[AVR] Fix and clean up the inline assembly tests

There was a bug where we would hit an assertion if 'Q' was used as a
constraint.

I also removed hardcoded register names to prefer regexes so the tests
don't break when the register allocator changes.

llvm-svn: 289325

1 files changed, 135 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/AVR/inline-asm/multibyte.ll b/llvm/test/CodeGen/AVR/inline-asm/multibyte.ll
new file mode 100644
index 00000000000..34cdf5d006e
--- /dev/null
+++ b/llvm/test/CodeGen/AVR/inline-asm/multibyte.ll
@@ -0,0 +1,135 @@
+; RUN: llc < %s -march=avr | FileCheck %s
+; XFAIL: *
+
+; Multibyte references
+
+; CHECK-LABEL: multibyte_i16
+define void @multibyte_i16(i16 %a) {
+entry:
+; CHECK: instr r24 r25
+  call void asm sideeffect "instr ${0:A} ${0:B}", "r"(i16 %a)
+; CHECK: instr r25 r24
+  call void asm sideeffect "instr ${0:B} ${0:A}", "r"(i16 %a)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_i32
+define void @multibyte_i32(i32 %a) {
+entry:
+; CHECK: instr r22 r23 r24 r25
+  call void asm sideeffect "instr ${0:A} ${0:B} ${0:C} ${0:D}", "r"(i32 %a)
+; CHECK: instr r25 r24 r23 r22
+  call void asm sideeffect "instr ${0:D} ${0:C} ${0:B} ${0:A}", "r"(i32 %a)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_alternative_name
+define void @multibyte_alternative_name(i16* %p) {
+entry:
+; CHECK: instr Z
+  call void asm sideeffect "instr ${0:a}", "e" (i16* %p)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_a_i32
+define void @multibyte_a_i32() {
+entry:
+  %a = alloca i32
+  %0 = load i32, i32* %a
+; CHECK: instr r20 r21 r22 r23
+  call void asm sideeffect "instr ${0:A} ${0:B} ${0:C} ${0:D}", "a"(i32 %0)
+  ret void
+}
+
+@c = internal global i32 0
+
+; CHECK-LABEL: multibyte_b_i32
+define void @multibyte_b_i32() {
+entry:
+  %0 = load i32, i32* @c
+; CHECK: instr r28 r29 r30 r31
+  call void asm sideeffect "instr ${0:A} ${0:B} ${0:C} ${0:D}", "b"(i32 %0)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_d_i32
+define void @multibyte_d_i32() {
+entry:
+  %a = alloca i32
+  %0 = load i32, i32* %a
+; CHECK: instr r18 r19 r24 r25
+  call void asm sideeffect "instr ${0:A} ${0:B} ${0:C} ${0:D}", "d"(i32 %0)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_e_i32
+define void @multibyte_e_i32() {
+entry:
+  %a = alloca i32
+  %0 = load i32, i32* %a
+; CHECK: instr r26 r27 r30 r31
+  call void asm sideeffect "instr ${0:A} ${0:B} ${0:C} ${0:D}", "e"(i32 %0)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_l_i32
+define void @multibyte_l_i32() {
+entry:
+  %a = alloca i32
+  %0 = load i32, i32* %a
+; CHECK: instr r12 r13 r14 r15
+  call void asm sideeffect "instr ${0:A} ${0:B} ${0:C} ${0:D}", "l"(i32 %0)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_a_i16
+define void @multibyte_a_i16() {
+entry:
+  %a = alloca i16
+  %0 = load i16, i16* %a
+; CHECK: instr r22 r23
+  call void asm sideeffect "instr ${0:A} ${0:B}", "a"(i16 %0)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_b_i16
+define void @multibyte_b_i16() {
+entry:
+  %a = alloca i16
+  %0 = load i16, i16* %a
+; CHECK: instr r30 r31
+  call void asm sideeffect "instr ${0:A} ${0:B}", "b"(i16 %0)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_d_i16
+define void @multibyte_d_i16() {
+entry:
+  %a = alloca i16
+  %0 = load i16, i16* %a
+; CHECK: instr r24 r25
+  call void asm sideeffect "instr ${0:A} ${0:B}", "d"(i16 %0)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_e_i16
+define void @multibyte_e_i16() {
+entry:
+  %a = alloca i16
+  %0 = load i16, i16* %a
+; CHECK: instr r30 r31
+  call void asm sideeffect "instr ${0:A} ${0:B}", "e"(i16 %0)
+  ret void
+}
+
+; CHECK-LABEL: multibyte_l_i16
+define void @multibyte_l_i16() {
+entry:
+  %a = alloca i16
+  %0 = load i16, i16* %a
+; CHECK: instr r14 r15
+  call void asm sideeffect "instr ${0:A} ${0:B}", "l"(i16 %0)
+  ret void
+}
+
+