[X86][NFC] Moved/Updated llvm.set.rounding testcases (#155434)

- Moved llvm.set.rounding testcases from llvm/test/CodeGen/X86/fpenv.ll to
llvm/test/CodeGen/X86/isel-llvm.set.rounding.ll.
- Added GlobalIsel RUNs as precommit test and will add llvm.set.rounding
GISEL implementation PR after this merge.

Author: JaydeepChauhan14

llvm/test/CodeGen/X86/fpenv.ll

@@ -11,244 +11,6 @@ declare i32 @llvm.get.fpmode.i32()
 declare void @llvm.set.fpmode.i32(i32 %fpmode)
 declare void @llvm.reset.fpmode()
 
-define void @func_01() nounwind {
-; X86-NOSSE-LABEL: func_01:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    orb $12, {{[0-9]+}}(%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_01:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    orb $12, {{[0-9]+}}(%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    orb $96, {{[0-9]+}}(%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_01:
-; X64:       # %bb.0:
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    orb $12, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    orb $96, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 0)  ; TowardZero (CW[11-10] = 11)
-  ret void
-}
-
-define void @func_02() nounwind {
-; X86-NOSSE-LABEL: func_02:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    andb $-13, {{[0-9]+}}(%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_02:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    andb $-13, {{[0-9]+}}(%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    andb $-97, {{[0-9]+}}(%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_02:
-; X64:       # %bb.0:
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    andb $-13, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    andb $-97, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 1)  ; ToNearestTiesToEven (CW[11-10] = 00)
-  ret void
-}
-
-define void @func_03() nounwind {
-; X86-NOSSE-LABEL: func_03:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X86-NOSSE-NEXT:    andl (%esp), %eax
-; X86-NOSSE-NEXT:    orl $2048, %eax # imm = 0x800
-; X86-NOSSE-NEXT:    movw %ax, (%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_03:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X86-SSE-NEXT:    andl (%esp), %eax
-; X86-SSE-NEXT:    orl $2048, %eax # imm = 0x800
-; X86-SSE-NEXT:    movw %ax, (%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    movl $-24577, %eax # imm = 0x9FFF
-; X86-SSE-NEXT:    andl (%esp), %eax
-; X86-SSE-NEXT:    orl $16384, %eax # imm = 0x4000
-; X86-SSE-NEXT:    movl %eax, (%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_03:
-; X64:       # %bb.0:
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    orl $2048, %eax # imm = 0x800
-; X64-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-24577, %eax # imm = 0x9FFF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    orl $16384, %eax # imm = 0x4000
-; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 2)  ; Upward (CW[11-10] = 10)
-  ret void
-}
-
-define void @func_04() nounwind {
-; X86-NOSSE-LABEL: func_04:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X86-NOSSE-NEXT:    andl (%esp), %eax
-; X86-NOSSE-NEXT:    orl $1024, %eax # imm = 0x400
-; X86-NOSSE-NEXT:    movw %ax, (%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_04:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X86-SSE-NEXT:    andl (%esp), %eax
-; X86-SSE-NEXT:    orl $1024, %eax # imm = 0x400
