maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

[x86] add cmov promotion tests for D36711; NFC 

This way we can see what the current codegen looks like.
I've also explicitly added/removed the cmov attribute from the RUN lines,
so we know exactly what we're checking in the runs.

llvm-svn: 311052
This commit is contained in:
Sanjay Patel 2017-08-16 22:50:11 +00:00
parent 03d5db48fc
commit 4abc3f6036
1 changed files with 107 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

107
llvm/test/CodeGen/X86/cmov-promotion.ll Normal file
View File

@ -0,0 +1,107 @@
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+cmov | FileCheck %s --check-prefix=CMOV
; RUN: llc < %s -mtriple=i686-unknown-unknown -mattr=-cmov | FileCheck %s --check-prefix=NO_CMOV
define i32 @cmov_zpromotion_16_to_32(i1 %c) {
; CMOV-LABEL: cmov_zpromotion_16_to_32:
; CMOV: # BB#0:
; CMOV-NEXT: testb $1, %dil
; CMOV-NEXT: movw $12414, %ax # imm = 0x307E
; CMOV-NEXT: movw $-1, %cx
; CMOV-NEXT: cmovnew %ax, %cx
; CMOV-NEXT: movzwl %cx, %eax
; CMOV-NEXT: retq
;
; NO_CMOV-LABEL: cmov_zpromotion_16_to_32:
; NO_CMOV: # BB#0:
; NO_CMOV-NEXT: testb $1, {{[0-9]+}}(%esp)
; NO_CMOV-NEXT: movw $12414, %ax # imm = 0x307E
; NO_CMOV-NEXT: jne .LBB0_2
; NO_CMOV-NEXT: # BB#1:
; NO_CMOV-NEXT: movw $-1, %ax
; NO_CMOV-NEXT: .LBB0_2:
; NO_CMOV-NEXT: movzwl %ax, %eax
; NO_CMOV-NEXT: retl
%t0 = select i1 %c, i16 12414, i16 -1
%ret = zext i16 %t0 to i32
ret i32 %ret
}
define i64 @cmov_zpromotion_16_to_64(i1 %c) {
; CMOV-LABEL: cmov_zpromotion_16_to_64:
; CMOV: # BB#0:
; CMOV-NEXT: testb $1, %dil
; CMOV-NEXT: movw $12414, %ax # imm = 0x307E
; CMOV-NEXT: movw $-1, %cx
; CMOV-NEXT: cmovnew %ax, %cx
; CMOV-NEXT: movzwl %cx, %eax
; CMOV-NEXT: retq
;
; NO_CMOV-LABEL: cmov_zpromotion_16_to_64:
; NO_CMOV: # BB#0:
; NO_CMOV-NEXT: testb $1, {{[0-9]+}}(%esp)
; NO_CMOV-NEXT: movw $12414, %ax # imm = 0x307E
; NO_CMOV-NEXT: jne .LBB1_2
; NO_CMOV-NEXT: # BB#1:
; NO_CMOV-NEXT: movw $-1, %ax
; NO_CMOV-NEXT: .LBB1_2:
; NO_CMOV-NEXT: movzwl %ax, %eax
; NO_CMOV-NEXT: xorl %edx, %edx
; NO_CMOV-NEXT: retl
%t0 = select i1 %c, i16 12414, i16 -1
%ret = zext i16 %t0 to i64
ret i64 %ret
}
define i32 @cmov_spromotion_16_to_32(i1 %c) {
; CMOV-LABEL: cmov_spromotion_16_to_32:
; CMOV: # BB#0:
; CMOV-NEXT: testb $1, %dil
; CMOV-NEXT: movw $12414, %ax # imm = 0x307E
; CMOV-NEXT: movw $-1, %cx
; CMOV-NEXT: cmovnew %ax, %cx
; CMOV-NEXT: movswl %cx, %eax
; CMOV-NEXT: retq
;
; NO_CMOV-LABEL: cmov_spromotion_16_to_32:
; NO_CMOV: # BB#0:
; NO_CMOV-NEXT: testb $1, {{[0-9]+}}(%esp)
; NO_CMOV-NEXT: movw $12414, %ax # imm = 0x307E
; NO_CMOV-NEXT: jne .LBB2_2
; NO_CMOV-NEXT: # BB#1:
; NO_CMOV-NEXT: movw $-1, %ax
; NO_CMOV-NEXT: .LBB2_2:
; NO_CMOV-NEXT: cwtl
; NO_CMOV-NEXT: retl
%t0 = select i1 %c, i16 12414, i16 -1
%ret = sext i16 %t0 to i32
ret i32 %ret
}
define i64 @cmov_spromotion_16_to_64(i1 %c) {
; CMOV-LABEL: cmov_spromotion_16_to_64:
; CMOV: # BB#0:
; CMOV-NEXT: testb $1, %dil
; CMOV-NEXT: movw $12414, %ax # imm = 0x307E
; CMOV-NEXT: movw $-1, %cx
; CMOV-NEXT: cmovnew %ax, %cx
; CMOV-NEXT: movswq %cx, %rax
; CMOV-NEXT: retq
;
; NO_CMOV-LABEL: cmov_spromotion_16_to_64:
; NO_CMOV: # BB#0:
; NO_CMOV-NEXT: testb $1, {{[0-9]+}}(%esp)
; NO_CMOV-NEXT: movw $12414, %ax # imm = 0x307E
; NO_CMOV-NEXT: jne .LBB3_2
; NO_CMOV-NEXT: # BB#1:
; NO_CMOV-NEXT: movw $-1, %ax
; NO_CMOV-NEXT: .LBB3_2:
; NO_CMOV-NEXT: cwtl
; NO_CMOV-NEXT: movl %eax, %edx
; NO_CMOV-NEXT: sarl $31, %edx
; NO_CMOV-NEXT: retl
%t0 = select i1 %c, i16 12414, i16 -1
%ret = sext i16 %t0 to i64
ret i64 %ret
}