mirror of
https://github.com/c64scene-ar/llvm-6502.git
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f08cddcf56
Note: This was originally reverted to track down a buildbot error. This commit exposed a latent bug that was fixed in r215753. Therefore it is reapplied without any modifications. I run it through SPEC2k and SPEC2k6 for AArch64 and it didn't introduce any new regeressions. Original commit message: This changes the order in which FastISel tries to materialize a constant. Originally it would try to use a simple target-independent approach, which can lead to the generation of inefficient code. On X86 this would result in the use of movabsq to materialize any 64bit integer constant - even for simple and small values such as 0 and 1. Also some very funny floating-point materialization could be observed too. On AArch64 it would materialize the constant 0 in a register even the architecture has an actual "zero" register. On ARM it would generate unnecessary mov instructions or not use mvn. This change simply changes the order and always asks the target first if it likes to materialize the constant. This doesn't fix all the issues mentioned above, but it enables the targets to implement such optimizations. Related to <rdar://problem/17420988>. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216006 91177308-0d34-0410-b5e6-96231b3b80d8
259 lines
9.5 KiB
LLVM
259 lines
9.5 KiB
LLVM
; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios -verify-machineinstrs | FileCheck %s --check-prefix=ARM
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; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=armv7-linux-gnueabi -verify-machineinstrs | FileCheck %s --check-prefix=ARM
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; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios -verify-machineinstrs | FileCheck %s --check-prefix=THUMB
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; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=armv7-apple-ios -arm-long-calls -verify-machineinstrs | FileCheck %s --check-prefix=ARM-LONG
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; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=armv7-linux-gnueabi -arm-long-calls -verify-machineinstrs | FileCheck %s --check-prefix=ARM-LONG
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; RUN: llc < %s -O0 -fast-isel-abort -relocation-model=dynamic-no-pic -mtriple=thumbv7-apple-ios -arm-long-calls -verify-machineinstrs | FileCheck %s --check-prefix=THUMB-LONG
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; Note that some of these tests assume that relocations are either
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; movw/movt or constant pool loads. Different platforms will select
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; different approaches.
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@message1 = global [60 x i8] c"The LLVM Compiler Infrastructure\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", align 1
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@temp = common global [60 x i8] zeroinitializer, align 1
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define void @t1() nounwind ssp {
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; ARM-LABEL: t1:
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; ARM: {{(movw r0, :lower16:_?message1)|(ldr r0, .LCPI)}}
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; ARM: {{(movt r0, :upper16:_?message1)|(ldr r0, \[r0\])}}
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; ARM: add r0, r0, #5
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; ARM: movw r1, #64
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; ARM: movw r2, #10
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; ARM: and r1, r1, #255
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; ARM: bl {{_?}}memset
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; ARM-LONG-LABEL: t1:
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; ARM-LONG: {{(movw r3, :lower16:L_memset\$non_lazy_ptr)|(ldr r3, .LCPI)}}
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; ARM-LONG: {{(movt r3, :upper16:L_memset\$non_lazy_ptr)?}}
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; ARM-LONG: ldr r3, [r3]
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; ARM-LONG: blx r3
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; THUMB-LABEL: t1:
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; THUMB: {{(movw r0, :lower16:_?message1)|(ldr.n r0, .LCPI)}}
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; THUMB: {{(movt r0, :upper16:_?message1)|(ldr r0, \[r0\])}}
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; THUMB: adds r0, #5
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; THUMB: movs r1, #64
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; THUMB: movs r2, #10
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; THUMB: and r1, r1, #255
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; THUMB: bl {{_?}}memset
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; THUMB-LONG-LABEL: t1:
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; THUMB-LONG: movw r3, :lower16:L_memset$non_lazy_ptr
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; THUMB-LONG: movt r3, :upper16:L_memset$non_lazy_ptr
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; THUMB-LONG: ldr r3, [r3]
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; THUMB-LONG: blx r3
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call void @llvm.memset.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @message1, i32 0, i32 5), i8 64, i32 10, i32 4, i1 false)
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ret void
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}
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declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) nounwind
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define void @t2() nounwind ssp {
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; ARM-LABEL: t2:
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; ARM: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr r0, .LCPI)}}
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; ARM: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; ARM: ldr r0, [r0]
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; ARM: add r1, r0, #4
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; ARM: add r0, r0, #16
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; ARM: movw r2, #17
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; ARM: str r0, [sp[[SLOT:[, #0-9]*]]] @ 4-byte Spill
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; ARM: mov r0, r1
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; ARM: ldr r1, [sp[[SLOT]]] @ 4-byte Reload
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; ARM: bl {{_?}}memcpy
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; ARM-LONG-LABEL: t2:
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; ARM-LONG: {{(movw r3, :lower16:L_memcpy\$non_lazy_ptr)|(ldr r3, .LCPI)}}
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; ARM-LONG: {{(movt r3, :upper16:L_memcpy\$non_lazy_ptr)?}}
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; ARM-LONG: ldr r3, [r3]
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; ARM-LONG: blx r3
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; THUMB-LABEL: t2:
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; THUMB: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr.n r0, .LCPI)}}
