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https://github.com/RPCS3/llvm-mirror.git
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94dff8006e
This reverts commit r323991. This commit breaks target that don't model all the register constraints in TableGen. So far the workaround was to set the hasExtraXXXRegAllocReq, but it proves that it doesn't cover all the cases. For instance, when mutating an instruction (like in the lowering of COPYs) the isRenamable flag is not properly updated. The same problem will happen when attaching machine operand from one instruction to another. Geoff Berry is working on a fix in https://reviews.llvm.org/D43042. llvm-svn: 325421
142 lines
4.2 KiB
LLVM
142 lines
4.2 KiB
LLVM
; RUN: llc -mtriple=x86_64-windows-msvc < %s | FileCheck %s --check-prefix=X64
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; RUN: llc -mtriple=i686-windows-msvc < %s | FileCheck %s --check-prefix=X86
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declare i8* @llvm.frameaddress(i32)
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declare void @llvm.localescape(...)
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declare i8* @llvm.localaddress()
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declare i8* @llvm.localrecover(i8*, i8*, i32)
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declare i32 @printf(i8*, ...)
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@str = internal constant [10 x i8] c"asdf: %d\0A\00"
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define void @print_framealloc_from_fp(i8* %fp) {
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%a.i8 = call i8* @llvm.localrecover(i8* bitcast (void(i32)* @alloc_func to i8*), i8* %fp, i32 0)
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%a = bitcast i8* %a.i8 to i32*
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%a.val = load i32, i32* %a
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call i32 (i8*, ...) @printf(i8* getelementptr ([10 x i8], [10 x i8]* @str, i32 0, i32 0), i32 %a.val)
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%b.i8 = call i8* @llvm.localrecover(i8* bitcast (void(i32)* @alloc_func to i8*), i8* %fp, i32 1)
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%b = bitcast i8* %b.i8 to i32*
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%b.val = load i32, i32* %b
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call i32 (i8*, ...) @printf(i8* getelementptr ([10 x i8], [10 x i8]* @str, i32 0, i32 0), i32 %b.val)
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store i32 42, i32* %b
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%b2 = getelementptr i32, i32* %b, i32 1
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%b2.val = load i32, i32* %b2
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call i32 (i8*, ...) @printf(i8* getelementptr ([10 x i8], [10 x i8]* @str, i32 0, i32 0), i32 %b2.val)
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ret void
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}
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; X64-LABEL: print_framealloc_from_fp:
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; X64: movq %rcx, %[[parent_fp:[a-z]+]]
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; X64: movl .Lalloc_func$frame_escape_0(%[[parent_fp]]), %edx
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; X64: leaq {{.*}}(%rip), %[[str:[a-z]+]]
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; X64: movq %[[str]], %rcx
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; X64: callq printf
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; X64: movl .Lalloc_func$frame_escape_1(%[[parent_fp]]), %edx
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; X64: movq %[[str]], %rcx
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; X64: callq printf
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; X64: movl $42, .Lalloc_func$frame_escape_1(%[[parent_fp]])
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; X64: retq
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; X86-LABEL: print_framealloc_from_fp:
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; X86: pushl %esi
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; X86: movl 8(%esp), %esi
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; X86: pushl Lalloc_func$frame_escape_0(%esi)
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; X86: pushl $_str
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; X86: calll _printf
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; X86: addl $8, %esp
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; X86: pushl Lalloc_func$frame_escape_1(%esi)
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; X86: pushl $_str
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; X86: calll _printf
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; X86: addl $8, %esp
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; X86: movl $42, Lalloc_func$frame_escape_1(%esi)
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; X86: movl $4, %eax
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; X86: pushl Lalloc_func$frame_escape_1(%esi,%eax)
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; X86: pushl $_str
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; X86: calll _printf
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; X86: addl $8, %esp
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; X86: popl %esi
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; X86: retl
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define void @alloc_func(i32 %n) {
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%a = alloca i32
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%b = alloca i32, i32 2
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call void (...) @llvm.localescape(i32* %a, i32* %b)
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store i32 42, i32* %a
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store i32 13, i32* %b
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; Force usage of EBP with a dynamic alloca.
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alloca i8, i32 %n
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%lp = call i8* @llvm.localaddress()
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call void @print_framealloc_from_fp(i8* %lp)
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ret void
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}
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; X64-LABEL: alloc_func:
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; X64: pushq %rbp
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; X64: subq $16, %rsp
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; X64: .seh_stackalloc 16
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; X64: leaq 16(%rsp), %rbp
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; X64: .seh_setframe 5, 16
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; X64: .Lalloc_func$frame_escape_0 = -4
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; X64: .Lalloc_func$frame_escape_1 = -12
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; X64: movl $42, -4(%rbp)
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; X64: movl $13, -12(%rbp)
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; X64: movq %rbp, %rcx
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; X64: callq print_framealloc_from_fp
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; X64: retq
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; X86-LABEL: alloc_func:
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; X86: pushl %ebp
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; X86: movl %esp, %ebp
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; X86: subl $12, %esp
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; X86: Lalloc_func$frame_escape_0 = -4
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; X86: Lalloc_func$frame_escape_1 = -12
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; X86: movl $42, -4(%ebp)
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; X86: movl $13, -12(%ebp)
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; X86: pushl %ebp
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; X86: calll _print_framealloc_from_fp
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; X86: movl %ebp, %esp
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; X86: popl %ebp
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; X86: retl
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; Helper to make this a complete program so it can be compiled and tested.
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define i32 @main() {
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call void @alloc_func(i32 3)
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ret i32 0
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}
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define void @alloc_func_no_frameaddr() {
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%a = alloca i32
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%b = alloca i32
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call void (...) @llvm.localescape(i32* %a, i32* %b)
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store i32 42, i32* %a
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store i32 13, i32* %b
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call void @print_framealloc_from_fp(i8* null)
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ret void
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}
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; X64-LABEL: alloc_func_no_frameaddr:
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; X64: subq $40, %rsp
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; X64: .seh_stackalloc 40
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; X64: .seh_endprologue
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; X64: .Lalloc_func_no_frameaddr$frame_escape_0 = 36
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; X64: .Lalloc_func_no_frameaddr$frame_escape_1 = 32
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; X64: movl $42, 36(%rsp)
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; X64: movl $13, 32(%rsp)
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; X64: xorl %ecx, %ecx
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; X64: callq print_framealloc_from_fp
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; X64: addq $40, %rsp
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; X64: retq
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; X86-LABEL: alloc_func_no_frameaddr:
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; X86: subl $8, %esp
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; X86: Lalloc_func_no_frameaddr$frame_escape_0 = 4
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; X86: Lalloc_func_no_frameaddr$frame_escape_1 = 0
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; X86: movl $42, 4(%esp)
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; X86: movl $13, (%esp)
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; X86: pushl $0
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; X86: calll _print_framealloc_from_fp
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; X86: addl $12, %esp
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; X86: retl
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