1 files changed, 139 insertions, 0 deletions
diff --git a/test/CodeGen/SystemZ/int-cmp-33.ll b/test/CodeGen/SystemZ/int-cmp-33.ll
new file mode 100644
index 0000000..0144806
--- /dev/null
+++ b/test/CodeGen/SystemZ/int-cmp-33.ll
@@ -0,0 +1,139 @@
+; Test 32-bit unsigned comparisons between memory and a constant.
+;
+; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+
+; Check ordered comparisons with a constant near the low end of the unsigned
+; 16-bit range.
+define double @f1(double %a, double %b, i32 *%ptr) {
+; CHECK: f1:
+; CHECK: clfhsi 0(%r2), 1
+; CHECK-NEXT: j{{g?}}h
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %val = load i32 *%ptr
+  %cond = icmp ugt i32 %val, 1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check ordered comparisons with the high end of the unsigned 16-bit range.
+define double @f2(double %a, double %b, i32 *%ptr) {
+; CHECK: f2:
+; CHECK: clfhsi 0(%r2), 65535
+; CHECK-NEXT: j{{g?}}l
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %val = load i32 *%ptr
+  %cond = icmp ult i32 %val, 65535
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the next value up, which can't use CLFHSI.
+define double @f3(double %a, double %b, i32 *%ptr) {
+; CHECK: f3:
+; CHECK-NOT: clfhsi
+; CHECK: br %r14
+  %val = load i32 *%ptr
+  %cond = icmp ult i32 %val, 65536
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check equality comparisons with 32768, the lowest value for which
+; we prefer CLFHSI to CHSI.
+define double @f4(double %a, double %b, i32 *%ptr) {
+; CHECK: f4:
+; CHECK: clfhsi 0(%r2), 32768
+; CHECK-NEXT: j{{g?}}e
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %val = load i32 *%ptr
+  %cond = icmp eq i32 %val, 32768
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check equality comparisons with the high end of the unsigned 16-bit range.
+define double @f5(double %a, double %b, i32 *%ptr) {
+; CHECK: f5:
+; CHECK: clfhsi 0(%r2), 65535
+; CHECK-NEXT: j{{g?}}e
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %val = load i32 *%ptr
+  %cond = icmp eq i32 %val, 65535
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the next value up, which can't use CLFHSI.
+define double @f6(double %a, double %b, i32 *%ptr) {
+; CHECK: f6:
+; CHECK-NOT: clfhsi
+; CHECK: br %r14
+  %val = load i32 *%ptr
+  %cond = icmp eq i32 %val, 65536
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the high end of the CLFHSI range.
+define double @f7(double %a, double %b, i32 %i1, i32 *%base) {
+; CHECK: f7:
+; CHECK: clfhsi 4092(%r3), 1
+; CHECK-NEXT: j{{g?}}h
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %ptr = getelementptr i32 *%base, i64 1023
+  %val = load i32 *%ptr
+  %cond = icmp ugt i32 %val, 1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the next word up, which needs separate address logic,
+define double @f8(double %a, double %b, i32 *%base) {
+; CHECK: f8:
+; CHECK: aghi %r2, 4096
+; CHECK: clfhsi 0(%r2), 1
+; CHECK-NEXT: j{{g?}}h
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %ptr = getelementptr i32 *%base, i64 1024
+  %val = load i32 *%ptr
+  %cond = icmp ugt i32 %val, 1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check negative offsets, which also need separate address logic.
+define double @f9(double %a, double %b, i32 *%base) {
+; CHECK: f9:
+; CHECK: aghi %r2, -4
+; CHECK: clfhsi 0(%r2), 1
+; CHECK-NEXT: j{{g?}}h
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %ptr = getelementptr i32 *%base, i64 -1
+  %val = load i32 *%ptr
+  %cond = icmp ugt i32 %val, 1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check that CLFHSI does not allow indices.
+define double @f10(double %a, double %b, i64 %base, i64 %index) {
+; CHECK: f10:
+; CHECK: agr {{%r2, %r3|%r3, %r2}}
+; CHECK: clfhsi 0({{%r[23]}}), 1
+; CHECK-NEXT: j{{g?}}h
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %add = add i64 %base, %index
+  %ptr = inttoptr i64 %add to i32 *
+  %val = load i32 *%ptr
+  %cond = icmp ugt i32 %val, 1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}