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; THUMB: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; THUMB: ldr r0, [r0]
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; THUMB: adds r1, r0, #4
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; THUMB: adds r0, #16
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; THUMB: movs r2, #17
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; THUMB: str r0, [sp[[SLOT:[, #0-9]*]]] @ 4-byte Spill
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; THUMB: mov r0, r1
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; THUMB: ldr r1, [sp[[SLOT]]] @ 4-byte Reload
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; THUMB: bl {{_?}}memcpy
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; THUMB-LONG-LABEL: t2:
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; THUMB-LONG: movw r3, :lower16:L_memcpy$non_lazy_ptr
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; THUMB-LONG: movt r3, :upper16:L_memcpy$non_lazy_ptr
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; THUMB-LONG: ldr r3, [r3]
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; THUMB-LONG: blx r3
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 4), i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 16), i32 17, i32 4, i1 false)
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
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define void @t3() nounwind ssp {
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; ARM-LABEL: t3:
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; ARM: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr r0, .LCPI)}}
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; ARM: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; ARM: ldr r0, [r0]
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; ARM: add r1, r0, #4
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; ARM: add r0, r0, #16
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; ARM: movw r2, #10
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; ARM: mov r0, r1
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; ARM: bl {{_?}}memmove
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; ARM-LONG-LABEL: t3:
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; ARM-LONG: {{(movw r3, :lower16:L_memmove\$non_lazy_ptr)|(ldr r3, .LCPI)}}
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; ARM-LONG: {{(movt r3, :upper16:L_memmove\$non_lazy_ptr)?}}
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; ARM-LONG: ldr r3, [r3]
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; ARM-LONG: blx r3
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; THUMB-LABEL: t3:
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; THUMB: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr.n r0, .LCPI)}}
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; THUMB: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; THUMB: ldr r0, [r0]
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; THUMB: adds r1, r0, #4
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; THUMB: adds r0, #16
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; THUMB: movs r2, #10
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; THUMB: str r0, [sp[[SLOT:[, #0-9]*]]] @ 4-byte Spill
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; THUMB: mov r0, r1
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; THUMB: ldr r1, [sp[[SLOT]]] @ 4-byte Reload
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; THUMB: bl {{_?}}memmove
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; THUMB-LONG-LABEL: t3:
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; THUMB-LONG: movw r3, :lower16:L_memmove$non_lazy_ptr
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; THUMB-LONG: movt r3, :upper16:L_memmove$non_lazy_ptr
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; THUMB-LONG: ldr r3, [r3]
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; THUMB-LONG: blx r3
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call void @llvm.memmove.p0i8.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 4), i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 16), i32 10, i32 1, i1 false)
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ret void
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}
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define void @t4() nounwind ssp {
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; ARM-LABEL: t4:
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; ARM: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr r0, .LCPI)}}
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; ARM: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; ARM: ldr r0, [r0]
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; ARM: ldr r1, [r0, #16]
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; ARM: str r1, [r0, #4]
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; ARM: ldr r1, [r0, #20]
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; ARM: str r1, [r0, #8]
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; ARM: ldrh r1, [r0, #24]
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; ARM: strh r1, [r0, #12]
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; ARM: bx lr
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; THUMB-LABEL: t4:
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; THUMB: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr.n r0, .LCPI)}}
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; THUMB: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; THUMB: ldr r0, [r0]
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; THUMB: ldr r1, [r0, #16]
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; THUMB: str r1, [r0, #4]
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; THUMB: ldr r1, [r0, #20]
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; THUMB: str r1, [r0, #8]
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; THUMB: ldrh r1, [r0, #24]
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; THUMB: strh r1, [r0, #12]
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; THUMB: bx lr
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 4), i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 16), i32 10, i32 4, i1 false)
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ret void
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}
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declare void @llvm.memmove.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
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define void @t5() nounwind ssp {
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; ARM-LABEL: t5:
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; ARM: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr r0, .LCPI)}}
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; ARM: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; ARM: ldr r0, [r0]
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; ARM: ldrh r1, [r0, #16]
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; ARM: strh r1, [r0, #4]
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; ARM: ldrh r1, [r0, #18]
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; ARM: strh r1, [r0, #6]
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; ARM: ldrh r1, [r0, #20]
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; ARM: strh r1, [r0, #8]
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; ARM: ldrh r1, [r0, #22]
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; ARM: strh r1, [r0, #10]
