vendor/llvm/llvm-release_350-r216957

1 files changed, 91 insertions, 1 deletions

diff --git a/test/CodeGen/SystemZ/int-cmp-44.ll b/test/CodeGen/SystemZ/int-cmp-44.ll
index ae0133f10860..f065e6421295 100644
--- a/test/CodeGen/SystemZ/int-cmp-44.ll
+++ b/test/CodeGen/SystemZ/int-cmp-44.ll
@@ -1,4 +1,4 @@
-; Test that compares are ommitted if CC already has the right value
+; Test that compares are omitted if CC already has the right value
 ; (z10 version).
 ;
 ; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
@@ -797,3 +797,93 @@ store:
 exit:
   ret i32 %val
 }
+
+; Test f35 for in-register extensions.
+define i64 @f39(i64 %dummy, i64 %a, i64 *%dest) {
+; CHECK-LABEL: f39:
+; CHECK: ltgfr %r2, %r3
+; CHECK-NEXT: #APP
+; CHECK-NEXT: blah %r2
+; CHECK-NEXT: #NO_APP
+; CHECK-NEXT: jh .L{{.*}}
+; CHECK: br %r14
+entry:
+  %val = trunc i64 %a to i32
+  %ext = sext i32 %val to i64
+  call void asm sideeffect "blah $0", "{r2}"(i64 %ext)
+  %cmp = icmp sgt i64 %ext, 0
+  br i1 %cmp, label %exit, label %store
+
+store:
+  store i64 %ext, i64 *%dest
+  br label %exit
+
+exit:
+  ret i64 %ext
+}
+
+; ...and again with what InstCombine would produce for f40.
+define i64 @f40(i64 %dummy, i64 %a, i64 *%dest) {
+; CHECK-LABEL: f40:
+; CHECK: ltgfr %r2, %r3
+; CHECK-NEXT: #APP
+; CHECK-NEXT: blah %r2
+; CHECK-NEXT: #NO_APP
+; CHECK-NEXT: jh .L{{.*}}
+; CHECK: br %r14
+entry:
+  %shl = shl i64 %a, 32
+  %ext = ashr i64 %shl, 32
+  call void asm sideeffect "blah $0", "{r2}"(i64 %ext)
+  %cmp = icmp sgt i64 %shl, 0
+  br i1 %cmp, label %exit, label %store
+
+store:
+  store i64 %ext, i64 *%dest
+  br label %exit
+
+exit:
+  ret i64 %ext
+}
+
+; Try a form of f7 in which the subtraction operands are compared directly.
+define i32 @f41(i32 %a, i32 %b, i32 *%dest) {
+; CHECK-LABEL: f41:
+; CHECK: s %r2, 0(%r4)
+; CHECK-NEXT: jne .L{{.*}}
+; CHECK: br %r14
+entry:
+  %cur = load i32 *%dest
+  %res = sub i32 %a, %cur
+  %cmp = icmp ne i32 %a, %cur
+  br i1 %cmp, label %exit, label %store
+
+store:
+  store i32 %b, i32 *%dest
+  br label %exit
+
+exit:
+  ret i32 %res
+}
+
+; A version of f32 that tests the unextended value.
+define i64 @f42(i64 %base, i64 %index, i64 *%dest) {
+; CHECK-LABEL: f42:
+; CHECK: ltgf %r2, 0({{%r2,%r3|%r3,%r2}})
+; CHECK-NEXT: jh .L{{.*}}
+; CHECK: br %r14
+entry:
+  %add = add i64 %base, %index
+  %ptr = inttoptr i64 %add to i32 *
+  %val = load i32 *%ptr
+  %res = sext i32 %val to i64
+  %cmp = icmp sgt i32 %val, 0
+  br i1 %cmp, label %exit, label %store
+
+store:
+  store i64 %res, i64 *%dest
+  br label %exit
+
+exit:
+  ret i64 %res
+}