-size=1024 %s -emit-llvm -o - | FileCheck -check-prefix=PATTERN-COMMON -check-prefix=PATTERN-MAX-1024 %s
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=pattern -ftrivial-auto-var-init-max-size=4096 %s -emit-llvm -o - | FileCheck -check-prefix=PATTERN-COMMON -check-prefix=PATTERN-MAX-4096 %s
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//
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// Zero related max size tests: 1, 1024, 4096
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=zero -ftrivial-auto-var-init-max-size=1 %s -emit-llvm -o - | FileCheck -check-prefix=ZERO-COMMON -check-prefix=ZERO-MAX-1 %s
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=zero -ftrivial-auto-var-init-max-size=1024 %s -emit-llvm -o - | FileCheck -check-prefix=ZERO-COMMON -check-prefix=ZERO-MAX-1024 %s
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -ftrivial-auto-var-init=zero -ftrivial-auto-var-init-max-size=4096 %s -emit-llvm -o - | FileCheck -check-prefix=ZERO-COMMON -check-prefix=ZERO-MAX-4096 %s
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struct Foo {
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int x; // we should try to make sure X is initialized.
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char buff[1024]; // this one is fine to skip
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};
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int foo(unsigned n) {
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bool var_size_1;
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long var_size_8_init = 123;
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long var_size_8_noinit;
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long var_size_8_init_later;
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void *var_size_8p;
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int var_size_1024[256];
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Foo var_size_1028;
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int var_size_4096[1024];
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// VLA, non-constant size
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int var_vla[n];
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// builtin, non-constant size
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var_size_8p = __builtin_alloca(sizeof(unsigned long long) * n);
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var_size_8_init_later = 456;
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// There are 10 variables: var_size_1, var_size_8_init, var_size_8_noinit,
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// var_size_8_init_later, var_size_8p, var_size_1024,
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// var_size_1028, var_size_4096, var_vla, and a builtin anonymous var ("%5").
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// - Doesn't need auto-init: var_size_8_init
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// - COMMON (auto-init regardless of the max size): "var_vla", and "%5"
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// - Max size 1: "var_size_1"
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// - Max size 1024: "var_size_1", "var_size_8_noinit", "var_size_8_init_later", "var_size_8p", "var_size_1024"
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// - Max size 4096: "var_size_1", "var_size_8_noinit", "var_size_8_init_later", "var_size_8p", "var_size_1024",
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// "var_size_1028", "var_size_4096"
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//
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// PATTERN-MAX-1: store i8 -86, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1-NEXT: store i64 123, ptr %var_size_8_init, align 8
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// PATTERN-MAX-1-NOT: store i64 -6148914691236517206, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1-NOT: store i64 -6148914691236517206, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1-NOT: store ptr inttoptr (i64 -6148914691236517206 to ptr), ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 -86, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 -86, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 -86, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1024: store i8 -86, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1024-NEXT: store i64 123, ptr %var_size_8_init, align 8
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// PATTERN-MAX-1024: store i64 -6148914691236517206, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1024: store i64 -6148914691236517206, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1024: store ptr inttoptr (i64 -6148914691236517206 to ptr), ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1024: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 -86, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1024-NOT: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 -86, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-1024-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 -86, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-4096: store i8 -86, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-4096-NEXT: store i64 123, ptr %var_size_8_init, align 8
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// PATTERN-MAX-4096: store i64 -6148914691236517206, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-4096: store i64 -6148914691236517206, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-4096: store ptr inttoptr (i64 -6148914691236517206 to ptr), ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-4096: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 -86, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-4096: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 -86, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-MAX-4096: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 -86, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-COMMON: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %vla.cur, ptr align 4 @__const._Z3fooj.var_vla, i64 4, i1 false), !annotation [[AUTO_INIT:!.+]]
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// PATTERN-COMMON: call void @llvm.memset.p0.i64(ptr align 16 %5, i8 -86, i64 %mul, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1: store i8 0, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1-NEXT: store i64 123, ptr %var_size_8_init, align 8
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// ZERO-MAX-1-NOT: store i64 0, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1-NOT: store i64 0, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1-NOT: store ptr null, ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 0, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 0, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 0, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1024: store i8 0, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1024-NEXT: store i64 123, ptr %var_size_8_init, align 8
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// ZERO-MAX-1024: store i64 0, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1024: store i64 0, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1024: store ptr null, ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1024: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 0, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1024-NOT: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 0, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-1024-NOT: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 0, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-4096: store i8 0, ptr %var_size_1, align 1, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-4096-NEXT: store i64 123, ptr %var_size_8_init, align 8
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// ZERO-MAX-4096: store i64 0, ptr %var_size_8_noinit, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-4096: store i64 0, ptr %var_size_8_init_later, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-4096: store ptr null, ptr %var_size_8p, align 8, !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-4096: call void @llvm.memset.p0.i64(ptr align 16 %var_size_1024, i8 0, i64 1024, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-4096: call void @llvm.memset.p0.i64(ptr align 4 %var_size_1028, i8 0, i64 1028, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-MAX-4096: call void @llvm.memset.p0.i64(ptr align 16 %var_size_4096, i8 0, i64 4096, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-COMMON: call void @llvm.memset.p0.i64(ptr align 16 %vla, i8 0, i64 %3, i1 false), !annotation [[AUTO_INIT:!.+]]
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// ZERO-COMMON: call void @llvm.memset.p0.i64(ptr align 16 %5, i8 0, i64 %mul, i1 false), !annotation [[AUTO_INIT:!.+]]
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return 0;
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}
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