Add some testing for thumb1 and thumb2 inline asm immediate constraints

and fix a couple of bugs on inspection.

Also fixes PR26061.

llvm-svn: 257122

2 files changed, 51 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/ARM/inlineasm-imm-thumb.ll b/llvm/test/CodeGen/ARM/inlineasm-imm-thumb.ll
new file mode 100644
index 00000000000..80be870743f
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/inlineasm-imm-thumb.ll
@@ -0,0 +1,20 @@
+; RUN: llc -mtriple=thumbv5-none-linux-gnueabi -no-integrated-as %s -o /dev/null
+
+; Test thumb-mode "I" constraint, for any Data Processing immediate.
+define void @testI() {
+	tail call void asm sideeffect ".word $0", "I"( i32 255 ) nounwind
+	ret void
+}
+
+; Test thumb-mode "J" constraint, for compatibility with unknown use in GCC.
+define void @testJ() {
+	tail call void asm sideeffect ".word $0", "J"( i32 -254 ) nounwind
+	ret void
+}
+
+; Test thumb-mode "L" constraint, for negated Data Processing immediates.
+define void @testL() {
+	tail call void asm sideeffect ".word $0", "L"( i32 -7 ) nounwind
+	ret void
+}
+
diff --git a/llvm/test/CodeGen/ARM/inlineasm-imm-thumb2.ll b/llvm/test/CodeGen/ARM/inlineasm-imm-thumb2.ll
new file mode 100644
index 00000000000..c54f3b8aa5f
--- /dev/null
+++ b/llvm/test/CodeGen/ARM/inlineasm-imm-thumb2.ll
@@ -0,0 +1,31 @@
+; RUN: llc -mtriple=thumbv7-linux-gnu -no-integrated-as %s -o /dev/null
+
+; Test thumb2-mode "I" constraint, for any Data Processing immediate.
+define i32 @testI(i32 %x) {
+	%y = call i32 asm "add $0, $1, $2", "=r,r,I"( i32 %x, i32 65280 ) nounwind
+	ret i32 %y
+}
+
+; Test thumb2-mode "J" constraint, for compatibility with unknown use in GCC.
+define void @testJ() {
+	tail call void asm sideeffect ".word $0", "J"( i32 4080 ) nounwind
+	ret void
+}
+
+; Test thumb2-mode "K" constraint, for bitwise inverted Data Processing immediates.
+define void @testK() {
+	tail call void asm sideeffect ".word $0", "K"( i32 16777215 ) nounwind
+	ret void
+}
+
+; Test thumb2-mode "L" constraint, for negated Data Processing immediates.
+define void @testL() {
+	tail call void asm sideeffect ".word $0", "L"( i32 -65280 ) nounwind
+	ret void
+}
+
+; Test thumb2-mode "M" constraint, for value between 0 and 32.
+define i32 @testM(i32 %x) {
+	%y = call i32 asm "lsl $0, $1, $2", "=r,r,M"( i32 %x, i32 31 ) nounwind
+	ret i32 %y
+}