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llvm-project/clang/test/CodeGen/const-arithmetic.c

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[OpaquePtrs][Clang] Add -no-opaque-pointers to tests (NFC) This adds -no-opaque-pointers to clang tests whose output will change when opaque pointers are enabled by default. This is intended to be part of the migration approach described in https://discourse.llvm.org/t/enabling-opaque-pointers-by-default/61322/9. The patch has been produced by replacing %clang_cc1 with %clang_cc1 -no-opaque-pointers for tests that fail with opaque pointers enabled. Worth noting that this doesn't cover all tests, there's a remaining ~40 tests not using %clang_cc1 that will need a followup change. Differential Revision: https://reviews.llvm.org/D123115
2022-04-07 18:03:55 +08:00
// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
Evaluate: Fix a subtle bug in the pointer evaluator in which we would do an expression computation in the wrong bit-width, and end up generating a totally bogus array reference (_g0+8589934546). - This showed up on Prolangs/cdecl. llvm-svn: 99042
2010-03-20 13:53:45 +08:00
[test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences For a default visibility external linkage definition, dso_local is set for ELF -fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences. To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition, which sets dso_local for default visibility external linkage definitions. To make this flip smooth and enable future (dso_local as definition default), this patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
2020-12-31 16:27:11 +08:00
// CHECK: @g1 ={{.*}} global [2 x i8*] [i8* getelementptr (i8, i8* getelementptr inbounds ([0 x %struct.anon], [0 x %struct.anon]* @g0, i32 0, i32 0, i32 0), i64 -2), i8* getelementptr (i8, i8* getelementptr inbounds ([0 x %struct.anon], [0 x %struct.anon]* @g0, i32 0, i32 0, i32 0), i64 -46)], align 16
// CHECK: @g2 ={{.*}} global [2 x i8*] [i8* getelementptr (i8, i8* getelementptr inbounds ([0 x %struct.anon], [0 x %struct.anon]* @g0, i32 0, i32 0, i32 0), i64 -2), i8* getelementptr (i8, i8* getelementptr inbounds ([0 x %struct.anon], [0 x %struct.anon]* @g0, i32 0, i32 0, i32 0), i64 -46)], align 16
Evaluate: Fix a subtle bug in the pointer evaluator in which we would do an expression computation in the wrong bit-width, and end up generating a totally bogus array reference (_g0+8589934546). - This showed up on Prolangs/cdecl. llvm-svn: 99042
2010-03-20 13:53:45 +08:00
extern struct { unsigned char a, b; } g0[];
void *g1[] = {g0 + -1, g0 + -23 };
void *g2[] = {g0 - 1, g0 - 23 };