1 files changed, 467 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/SystemZ/call-05.ll b/llvm/test/CodeGen/SystemZ/call-05.ll
new file mode 100644
index 00000000000..15704531d96
--- /dev/null
+++ b/llvm/test/CodeGen/SystemZ/call-05.ll
@@ -0,0 +1,467 @@
+; Test conditional sibling calls.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+
+@var = global i32 1;
+@fun_a = global void()* null;
+@fun_b = global void()* null;
+@fun_c = global void(i32)* null;
+
+; Check a conditional sibling call.
+define void @f1(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f1:
+; CHECK: crbl %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp slt i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call when there are two possibilities.
+define void @f2(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f2:
+; CHECK: crbl %r2, %r3, 0(%r1)
+; CHECK: br %r1
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %fun_b = load volatile void() *, void()** @fun_b;
+  %cond = icmp slt i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  tail call void %fun_b()
+  ret void
+}
+
+; Check a conditional sibling call with an argument - not supported.
+define void @f3(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f3:
+; CHECK: crjhe %r2, %r3
+; CHECK: br %r1
+; CHECK: br %r14
+  %fun_c = load volatile void(i32) *, void(i32)** @fun_c;
+  %cond = icmp slt i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_c(i32 1)
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - unsigned compare.
+define void @f4(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f4:
+; CHECK: clrbl %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp ult i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - 64-bit compare.
+define void @f5(i64 %val1, i64 %val2) {
+; CHECK-LABEL: f5:
+; CHECK: cgrbl %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp slt i64 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - unsigned 64-bit compare.
+define void @f6(i64 %val1, i64 %val2) {
+; CHECK-LABEL: f6:
+; CHECK: clgrbl %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp ult i64 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - less-equal compare.
+define void @f7(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f7:
+; CHECK: crble %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp sle i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - high compare.
+define void @f8(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f8:
+; CHECK: crbh %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp sgt i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - high-equal compare.
+define void @f9(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f9:
+; CHECK: crbhe %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp sge i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - equal compare.
+define void @f10(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f10:
+; CHECK: crbe %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp eq i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - unequal compare.
+define void @f11(i32 %val1, i32 %val2) {
+; CHECK-LABEL: f11:
+; CHECK: crblh %r2, %r3, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp ne i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate slt.
+define void @f12(i32 %val1) {
+; CHECK-LABEL: f12:
+; CHECK: cible %r2, 4, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp slt i32 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate sle.
+define void @f13(i32 %val1) {
+; CHECK-LABEL: f13:
+; CHECK: cible %r2, 5, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp sle i32 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate sgt.
+define void @f14(i32 %val1) {
+; CHECK-LABEL: f14:
+; CHECK: cibhe %r2, 6, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp sgt i32 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate sge.
+define void @f15(i32 %val1) {
+; CHECK-LABEL: f15:
+; CHECK: cibhe %r2, 5, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp sge i32 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate eq.
+define void @f16(i32 %val1) {
+; CHECK-LABEL: f16:
+; CHECK: cibe %r2, 5, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp eq i32 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate ne.
+define void @f17(i32 %val1) {
+; CHECK-LABEL: f17:
+; CHECK: ciblh %r2, 5, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp ne i32 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate ult.
+define void @f18(i32 %val1) {
+; CHECK-LABEL: f18:
+; CHECK: clible %r2, 4, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp ult i32 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate 64-bit slt.
+define void @f19(i64 %val1) {
+; CHECK-LABEL: f19:
+; CHECK: cgible %r2, 4, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp slt i64 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - immediate 64-bit ult.
+define void @f20(i64 %val1) {
+; CHECK-LABEL: f20:
+; CHECK: clgible %r2, 4, 0(%r1)
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = icmp ult i64 %val1, 5;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call to an argument - will fail due to
+; intervening lgr.
+define void @f21(i32 %val1, i32 %val2, void()* %fun) {
+; CHECK-LABEL: f21:
+; CHECK: crjhe %r2, %r3
+; CHECK: lgr %r1, %r4
+; CHECK: br %r1
+; CHECK: br %r14
+  %cond = icmp slt i32 %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - float olt compare.
+define void @f22(float %val1, float %val2) {
+; CHECK-LABEL: f22:
+; CHECK: cebr %f0, %f2
+; CHECK: blr %r1
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = fcmp olt float %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - float ult compare.
+define void @f23(float %val1, float %val2) {
+; CHECK-LABEL: f23:
+; CHECK: cebr %f0, %f2
+; CHECK: bnher %r1
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = fcmp ult float %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - float ord compare.
+define void @f24(float %val1, float %val2) {
+; CHECK-LABEL: f24:
+; CHECK: cebr %f0, %f2
+; CHECK: bnor %r1
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = fcmp ord float %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}
+
+; Check a conditional sibling call - float uno compare.
+define void @f25(float %val1, float %val2) {
+; CHECK-LABEL: f25:
+; CHECK: cebr %f0, %f2
+; CHECK: bor %r1
+; CHECK: br %r14
+  %fun_a = load volatile void() *, void()** @fun_a;
+  %cond = fcmp uno float %val1, %val2;
+  br i1 %cond, label %a, label %b;
+
+a:
+  tail call void %fun_a()
+  ret void
+
+b:
+  store i32 1, i32 *@var;
+  ret void
+}