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llvm-project/clang/test/CodeGen/2008-07-29-override-alias-d...

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Fix PR8720 by printing an error message with a substring that the gcc testsuite searches for. llvm-svn: 121137
2010-12-07 23:23:23 +08:00
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm -o - %s | FileCheck %s
Change CodeGen of global decls to key off of the name (instead of having multiple bindings from all the possible decls which conceptually map to the same global). - This eliminates CodeGen depending on the LLVM module for name lookup. - This also eliminates the need for ReplaceMapValuesWith (hurrah). - This handles lookups for FunctionDecls correctly in the presence of aliases, this was previously broken. - WIP: Can still clean up & unify variable and function emission. llvm-svn: 54382
2008-08-06 07:31:02 +08:00
Prep for new warning. llvm-svn: 76638
2009-07-22 04:52:43 +08:00
int x() { return 1; }
Change CodeGen of global decls to key off of the name (instead of having multiple bindings from all the possible decls which conceptually map to the same global). - This eliminates CodeGen depending on the LLVM module for name lookup. - This also eliminates the need for ReplaceMapValuesWith (hurrah). - This handles lookups for FunctionDecls correctly in the presence of aliases, this was previously broken. - WIP: Can still clean up & unify variable and function emission. llvm-svn: 54382
2008-08-06 07:31:02 +08:00
Change IR generation for return (in the simple case) to avoid doing silly load/store nonsense in the epilog. For example, for: int foo(int X) { int A[100]; return A[X]; } we used to generate: %arrayidx = getelementptr inbounds [100 x i32]* %A, i32 0, i64 %idxprom ; <i32*> [#uses=1] %tmp1 = load i32* %arrayidx ; <i32> [#uses=1] store i32 %tmp1, i32* %retval %0 = load i32* %retval ; <i32> [#uses=1] ret i32 %0 } which codegen'd to this code: _foo: ## @foo ## BB#0: ## %entry subq $408, %rsp ## imm = 0x198 movl %edi, 400(%rsp) movl 400(%rsp), %edi movslq %edi, %rax movl (%rsp,%rax,4), %edi movl %edi, 404(%rsp) movl 404(%rsp), %eax addq $408, %rsp ## imm = 0x198 ret Now we generate: %arrayidx = getelementptr inbounds [100 x i32]* %A, i32 0, i64 %idxprom ; <i32*> [#uses=1] %tmp1 = load i32* %arrayidx ; <i32> [#uses=1] ret i32 %tmp1 } and: _foo: ## @foo ## BB#0: ## %entry subq $408, %rsp ## imm = 0x198 movl %edi, 404(%rsp) movl 404(%rsp), %edi movslq %edi, %rax movl (%rsp,%rax,4), %eax addq $408, %rsp ## imm = 0x198 ret This actually does matter, cutting out 2000 lines of IR from CGStmt.ll for example. Another interesting effect is that altivec.h functions which are dead now get dce'd by the inliner. Hence all the changes to builtins-ppc-altivec.c to ensure the calls aren't dead. llvm-svn: 106970
2010-06-27 09:06:27 +08:00
// CHECK: ret i32 1
Convert a few tests to FileCheck for PR5307. llvm-svn: 85154
2009-10-27 04:49:20 +08:00
Change CodeGen of global decls to key off of the name (instead of having multiple bindings from all the possible decls which conceptually map to the same global). - This eliminates CodeGen depending on the LLVM module for name lookup. - This also eliminates the need for ReplaceMapValuesWith (hurrah). - This handles lookups for FunctionDecls correctly in the presence of aliases, this was previously broken. - WIP: Can still clean up & unify variable and function emission. llvm-svn: 54382
2008-08-06 07:31:02 +08:00
int f() __attribute__((weak, alias("x")));
/* Test that we link to the alias correctly instead of making a new
forward definition. */
int f();
int h() {
return f();
}
Convert a few tests to FileCheck for PR5307. llvm-svn: 85154
2009-10-27 04:49:20 +08:00
Fix some tests in -Asserts mode. - FileCheck is a *huuuuge* improvement here. - Still feels like we could use a better tool for this though, either teach llvm-dis to spit out the FileCheck syntax, or provide another tool to turn a .ll into a "matchable" input. - Also on my Christmas list is better FileCheck diagnostics with missing variables or mismatches. llvm-svn: 86800
2009-11-11 11:48:26 +08:00
// CHECK: [[call:%.*]] = call i32 (...)* @f()
Change IR generation for return (in the simple case) to avoid doing silly load/store nonsense in the epilog. For example, for: int foo(int X) { int A[100]; return A[X]; } we used to generate: %arrayidx = getelementptr inbounds [100 x i32]* %A, i32 0, i64 %idxprom ; <i32*> [#uses=1] %tmp1 = load i32* %arrayidx ; <i32> [#uses=1] store i32 %tmp1, i32* %retval %0 = load i32* %retval ; <i32> [#uses=1] ret i32 %0 } which codegen'd to this code: _foo: ## @foo ## BB#0: ## %entry subq $408, %rsp ## imm = 0x198 movl %edi, 400(%rsp) movl 400(%rsp), %edi movslq %edi, %rax movl (%rsp,%rax,4), %edi movl %edi, 404(%rsp) movl 404(%rsp), %eax addq $408, %rsp ## imm = 0x198 ret Now we generate: %arrayidx = getelementptr inbounds [100 x i32]* %A, i32 0, i64 %idxprom ; <i32*> [#uses=1] %tmp1 = load i32* %arrayidx ; <i32> [#uses=1] ret i32 %tmp1 } and: _foo: ## @foo ## BB#0: ## %entry subq $408, %rsp ## imm = 0x198 movl %edi, 404(%rsp) movl 404(%rsp), %edi movslq %edi, %rax movl (%rsp,%rax,4), %eax addq $408, %rsp ## imm = 0x198 ret This actually does matter, cutting out 2000 lines of IR from CGStmt.ll for example. Another interesting effect is that altivec.h functions which are dead now get dce'd by the inliner. Hence all the changes to builtins-ppc-altivec.c to ensure the calls aren't dead. llvm-svn: 106970
2010-06-27 09:06:27 +08:00
// CHECK: ret i32 [[call]]
Convert a few tests to FileCheck for PR5307. llvm-svn: 85154
2009-10-27 04:49:20 +08:00