b3d99ac2cd
Use the DataLayout-aware TargetFolder instead of ConstantFolder in Clang's CGBuilder. The primary impact of this change is that GEP constant expressions are now emitted in canonical `getelementptr i8` form. This is in preparation for the migration to ptradd, which requires this form. Part of the test updates were performed by Claude Code and reviewed by me.
218 lines
5.3 KiB
C
218 lines
5.3 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fms-extensions -emit-llvm < %s | FileCheck %s
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// -------------
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// Scalar integer
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// -------------
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__unaligned int x;
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void test1(void) {
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// CHECK: {{%.*}} = load i32, ptr @x, align 1
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// CHECK: store i32 {{%.*}}, ptr @x, align 1
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x++;
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}
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void test2(void) {
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// CHECK: %y = alloca i32, align 1
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// CHECK: {{%.*}} = load i32, ptr %y, align 1
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// CHECK: store i32 {{%.*}}, ptr %y, align 1
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__unaligned int y;
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y++;
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}
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void test2_1(void) {
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// CHECK: %y = alloca i32, align 1
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// CHECK: store i32 1, ptr %y, align 1
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__unaligned int y = 1;
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}
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// -------------
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// Global pointer
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// -------------
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int *__unaligned p1;
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void test3(void) {
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// CHECK: {{%.*}} = load ptr, ptr @p1, align 1
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 4
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 4
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(*p1)++;
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}
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int __unaligned *p2;
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void test4(void) {
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// CHECK: {{%.*}} = load ptr, ptr @p2, align 8
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 1
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 1
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(*p2)++;
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}
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int __unaligned *__unaligned p3;
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void test5(void) {
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// CHECK: {{%.*}} = load ptr, ptr @p3, align 1
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 1
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 1
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(*p3)++;
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}
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// -------------
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// Local pointer
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// -------------
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void test6(void) {
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// CHECK: %lp1 = alloca ptr, align 1
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// CHECK: {{%.*}} = load ptr, ptr %lp1, align 1
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 4
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 4
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int *__unaligned lp1;
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(*lp1)++;
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}
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void test7(void) {
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// CHECK: %lp2 = alloca ptr, align 8
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// CHECK: {{%.*}} = load ptr, ptr %lp2, align 8
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 1
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 1
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int __unaligned *lp2;
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(*lp2)++;
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}
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void test8(void) {
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// CHECK: %lp3 = alloca ptr, align 1
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// CHECK: {{%.*}} = load ptr, ptr %lp3, align 1
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 1
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 1
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int __unaligned *__unaligned lp3;
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(*lp3)++;
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}
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// -------------
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// Global array
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// -------------
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__unaligned int a[10];
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void test9(void) {
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// CHECK: {{%.*}} = load i32, ptr getelementptr inbounds nuw (i8, ptr @a, i64 12), align 1
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// CHECK: store i32 {{%.*}}, ptr getelementptr inbounds nuw (i8, ptr @a, i64 12), align 1
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(a[3])++;
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}
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// -------------
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// Local array
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// -------------
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void test10(void) {
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// CHECK: %la = alloca [10 x i32], align 1
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// CHECK: {{%.*}} = getelementptr inbounds [10 x i32], ptr %la, i64 0, i64 3
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 1
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 1
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__unaligned int la[10];
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(la[3])++;
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}
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// --------
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// Typedefs
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// --------
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typedef __unaligned int UnalignedInt;
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void test13(void) {
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// CHECK: %i = alloca i32, align 1
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// CHECK: {{%.*}} = load i32, ptr %i, align 1
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// CHECK: store i32 {{%.*}}, ptr %i, align 1
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UnalignedInt i;
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i++;
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}
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typedef int Aligned;
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typedef __unaligned Aligned UnalignedInt2;
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void test14(void) {
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// CHECK: %i = alloca i32, align 1
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// CHECK: {{%.*}} = load i32, ptr %i, align 1
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// CHECK: store i32 {{%.*}}, ptr %i, align 1
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UnalignedInt2 i;
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i++;
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}
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typedef UnalignedInt UnalignedInt3;
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void test15(void) {
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// CHECK: %i = alloca i32, align 1
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// CHECK: {{%.*}} = load i32, ptr %i, align 1
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// CHECK: store i32 {{%.*}}, ptr %i, align 1
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UnalignedInt3 i;
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i++;
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}
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// -------------
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// Decayed types
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// -------------
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void test16(__unaligned int c[10]) {
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// CHECK: {{%.*}} = alloca ptr, align 8
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// CHECK: store ptr %c, ptr {{%.*}}, align 8
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// CHECK: {{%.*}} = load ptr, ptr {{%.*}}, align 8
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// CHECK: {{%.*}} = getelementptr inbounds i32, ptr {{%.*}}, i64 3
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 1
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 1
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c[3]++;
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}
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// -----------
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// __alignof__
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// -----------
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int test17(void) {
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// CHECK: ret i32 1
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return __alignof__(__unaligned int);
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}
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int test18(void) {
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// CHECK: ret i32 1
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__unaligned int a;
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return __alignof__(a);
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}
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int test19(void) {
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// CHECK: ret i32 1
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__unaligned int a[10];
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return __alignof__(a);
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}
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// -----------
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// structs
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// -----------
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typedef
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struct S1 {
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char c;
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int x;
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} S1;
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__unaligned S1 s1;
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void test20(void) {
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// CHECK: {{%.*}} = load i32, ptr getelementptr inbounds nuw (i8, ptr @s1, i64 4), align 1
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// CHECK: store i32 {{%.*}}, ptr getelementptr inbounds nuw (i8, ptr @s1, i64 4), align 1
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s1.x++;
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}
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void test21(void) {
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// CHECK: {{%.*}} = alloca %struct.S1, align 1
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// CHECK: {{%.*}} = getelementptr inbounds nuw %struct.S1, ptr {{%.*}}, i32 0, i32 1
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 1
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 1
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__unaligned S1 s1_2;
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s1_2.x++;
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}
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typedef
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struct __attribute__((packed)) S2 {
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char c;
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int x;
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} S2;
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__unaligned S2 s2;
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void test22(void) {
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// CHECK: {{%.*}} = load i32, ptr getelementptr inbounds nuw (i8, ptr @s2, i64 1), align 1
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// CHECK: store i32 {{%.*}}, ptr getelementptr inbounds nuw (i8, ptr @s2, i64 1), align 1
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s2.x++;
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}
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void test23(void) {
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// CHECK: {{%.*}} = alloca %struct.S2, align 1
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// CHECK: {{%.*}} = getelementptr inbounds nuw %struct.S2, ptr {{%.*}}, i32 0, i32 1
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// CHECK: {{%.*}} = load i32, ptr {{%.*}}, align 1
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// CHECK: store i32 {{%.*}}, ptr {{%.*}}, align 1
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__unaligned S2 s2_2;
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s2_2.x++;
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}
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