[X86] Cleanup the lrint/llrint/lround/llround tests a bit.

We don't need tests for truncating the result. There's nothing
special about those truncates.

We can test llrint/llround for 64-bit and 32-bit targets in the same file.
Same with lrint/lround with i32 result result. lrint/lround with
64-bit result should only occur on a 64-bit target.

Add some missing tests for f80 conversions.

Author: topperc

llvm/test/CodeGen/X86/llrint-conv-i32.ll

@@ -1,78 +1,96 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
-; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s
-
-define i32 @testmsws(float %x) {
-; CHECK-LABEL: testmsws:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    pushq %rax
-; CHECK-NEXT:    .cfi_def_cfa_offset 16
-; CHECK-NEXT:    callq llrintf
-; CHECK-NEXT:    # kill: def $eax killed $eax killed $rax
-; CHECK-NEXT:    popq %rcx
-; CHECK-NEXT:    .cfi_def_cfa_offset 8
-; CHECK-NEXT:    retq
-entry:
-  %0 = tail call i64 @llvm.llrint.f32(float %x)
-  %conv = trunc i64 %0 to i32
-  ret i32 %conv
-}
+; RUN: llc < %s -mtriple=i686-unknown             | FileCheck %s --check-prefix=X86
+; RUN: llc < %s -mtriple=i686-unknown -mattr=sse2 | FileCheck %s --check-prefix=SSE2
+; RUN: llc < %s -mtriple=x86_64-unknown | FileCheck %s --check-prefix=X64
 
 define i64 @testmsxs(float %x) {
-; CHECK-LABEL: testmsxs:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    jmp llrintf # TAILCALL
+; X86-LABEL: testmsxs:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    pushl %eax
+; X86-NEXT:    .cfi_def_cfa_offset 8
+; X86-NEXT:    flds {{[0-9]+}}(%esp)
+; X86-NEXT:    fstps (%esp)
+; X86-NEXT:    calll llrintf
+; X86-NEXT:    popl %ecx
+; X86-NEXT:    .cfi_def_cfa_offset 4
+; X86-NEXT:    retl
+;
+; SSE2-LABEL: testmsxs:
+; SSE2:       # %bb.0: # %entry
+; SSE2-NEXT:    pushl %eax
+; SSE2-NEXT:    .cfi_def_cfa_offset 8
+; SSE2-NEXT:    movss {{.*#+}} xmm0 = mem[0],zero,zero,zero
+; SSE2-NEXT:    movss %xmm0, (%esp)
+; SSE2-NEXT:    calll llrintf
+; SSE2-NEXT:    popl %ecx
+; SSE2-NEXT:    .cfi_def_cfa_offset 4
+; SSE2-NEXT:    retl
+;
+; X64-LABEL: testmsxs:
+; X64:       # %bb.0: # %entry
+; X64-NEXT:    jmp llrintf # TAILCALL
 entry:
   %0 = tail call i64 @llvm.llrint.f32(float %x)
   ret i64 %0
 }
 
-define i32 @testmswd(double %x) {
-; CHECK-LABEL: testmswd:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    pushq %rax
-; CHECK-NEXT:    .cfi_def_cfa_offset 16
-; CHECK-NEXT:    callq llrint
-; CHECK-NEXT:    # kill: def $eax killed $eax killed $rax
-; CHECK-NEXT:    popq %rcx
-; CHECK-NEXT:    .cfi_def_cfa_offset 8
-; CHECK-NEXT:    retq
-entry:
-  %0 = tail call i64 @llvm.llrint.f64(double %x)
-  %conv = trunc i64 %0 to i32
-  ret i32 %conv
-}
-
 define i64 @testmsxd(double %x) {
-; CHECK-LABEL: testmsxd:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    jmp llrint # TAILCALL
+; X86-LABEL: testmsxd:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    subl $8, %esp
+; X86-NEXT:    .cfi_def_cfa_offset 12
+; X86-NEXT:    fldl {{[0-9]+}}(%esp)
+; X86-NEXT:    fstpl (%esp)
+; X86-NEXT:    calll llrint
+; X86-NEXT:    addl $8, %esp
+; X86-NEXT:    .cfi_def_cfa_offset 4
+; X86-NEXT:    retl
+;
+; SSE2-LABEL: testmsxd:
+; SSE2:       # %bb.0: # %entry
+; SSE2-NEXT:    subl $8, %esp
+; SSE2-NEXT:    .cfi_def_cfa_offset 12
+; SSE2-NEXT:    movsd {{.*#+}} xmm0 = mem[0],zero
+; SSE2-NEXT:    movsd %xmm0, (%esp)
+; SSE2-NEXT:    calll llrint
+; SSE2-NEXT:    addl $8, %esp
+; SSE2-NEXT:    .cfi_def_cfa_offset 4
+; SSE2-NEXT:    retl
+;
+; X64-LABEL: testmsxd:
+; X64:       # %bb.0: # %entry
+; X64-NEXT:    jmp llrint # TAILCALL
 entry:
   %0 = tail call i64 @llvm.llrint.f64(double %x)
   ret i64 %0
 }
 
-define dso_local i32 @testmswl(x86_fp80 %x) {
-; CHECK-LABEL: testmswl:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    subq $24, %rsp
-; CHECK-NEXT:    .cfi_def_cfa_offset 32
-; CHECK-NEXT:    fldt {{[0-9]+}}(%rsp)
-; CHECK-NEXT:    fstpt (%rsp)
-; CHECK-NEXT:    callq llrintl
-; CHECK-NEXT:    # kill: def $eax killed $eax killed $rax
-; CHECK-NEXT:    addq $24, %rsp
-; CHECK-NEXT:    .cfi_def_cfa_offset 8
-; CHECK-NEXT:    retq
-entry:
-  %0 = tail call i64 @llvm.llrint.f80(x86_fp80 %x)
-  %conv = trunc i64 %0 to i32
-  ret i32 %conv
-}
-
-define dso_local i64 @testmsll(x86_fp80 %x) {
-; CHECK-LABEL: testmsll:
-; CHECK:       # %bb.0: # %entry
-; CHECK-NEXT:    jmp llrintl # TAILCALL
+define i64 @testmsll(x86_fp80 %x) {
+; X86-LABEL: testmsll:
+; X86:       # %bb.0: # %entry
+; X86-NEXT:    subl $12, %esp
+; X86-NEXT:    .cfi_def_cfa_offset 16
+; X86-NEXT:    fldt {{[0-9]+}}(%esp)
+; X86-NEXT:    fstpt (%esp)
+; X86-NEXT:    calll llrintl
+; X86-NEXT:    addl $12, %esp
+; X86-NEXT:    .cfi_def_cfa_offset 4
+; X86-NEXT:    retl
+;
+; SSE2-LABEL: testmsll:
+; SSE2:       # %bb.0: # %entry
+; SSE2-NEXT:    subl $12, %esp
+; SSE2-NEXT:    .cfi_def_cfa_offset 16
+; SSE2-NEXT:    fldt {{[0-9]+}}(%esp)
+; SSE2-NEXT:    fstpt (%esp)
+; SSE2-NEXT:    calll llrintl
+; SSE2-NEXT:    addl $12, %esp
+; SSE2-NEXT:    .cfi_def_cfa_offset 4
+; SSE2-NEXT:    retl
+;
+; X64-LABEL: testmsll:
+; X64:       # %bb.0: # %entry
+; X64-NEXT:    jmp llrintl # TAILCALL
 entry:
   %0 = tail call i64 @llvm.llrint.f80(x86_fp80 %x)
   ret i64 %0