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; ARM: ldrh r1, [r0, #24]
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; ARM: strh r1, [r0, #12]
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; ARM: bx lr
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; THUMB-LABEL: t5:
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; THUMB: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr.n r0, .LCPI)}}
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; THUMB: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; THUMB: ldr r0, [r0]
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; THUMB: ldrh r1, [r0, #16]
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; THUMB: strh r1, [r0, #4]
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; THUMB: ldrh r1, [r0, #18]
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; THUMB: strh r1, [r0, #6]
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; THUMB: ldrh r1, [r0, #20]
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; THUMB: strh r1, [r0, #8]
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; THUMB: ldrh r1, [r0, #22]
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; THUMB: strh r1, [r0, #10]
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; THUMB: ldrh r1, [r0, #24]
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; THUMB: strh r1, [r0, #12]
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; THUMB: bx lr
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 4), i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 16), i32 10, i32 2, i1 false)
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ret void
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}
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define void @t6() nounwind ssp {
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; ARM-LABEL: t6:
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; ARM: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr r0, .LCPI)}}
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; ARM: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; ARM: ldr r0, [r0]
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; ARM: ldrb r1, [r0, #16]
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; ARM: strb r1, [r0, #4]
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; ARM: ldrb r1, [r0, #17]
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; ARM: strb r1, [r0, #5]
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; ARM: ldrb r1, [r0, #18]
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; ARM: strb r1, [r0, #6]
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; ARM: ldrb r1, [r0, #19]
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; ARM: strb r1, [r0, #7]
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; ARM: ldrb r1, [r0, #20]
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; ARM: strb r1, [r0, #8]
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; ARM: ldrb r1, [r0, #21]
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; ARM: strb r1, [r0, #9]
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; ARM: ldrb r1, [r0, #22]
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; ARM: strb r1, [r0, #10]
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; ARM: ldrb r1, [r0, #23]
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; ARM: strb r1, [r0, #11]
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; ARM: ldrb r1, [r0, #24]
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; ARM: strb r1, [r0, #12]
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; ARM: ldrb r1, [r0, #25]
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; ARM: strb r1, [r0, #13]
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; ARM: bx lr
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; THUMB-LABEL: t6:
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; THUMB: {{(movw r0, :lower16:L_temp\$non_lazy_ptr)|(ldr.n r0, .LCPI)}}
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; THUMB: {{(movt r0, :upper16:L_temp\$non_lazy_ptr)?}}
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; THUMB: ldr r0, [r0]
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; THUMB: ldrb r1, [r0, #16]
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; THUMB: strb r1, [r0, #4]
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; THUMB: ldrb r1, [r0, #17]
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; THUMB: strb r1, [r0, #5]
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; THUMB: ldrb r1, [r0, #18]
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; THUMB: strb r1, [r0, #6]
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; THUMB: ldrb r1, [r0, #19]
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; THUMB: strb r1, [r0, #7]
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; THUMB: ldrb r1, [r0, #20]
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; THUMB: strb r1, [r0, #8]
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; THUMB: ldrb r1, [r0, #21]
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; THUMB: strb r1, [r0, #9]
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; THUMB: ldrb r1, [r0, #22]
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; THUMB: strb r1, [r0, #10]
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; THUMB: ldrb r1, [r0, #23]
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; THUMB: strb r1, [r0, #11]
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; THUMB: ldrb r1, [r0, #24]
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; THUMB: strb r1, [r0, #12]
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; THUMB: ldrb r1, [r0, #25]
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; THUMB: strb r1, [r0, #13]
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; THUMB: bx lr
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 4), i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 16), i32 10, i32 1, i1 false)
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ret void
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}
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; rdar://13202135
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define void @t7() nounwind ssp {
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; Just make sure this doesn't assert when we have an odd length and an alignment of 2.
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 4), i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 16), i32 3, i32 2, i1 false)
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ret void
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}
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define i32 @t8(i32 %x) nounwind {
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entry:
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; ARM-LABEL: t8:
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; ARM-NOT: FastISel missed call: %expval = call i32 @llvm.expect.i32(i32 %x, i32 1)
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; THUMB-LABEL: t8:
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; THUMB-NOT: FastISel missed call: %expval = call i32 @llvm.expect.i32(i32 %x, i32 1)
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%expval = call i32 @llvm.expect.i32(i32 %x, i32 1)
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ret i32 %expval
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}
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declare i32 @llvm.expect.i32(i32, i32) nounwind readnone
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