llvm-mirror/test/CodeGen/PowerPC/coal-sections.ll

; RUN: llc -verify-machineinstrs < %s -mtriple powerpc-apple-darwin8 -march=ppc32 | FileCheck %s

; Check that *coal* sections are emitted.

; CHECK: .section  __TEXT,__textcoal_nt,coalesced,pure_instructions
; CHECK: .section  __TEXT,__textcoal_nt,coalesced,pure_instructions
; CHECK-NEXT: .globl  _foo

; CHECK: .section  __TEXT,__const_coal,coalesced
; CHECK-NEXT: .globl  _a

; CHECK: .section  __DATA,__datacoal_nt,coalesced
; CHECK-NEXT: .globl  _b

@a = weak_odr constant [4 x i32] [i32 1, i32 2, i32 3, i32 4], align 16
@b = weak global i32 5, align 4
@g = common global i32* null, align 8

; Function Attrs: nounwind ssp uwtable
define weak i32* @foo() {
entry:
  store i32* getelementptr inbounds ([4 x i32], [4 x i32]* @a, i64 0, i64 0), i32** @g, align 8
  ret i32* @b
}
Adding -verify-machineinstrs option to PowerPC tests Currently we have a number of tests that fail with -verify-machineinstrs. To detect this cases earlier we add the option to the testcases with the exception of tests that will currently fail with this option. PR 27456 keeps track of this failures. No code review, as discussed with Hal Finkel. llvm-svn: 277624 2016-08-03 20:17:35 +02:00			`; RUN: llc -verify-machineinstrs < %s -mtriple powerpc-apple-darwin8 -march=ppc32 \| FileCheck %s`
[MachO] Stop generating coal sections. Recommit r250342: move coal-sections-powerpc.s to subdirectory for powerpc. Some background on why we don't have to use coal sections anymore: Long ago when C++ was new and "weak" had not been standardized, an attempt was made in cctools to support C++ inlines that can be coalesced by putting them into their own section (TEXT/textcoal_nt instead of TEXT/text). The current macho linker supports the weak-def bit on any symbol to allow it to be coalesced, but the compiler still puts weak-def functions/data into alternate section names, which the linker must map back to the base section name. This patch makes changes that are necessary to prevent the compiler from using the "coal" sections and have it use the non-coal sections instead when the target architecture is not powerpc: TEXT/textcoal_nt instead use TEXT/text TEXT/const_coal instead use TEXT/const DATA/datacoal_nt instead use DATA/data If the target is powerpc, we continue to use the coal sections since anyone targeting powerpc is probably using an old linker that doesn't have support for the weak-def bits. Also, have the assembler issue a warning if it encounters a coal section in the assembly file and inform the users to use the non-coal sections instead. rdar://problem/14265330 Differential Revision: http://reviews.llvm.org/D13188 llvm-svn: 250370 2015-10-15 07:28:38 +02:00
			`; Check that coal sections are emitted.`

			`; CHECK: .section __TEXT,__textcoal_nt,coalesced,pure_instructions`
			`; CHECK: .section __TEXT,__textcoal_nt,coalesced,pure_instructions`
			`; CHECK-NEXT: .globl _foo`

			`; CHECK: .section __TEXT,__const_coal,coalesced`
			`; CHECK-NEXT: .globl _a`

			`; CHECK: .section __DATA,__datacoal_nt,coalesced`
			`; CHECK-NEXT: .globl _b`

			`@a = weak_odr constant [4 x i32] [i32 1, i32 2, i32 3, i32 4], align 16`
			`@b = weak global i32 5, align 4`
			`@g = common global i32* null, align 8`

			`; Function Attrs: nounwind ssp uwtable`
			`define weak i32* @foo() {`
			`entry:`
			`store i32* getelementptr inbounds ([4 x i32], [4 x i32]* @a, i64 0, i64 0), i32** @g, align 8`
			`ret i32* @b`
			`}`