-; X86-SSE-NEXT:    movw %ax, (%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    movl $-24577, %eax # imm = 0x9FFF
-; X86-SSE-NEXT:    andl (%esp), %eax
-; X86-SSE-NEXT:    orl $8192, %eax # imm = 0x2000
-; X86-SSE-NEXT:    movl %eax, (%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_04:
-; X64:       # %bb.0:
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-3073, %eax # imm = 0xF3FF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    orl $1024, %eax # imm = 0x400
-; X64-NEXT:    movw %ax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-24577, %eax # imm = 0x9FFF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %eax
-; X64-NEXT:    orl $8192, %eax # imm = 0x2000
-; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 3)  ; Downward (CW[11-10] = 01)
-  ret void
-}
-
-define void @func_05(i32 %x) nounwind {
-; X86-NOSSE-LABEL: func_05:
-; X86-NOSSE:       # %bb.0:
-; X86-NOSSE-NEXT:    pushl %eax
-; X86-NOSSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X86-NOSSE-NEXT:    leal 4(%eax,%eax), %ecx
-; X86-NOSSE-NEXT:    movl $201, %eax
-; X86-NOSSE-NEXT:    # kill: def $cl killed $cl killed $ecx
-; X86-NOSSE-NEXT:    shll %cl, %eax
-; X86-NOSSE-NEXT:    andl $3072, %eax # imm = 0xC00
-; X86-NOSSE-NEXT:    fnstcw (%esp)
-; X86-NOSSE-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
-; X86-NOSSE-NEXT:    andl (%esp), %ecx
-; X86-NOSSE-NEXT:    orl %eax, %ecx
-; X86-NOSSE-NEXT:    movw %cx, (%esp)
-; X86-NOSSE-NEXT:    fldcw (%esp)
-; X86-NOSSE-NEXT:    popl %eax
-; X86-NOSSE-NEXT:    retl
-;
-; X86-SSE-LABEL: func_05:
-; X86-SSE:       # %bb.0:
-; X86-SSE-NEXT:    pushl %eax
-; X86-SSE-NEXT:    movl {{[0-9]+}}(%esp), %eax
-; X86-SSE-NEXT:    leal 4(%eax,%eax), %ecx
-; X86-SSE-NEXT:    movl $201, %eax
-; X86-SSE-NEXT:    # kill: def $cl killed $cl killed $ecx
-; X86-SSE-NEXT:    shll %cl, %eax
-; X86-SSE-NEXT:    andl $3072, %eax # imm = 0xC00
-; X86-SSE-NEXT:    fnstcw (%esp)
-; X86-SSE-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
-; X86-SSE-NEXT:    andl (%esp), %ecx
-; X86-SSE-NEXT:    orl %eax, %ecx
-; X86-SSE-NEXT:    movw %cx, (%esp)
-; X86-SSE-NEXT:    fldcw (%esp)
-; X86-SSE-NEXT:    stmxcsr (%esp)
-; X86-SSE-NEXT:    movl $-24577, %ecx # imm = 0x9FFF
-; X86-SSE-NEXT:    andl (%esp), %ecx
-; X86-SSE-NEXT:    leal (%ecx,%eax,8), %eax
-; X86-SSE-NEXT:    movl %eax, (%esp)
-; X86-SSE-NEXT:    ldmxcsr (%esp)
-; X86-SSE-NEXT:    popl %eax
-; X86-SSE-NEXT:    retl
-;
-; X64-LABEL: func_05:
-; X64:       # %bb.0:
-; X64-NEXT:    # kill: def $edi killed $edi def $rdi
-; X64-NEXT:    leal 4(%rdi,%rdi), %ecx
-; X64-NEXT:    movl $201, %eax
-; X64-NEXT:    # kill: def $cl killed $cl killed $ecx
-; X64-NEXT:    shll %cl, %eax
-; X64-NEXT:    andl $3072, %eax # imm = 0xC00
-; X64-NEXT:    fnstcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-3073, %ecx # imm = 0xF3FF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %ecx
-; X64-NEXT:    orl %eax, %ecx
-; X64-NEXT:    movw %cx, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    fldcw -{{[0-9]+}}(%rsp)
-; X64-NEXT:    stmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    movl $-24577, %ecx # imm = 0x9FFF
-; X64-NEXT:    andl -{{[0-9]+}}(%rsp), %ecx
-; X64-NEXT:    leal (%rcx,%rax,8), %eax
-; X64-NEXT:    movl %eax, -{{[0-9]+}}(%rsp)
-; X64-NEXT:    ldmxcsr -{{[0-9]+}}(%rsp)
-; X64-NEXT:    retq
-  call void @llvm.set.rounding(i32 %x)  ; Downward
-  ret void
-}
-
 define void @get_fpenv_01(ptr %ptr) #0 {
 ; X86-NOSSE-LABEL: get_fpenv_01:
 ; X86-NOSSE:       # %bb.0: # %entry