1 files changed, 166 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Mips/llvm-ir/ret.ll b/llvm/test/CodeGen/Mips/llvm-ir/ret.ll
new file mode 100644
index 00000000000..784b6e19d9b
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/llvm-ir/ret.ll
@@ -0,0 +1,166 @@
+; Test all important variants of the 'ret' instruction.
+;
+; For non-void returns it is necessary to have something to return so we also
+; test constant generation here.
+;
+; We'll test pointer returns in a separate file since the relocation model
+; affects it.
+
+; RUN: llc -march=mips   -mcpu=mips32   < %s | FileCheck %s -check-prefix=ALL -check-prefix=GPR32 -check-prefix=NO-MTHC1
+; RUN: llc -march=mips   -mcpu=mips32r2 < %s | FileCheck %s -check-prefix=ALL -check-prefix=GPR32 -check-prefix=MTHC1
+; RUN: llc -march=mips64 -mcpu=mips4    < %s | FileCheck %s -check-prefix=ALL -check-prefix=GPR64 -check-prefix=DMTC1
+; RUN: llc -march=mips64 -mcpu=mips64   < %s | FileCheck %s -check-prefix=ALL -check-prefix=GPR64 -check-prefix=DMTC1
+; RUN: llc -march=mips64 -mcpu=mips64r2 < %s | FileCheck %s -check-prefix=ALL -check-prefix=GPR64 -check-prefix=DMTC1
+
+define void @ret_void() {
+; ALL-LABEL: ret_void:
+; ALL:           jr $ra
+  ret void
+}
+
+define i8 @ret_i8() {
+; ALL-LABEL: ret_i8:
+; ALL-DAG:       jr $ra
+; ALL-DAG:       addiu $2, $zero, 3
+  ret i8 3
+}
+
+define i16 @ret_i16_3() {
+; ALL-LABEL: ret_i16_3:
+; ALL-DAG:       jr $ra
+; ALL-DAG:       addiu $2, $zero, 3
+  ret i16 3
+}
+
+define i16 @ret_i16_256() {
+; ALL-LABEL: ret_i16_256:
+; ALL-DAG:       jr $ra
+; ALL-DAG:       addiu $2, $zero, 256
+  ret i16 256
+}
+
+define i16 @ret_i16_257() {
+; ALL-LABEL: ret_i16_257:
+; ALL-DAG:       jr $ra
+; ALL-DAG:       addiu $2, $zero, 257
+  ret i16 257
+}
+
+define i32 @ret_i32_257() {
+; ALL-LABEL: ret_i32_257:
+; ALL-DAG:       jr $ra
+; ALL-DAG:       addiu $2, $zero, 257
+  ret i32 257
+}
+
+define i32 @ret_i32_65536() {
+; ALL-LABEL: ret_i32_65536:
+; ALL-DAG:       jr $ra
+; ALL-DAG:       lui $2, 1
+  ret i32 65536
+}
+
+define i32 @ret_i32_65537() {
+; ALL-LABEL: ret_i32_65537:
+; ALL:           lui $[[T0:[0-9]+]], 1
+; ALL-DAG:       jr $ra
+; ALL-DAG:       ori $2, $[[T0]], 1
+  ret i32 65537
+}
+
+define i64 @ret_i64_65537() {
+; ALL-LABEL: ret_i64_65537:
+; ALL:           lui $[[T0:[0-9]+]], 1
+
+; GPR32-DAG:     ori $3, $[[T0]], 1
+; GPR32-DAG:     addiu $2, $zero, 0
+
+; GPR64-DAG:     daddiu $2, $[[T0]], 1
+
+; ALL-DAG:       jr $ra
+  ret i64 65537
+}
+
+define i64 @ret_i64_281479271677952() {
+; ALL-LABEL: ret_i64_281479271677952:
+; ALL-DAG:       lui $[[T0:[0-9]+]], 1
+
+; GPR32-DAG:     ori $2, $[[T0]], 1
+; GPR32-DAG:     addiu $3, $zero, 0
+
+; GPR64-DAG:     daddiu $[[T1:[0-9]+]], $[[T0]], 1
+; GPR64-DAG:     dsll $2, $[[T1]], 32
+
+; ALL-DAG:       jr $ra
+  ret i64 281479271677952
+}
+
+define i64 @ret_i64_281479271809026() {
+; ALL-LABEL: ret_i64_281479271809026:
+; GPR32-DAG:     lui $[[T0:[0-9]+]], 1
+; GPR32-DAG:     lui $[[T1:[0-9]+]], 2
+; GPR32-DAG:     ori $2, $[[T0]], 1
+; GPR32-DAG:     ori $3, $[[T1]], 2
+
+; GPR64-DAG:     ori  $[[T0:[0-9]+]], $zero, 32769
+; GPR64-DAG:     dsll $[[T1:[0-9]+]], $[[T0]], 16
+; GPR64-DAG:     daddiu $[[T0:[0-9]+]], $[[T0]], -32767
+; GPR64-DAG:     dsll $[[T1:[0-9]+]], $[[T0]], 17
+; GPR64-DAG:     daddiu $2, $[[T1]], 2
+
+; ALL-DAG:       jr $ra
+  ret i64 281479271809026
+}
+
+; TODO: f32
+define float @ret_float_0x0() {
+; ALL-LABEL: ret_float_0x0:
+
+; NO-MTHC1-DAG:  mtc1 $zero, $f0
+
+; MTHC1-DAG:     mtc1 $zero, $f0
+
+; DMTC-DAG:      dmtc1 $zero, $f0
+
+; ALL-DAG:       jr $ra
+  ret float 0x0000000000000000
+}
+
+define float @ret_float_0x3() {
+; ALL-LABEL: ret_float_0x3:
+
+; Use a constant pool
+; O32-DAG:       lwc1 $f0, %lo($CPI
+; N64-DAG:       lwc1 $f0, %got_ofst($CPI
+
+; ALL-DAG:       jr $ra
+
+; float constants are written as double constants
+  ret float 0x36b8000000000000
+}
+
+define double @ret_double_0x0() {
+; ALL-LABEL: ret_double_0x0:
+
+; NO-MTHC1-DAG:  mtc1 $zero, $f0
+; NO-MTHC1-DAG:  mtc1 $zero, $f1
+
+; MTHC1-DAG:     mtc1 $zero, $f0
+; MTHC1-DAG:     mthc1 $zero, $f0
+
+; DMTC-DAG:      dmtc1 $zero, $f0
+
+; ALL-DAG:       jr $ra
+  ret double 0x0000000000000000
+}
+
+define double @ret_double_0x3() {
+; ALL-LABEL: ret_double_0x3:
+
+; Use a constant pool
+; O32-DAG:       ldc1 $f0, %lo($CPI
+; N64-DAG:       ldc1 $f0, %got_ofst($CPI
+
+; ALL-DAG:       jr $ra
+  ret double 0x0000000000000003
+}