[mips] Support micromips attribute passed by front-end

This patch adds handling of the `micromips` and `nomicromips` attributes
passed by front-end. The patch depends on D33363.

Differential revision: https://reviews.llvm.org/D33364

llvm-svn: 303545

1 files changed, 39 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/Mips/micromips-attr.ll b/llvm/test/CodeGen/Mips/micromips-attr.ll
new file mode 100644
index 00000000000..78bcc04a9b0
--- /dev/null
+++ b/llvm/test/CodeGen/Mips/micromips-attr.ll
@@ -0,0 +1,39 @@
+; RUN: llc -march=mips -mcpu=mips32 --mattr=-micromips < %s | FileCheck %s 
+
+define void @foo() #0 {
+entry:
+  ret void
+}
+; CHECK:        .set    micromips
+; CHECK-NEXT:   .set    nomips16
+; CHECK-NEXT:   .ent    foo
+; CHECK-NEXT: foo:
+
+define void @bar() #1 {
+entry:
+  ret void
+}
+; CHECK:        .set    nomicromips
+; CHECK-NEXT:   .set    nomips16
+; CHECK-NEXT:   .ent    bar
+; CHECK-NEXT: bar:
+
+attributes #0 = {
+  nounwind "micromips"
+  "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false"
+  "less-precise-fpmad"="false" "no-frame-pointer-elim"="false"
+  "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false"
+  "no-signed-zeros-fp-math"="false" "no-trapping-math"="false"
+  "stack-protector-buffer-size"="8" "unsafe-fp-math"="false"
+  "use-soft-float"="false"
+}
+
+attributes #1 = {
+  nounwind
+  "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false"
+  "less-precise-fpmad"="false" "no-frame-pointer-elim"="false"
+  "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false"
+  "no-signed-zeros-fp-math"="false" "no-trapping-math"="false"
+  "stack-protector-buffer-size"="8" "unsafe-fp-math"="false"
+  "use-soft-float"="false"
+}