mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-23 21:13:02 +02:00
6b818e650d
This will result in a KMOVW or KMOVD being emitted during register allocation. And in at least some cases this might allow the register coalescer to remove the copy all together. llvm-svn: 298984
87 lines
3.1 KiB
LLVM
87 lines
3.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
|
|
; RUN: llc < %s -fast-isel -mtriple=i686-unknown-unknown -O0 -mcpu=skx | FileCheck %s
|
|
|
|
define i32 @_Z3foov() {
|
|
; CHECK-LABEL: _Z3foov:
|
|
; CHECK: # BB#0: # %entry
|
|
; CHECK-NEXT: subl $20, %esp
|
|
; CHECK-NEXT: .Lcfi0:
|
|
; CHECK-NEXT: .cfi_def_cfa_offset 24
|
|
; CHECK-NEXT: movw $10959, {{[0-9]+}}(%esp) # imm = 0x2ACF
|
|
; CHECK-NEXT: movw $-15498, {{[0-9]+}}(%esp) # imm = 0xC376
|
|
; CHECK-NEXT: movw $19417, {{[0-9]+}}(%esp) # imm = 0x4BD9
|
|
; CHECK-NEXT: movzwl {{[0-9]+}}(%esp), %eax
|
|
; CHECK-NEXT: movw {{[0-9]+}}(%esp), %cx
|
|
; CHECK-NEXT: kxnorw %k0, %k0, %k0
|
|
; CHECK-NEXT: kshiftrw $15, %k0, %k0
|
|
; CHECK-NEXT: testw %cx, %cx
|
|
; CHECK-NEXT: movl %eax, {{[0-9]+}}(%esp) # 4-byte Spill
|
|
; CHECK-NEXT: kmovw %k0, {{[0-9]+}}(%esp) # 2-byte Spill
|
|
; CHECK-NEXT: jne .LBB0_2
|
|
; CHECK-NEXT: jmp .LBB0_1
|
|
; CHECK-NEXT: .LBB0_1: # %lor.rhs
|
|
; CHECK-NEXT: xorl %eax, %eax
|
|
; CHECK-NEXT: kmovd %eax, %k0
|
|
; CHECK-NEXT: kmovw %k0, {{[0-9]+}}(%esp) # 2-byte Spill
|
|
; CHECK-NEXT: jmp .LBB0_2
|
|
; CHECK-NEXT: .LBB0_2: # %lor.end
|
|
; CHECK-NEXT: kmovw {{[0-9]+}}(%esp), %k0 # 2-byte Reload
|
|
; CHECK-NEXT: kxnorw %k0, %k0, %k1
|
|
; CHECK-NEXT: kshiftrw $15, %k1, %k1
|
|
; CHECK-NEXT: movb $1, %al
|
|
; CHECK-NEXT: testb %al, %al
|
|
; CHECK-NEXT: kmovw %k0, {{[0-9]+}}(%esp) # 2-byte Spill
|
|
; CHECK-NEXT: kmovw %k1, {{[0-9]+}}(%esp) # 2-byte Spill
|
|
; CHECK-NEXT: jne .LBB0_4
|
|
; CHECK-NEXT: jmp .LBB0_3
|
|
; CHECK-NEXT: .LBB0_3: # %lor.rhs4
|
|
; CHECK-NEXT: xorl %eax, %eax
|
|
; CHECK-NEXT: kmovd %eax, %k0
|
|
; CHECK-NEXT: kmovw %k0, {{[0-9]+}}(%esp) # 2-byte Spill
|
|
; CHECK-NEXT: jmp .LBB0_4
|
|
; CHECK-NEXT: .LBB0_4: # %lor.end5
|
|
; CHECK-NEXT: kmovw {{[0-9]+}}(%esp), %k0 # 2-byte Reload
|
|
; CHECK-NEXT: kmovd %k0, %eax
|
|
; CHECK-NEXT: andl $1, %eax
|
|
; CHECK-NEXT: movw %ax, %cx
|
|
; CHECK-NEXT: movw %cx, {{[0-9]+}}(%esp)
|
|
; CHECK-NEXT: movzwl {{[0-9]+}}(%esp), %eax
|
|
; CHECK-NEXT: addl $20, %esp
|
|
; CHECK-NEXT: retl
|
|
entry:
|
|
%aa = alloca i16, align 2
|
|
%bb = alloca i16, align 2
|
|
%cc = alloca i16, align 2
|
|
store i16 10959, i16* %aa, align 2
|
|
store i16 -15498, i16* %bb, align 2
|
|
store i16 19417, i16* %cc, align 2
|
|
%0 = load i16, i16* %aa, align 2
|
|
%conv = zext i16 %0 to i32
|
|
%1 = load i16, i16* %cc, align 2
|
|
%tobool = icmp ne i16 %1, 0
|
|
br i1 %tobool, label %lor.end, label %lor.rhs
|
|
|
|
lor.rhs: ; preds = %entry
|
|
br label %lor.end
|
|
|
|
lor.end: ; preds = %lor.rhs, %entry
|
|
%2 = phi i1 [ true, %entry ], [ false, %lor.rhs ]
|
|
%conv1 = zext i1 %2 to i32
|
|
%cmp = icmp slt i32 %conv, %conv1
|
|
%conv2 = zext i1 %cmp to i32
|
|
%neg = xor i32 %conv2, -1
|
|
%tobool3 = icmp ne i32 %neg, 0
|
|
br i1 %tobool3, label %lor.end5, label %lor.rhs4
|
|
|
|
lor.rhs4: ; preds = %lor.end
|
|
br label %lor.end5
|
|
|
|
lor.end5: ; preds = %lor.rhs4, %lor.end
|
|
%3 = phi i1 [ true, %lor.end ], [ false, %lor.rhs4 ]
|
|
%conv6 = zext i1 %3 to i16
|
|
store i16 %conv6, i16* %bb, align 2
|
|
%4 = load i16, i16* %bb, align 2
|
|
%conv7 = zext i16 %4 to i32
|
|
ret i32 %conv7
|
|
}
|