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llvm-project/llvm/test/CodeGen/X86/segmented-stacks-dynamic.ll

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Instruction scheduling itinerary for Intel Atom. Adds an instruction itinerary to all x86 instructions, giving each a default latency of 1, using the InstrItinClass IIC_DEFAULT. Sets specific latencies for Atom for the instructions in files X86InstrCMovSetCC.td, X86InstrArithmetic.td, X86InstrControl.td, and X86InstrShiftRotate.td. The Atom latencies for the remainder of the x86 instructions will be set in subsequent patches. Adds a test to verify that the scheduler is working. Also changes the scheduling preference to "Hybrid" for i386 Atom, while leaving x86_64 as ILP. Patch by Preston Gurd! llvm-svn: 149558
2012-02-02 07:20:51 +08:00
; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X32
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -segmented-stacks -verify-machineinstrs | FileCheck %s -check-prefix=X64
; RUN: llc < %s -mcpu=generic -mtriple=i686-linux -segmented-stacks -filetype=obj
; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux -segmented-stacks -filetype=obj
Split segmented stacks tests into tests for static- and dynamic-size frames. Patch by Brian Anderson. llvm-svn: 147959
2012-01-12 02:51:03 +08:00
; Just to prevent the alloca from being optimized away
declare void @dummy_use(i32*, i32)
define i32 @test_basic(i32 %l) {
%mem = alloca i32, i32 %l
call void @dummy_use (i32* %mem, i32 %l)
%terminate = icmp eq i32 %l, 0
br i1 %terminate, label %true, label %false
true:
ret i32 0
false:
%newlen = sub i32 %l, 1
%retvalue = call i32 @test_basic(i32 %newlen)
ret i32 %retvalue
; X32: test_basic:
; X32: cmpl %gs:48, %esp
; X32-NEXT: ja .LBB0_2
; X32: pushl $4
; X32-NEXT: pushl $12
; X32-NEXT: calll __morestack
; X32-NEXT: ret
; X32: movl %esp, %eax
Revert "Temporarily enable MI-Sched on X86." This reverts commit 98a9b72e8c56dc13a2617de84503a3d78352789c. llvm-svn: 184823
2013-06-25 10:48:58 +08:00
; X32-NEXT: subl %ecx, %eax
Split segmented stacks tests into tests for static- and dynamic-size frames. Patch by Brian Anderson. llvm-svn: 147959
2012-01-12 02:51:03 +08:00
; X32-NEXT: cmpl %eax, %gs:48
; X32: movl %eax, %esp
; X32: subl $12, %esp
; X32-NEXT: pushl %ecx
; X32-NEXT: calll __morestack_allocate_stack_space
; X32-NEXT: addl $16, %esp
; X64: test_basic:
; X64: cmpq %fs:112, %rsp
; X64-NEXT: ja .LBB0_2
; X64: movabsq $24, %r10
; X64-NEXT: movabsq $0, %r11
; X64-NEXT: callq __morestack
; X64-NEXT: ret
Erase joined copies immediately. The late dead code elimination is no longer necessary. The test changes are cause by a register hint that can be either %rdi or %rax. The choice depends on the use list order, which this patch changes. llvm-svn: 157131
2012-05-20 04:54:07 +08:00
; X64: movq %rsp, %[[RDI:rdi|rax]]
Revert "Temporarily enable MI-Sched on X86." This reverts commit 98a9b72e8c56dc13a2617de84503a3d78352789c. llvm-svn: 184823
2013-06-25 10:48:58 +08:00
; X64-NEXT: subq %{{.*}}, %[[RDI]]
Erase joined copies immediately. The late dead code elimination is no longer necessary. The test changes are cause by a register hint that can be either %rdi or %rax. The choice depends on the use list order, which this patch changes. llvm-svn: 157131
2012-05-20 04:54:07 +08:00
; X64-NEXT: cmpq %[[RDI]], %fs:112
Split segmented stacks tests into tests for static- and dynamic-size frames. Patch by Brian Anderson. llvm-svn: 147959
2012-01-12 02:51:03 +08:00
Erase joined copies immediately. The late dead code elimination is no longer necessary. The test changes are cause by a register hint that can be either %rdi or %rax. The choice depends on the use list order, which this patch changes. llvm-svn: 157131
2012-05-20 04:54:07 +08:00
; X64: movq %[[RDI]], %rsp
Split segmented stacks tests into tests for static- and dynamic-size frames. Patch by Brian Anderson. llvm-svn: 147959
2012-01-12 02:51:03 +08:00
Erase joined copies immediately. The late dead code elimination is no longer necessary. The test changes are cause by a register hint that can be either %rdi or %rax. The choice depends on the use list order, which this patch changes. llvm-svn: 157131
2012-05-20 04:54:07 +08:00
; X64: movq %{{.*}}, %rdi
Split segmented stacks tests into tests for static- and dynamic-size frames. Patch by Brian Anderson. llvm-svn: 147959
2012-01-12 02:51:03 +08:00
; X64-NEXT: callq __morestack_allocate_stack_space
Erase joined copies immediately. The late dead code elimination is no longer necessary. The test changes are cause by a register hint that can be either %rdi or %rax. The choice depends on the use list order, which this patch changes. llvm-svn: 157131
2012-05-20 04:54:07 +08:00
; X64: movq %rax, %rdi
Split segmented stacks tests into tests for static- and dynamic-size frames. Patch by Brian Anderson. llvm-svn: 147959
2012-01-12 02:51:03 +08:00
}