maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity
llvm-project/llvm/test/CodeGen/X86/fast-isel-bc.ll

32 lines
962 B
LLVM
Raw Normal View History

[X86][MMX] Regenerate MMX bitcast test llvm-svn: 325611
2018-02-21 02:48:29 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
[X86][MMX] Run MMX bitcast test on 32 and 64-bit targets llvm-svn: 325707
2018-02-22 02:52:16 +08:00
; RUN: llc < %s -O0 -mtriple=i686-apple-darwin9.8 -mattr=+mmx,+sse2 | FileCheck %s --check-prefixes=X86
; RUN: llc < %s -O0 -mtriple=x86_64-apple-darwin9.8 -mattr=+mmx,+sse2 | FileCheck %s --check-prefixes=X64
Teach X86FastISel how to handle CCValAssign::BCvt, which is used for MMX arguments. This fixes PR4684. llvm-svn: 78163
2009-08-05 13:33:42 +08:00
[X86][MMX] Run MMX bitcast test on 32 and 64-bit targets llvm-svn: 325707
2018-02-22 02:52:16 +08:00
; PR4684
Teach X86FastISel how to handle CCValAssign::BCvt, which is used for MMX arguments. This fixes PR4684. llvm-svn: 78163
2009-08-05 13:33:42 +08:00
Massive rewrite of MMX: The x86_mmx type is used for MMX intrinsics, parameters and return values where these use MMX registers, and is also supported in load, store, and bitcast. Only the above operations generate MMX instructions, and optimizations do not operate on or produce MMX intrinsics. MMX-sized vectors <2 x i32> etc. are lowered to XMM or split into smaller pieces. Optimizations may occur on these forms and the result casted back to x86_mmx, provided the result feeds into a previous existing x86_mmx operation. The point of all this is prevent optimizations from introducing MMX operations, which is unsafe due to the EMMS problem. llvm-svn: 115243
2010-10-01 07:57:10 +08:00
declare void @func2(x86_mmx)
Teach X86FastISel how to handle CCValAssign::BCvt, which is used for MMX arguments. This fixes PR4684. llvm-svn: 78163
2009-08-05 13:33:42 +08:00
; This isn't spectacular, but it's MMX code at -O0...
[X86][MMX] Regenerate MMX bitcast test llvm-svn: 325611
2018-02-21 02:48:29 +08:00
define void @func1() nounwind {
[X86][MMX] Run MMX bitcast test on 32 and 64-bit targets llvm-svn: 325707
2018-02-22 02:52:16 +08:00
; X86-LABEL: func1:
; X86: ## %bb.0:
; X86-NEXT: subl $12, %esp
[X86][MMX] Improve handling of 64-bit MMX constants 64-bit MMX constant generation usually ends up lowering into SSE instructions before being spilled/reloaded as a MMX type. This patch bitcasts the constant to a double value to allow correct loading directly to the MMX register. I've added MMX constant asm comment support to improve testing, it's better to always print the double values as hex constants as MMX is mainly an integer unit (and even with 3DNow! its just floats). Differential Revision: https://reviews.llvm.org/D43616 llvm-svn: 326497
2018-03-02 06:22:31 +08:00
; X86-NEXT: movq LCPI0_0, %mm0 ## mm0 = 0x200000000
[X86][MMX] Run MMX bitcast test on 32 and 64-bit targets llvm-svn: 325707
2018-02-22 02:52:16 +08:00
; X86-NEXT: calll _func2
; X86-NEXT: addl $12, %esp
; X86-NEXT: retl
;
; X64-LABEL: func1:
; X64: ## %bb.0:
; X64-NEXT: pushq %rax
[X86][MMX] Improve handling of 64-bit MMX constants 64-bit MMX constant generation usually ends up lowering into SSE instructions before being spilled/reloaded as a MMX type. This patch bitcasts the constant to a double value to allow correct loading directly to the MMX register. I've added MMX constant asm comment support to improve testing, it's better to always print the double values as hex constants as MMX is mainly an integer unit (and even with 3DNow! its just floats). Differential Revision: https://reviews.llvm.org/D43616 llvm-svn: 326497
2018-03-02 06:22:31 +08:00
; X64-NEXT: movq {{.*}}(%rip), %mm0 ## mm0 = 0x200000000
[X86][MMX] Run MMX bitcast test on 32 and 64-bit targets llvm-svn: 325707
2018-02-22 02:52:16 +08:00
; X64-NEXT: movq2dq %mm0, %xmm0
; X64-NEXT: callq _func2
; X64-NEXT: popq %rax
; X64-NEXT: retq
[X86][MMX] Regenerate MMX bitcast test llvm-svn: 325611
2018-02-21 02:48:29 +08:00
%tmp0 = bitcast <2 x i32> <i32 0, i32 2> to x86_mmx
call void @func2(x86_mmx %tmp0)
ret void
Teach X86FastISel how to handle CCValAssign::BCvt, which is used for MMX arguments. This fixes PR4684. llvm-svn: 78163
2009-08-05 13:33:42 +08:00
}