[mips] Test case for r182042. Add comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182044 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 48 insertions, 0 deletions

diff --git a/test/CodeGen/Mips/int-to-float-conversion.ll b/test/CodeGen/Mips/int-to-float-conversion.ll
new file mode 100644
index 0000000..2a7dfdd
--- /dev/null
+++ b/test/CodeGen/Mips/int-to-float-conversion.ll
@@ -0,0 +1,48 @@
+; RUN: llc -march=mipsel < %s | FileCheck %s -check-prefix=32
+; RUN: llc -march=mips64el -mcpu=mips64 < %s | FileCheck %s -check-prefix=64
+
+@i1 = global [3 x i32] [i32 1, i32 2, i32 3], align 4
+@i3 = common global i32* null, align 4
+
+; 32: test_float_int_:
+; 32: mtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]]
+; 32: cvt.s.w $f{{[0-9]+}}, $f[[R0]]
+
+define float @test_float_int_(i32 %a) {
+entry:
+  %conv = sitofp i32 %a to float
+  ret float %conv
+}
+
+; 32: test_double_int_:
+; 32: mtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]]
+; 32: cvt.d.w $f{{[0-9]+}}, $f[[R0]]
+; 64: test_double_int_:
+; 64: mtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]]
+; 64: cvt.d.w $f{{[0-9]+}}, $f[[R0]]
+
+define double @test_double_int_(i32 %a) {
+entry:
+  %conv = sitofp i32 %a to double
+  ret double %conv
+}
+
+; 64: test_float_LL_:
+; 64: dmtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]]
+; 64: cvt.s.l $f{{[0-9]+}}, $f[[R0]]
+
+define float @test_float_LL_(i64 %a) {
+entry:
+  %conv = sitofp i64 %a to float
+  ret float %conv
+}
+
+; 64: test_double_LL_:
+; 64: dmtc1 ${{[0-9]+}}, $f[[R0:[0-9]+]]
+; 64: cvt.d.l $f{{[0-9]+}}, $f[[R0]]
+
+define double @test_double_LL_(i64 %a) {
+entry:
+  %conv = sitofp i64 %a to double
+  ret double %conv
+}