1 files changed, 75 insertions, 14 deletions
diff --git a/test/CodeGen/SystemZ/int-div-01.ll b/test/CodeGen/SystemZ/int-div-01.ll
index 492ece91497e3..2c21186e33693 100644
--- a/test/CodeGen/SystemZ/int-div-01.ll
+++ b/test/CodeGen/SystemZ/int-div-01.ll
@@ -2,9 +2,11 @@
 ;
 ; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
 
+declare i32 @foo()
+
 ; Test register division.  The result is in the second of the two registers.
 define void @f1(i32 *%dest, i32 %a, i32 %b) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
 ; CHECK: lgfr %r1, %r3
 ; CHECK: dsgfr %r0, %r4
 ; CHECK: st %r1, 0(%r2)
@@ -16,7 +18,7 @@ define void @f1(i32 *%dest, i32 %a, i32 %b) {
 
 ; Test register remainder.  The result is in the first of the two registers.
 define void @f2(i32 *%dest, i32 %a, i32 %b) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
 ; CHECK: lgfr %r1, %r3
 ; CHECK: dsgfr %r0, %r4
 ; CHECK: st %r0, 0(%r2)
@@ -28,7 +30,7 @@ define void @f2(i32 *%dest, i32 %a, i32 %b) {
 
 ; Test that division and remainder use a single instruction.
 define i32 @f3(i32 %dummy, i32 %a, i32 %b) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
 ; CHECK-NOT: %r2
 ; CHECK: lgfr %r3, %r3
 ; CHECK-NOT: %r2
@@ -45,7 +47,7 @@ define i32 @f3(i32 %dummy, i32 %a, i32 %b) {
 ; Check that the sign extension of the dividend is elided when the argument
 ; is already sign-extended.
 define i32 @f4(i32 %dummy, i32 signext %a, i32 %b) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
 ; CHECK-NOT: {{%r[234]}}
 ; CHECK: dsgfr %r2, %r4
 ; CHECK-NOT: dsgfr
@@ -59,7 +61,7 @@ define i32 @f4(i32 %dummy, i32 signext %a, i32 %b) {
 
 ; Test that memory dividends are loaded using sign extension (LGF).
 define i32 @f5(i32 %dummy, i32 *%src, i32 %b) {
-; CHECK: f5:
+; CHECK-LABEL: f5:
 ; CHECK-NOT: %r2
 ; CHECK: lgf %r3, 0(%r3)
 ; CHECK-NOT: %r2
@@ -76,7 +78,7 @@ define i32 @f5(i32 %dummy, i32 *%src, i32 %b) {
 
 ; Test memory division with no displacement.
 define void @f6(i32 *%dest, i32 %a, i32 *%src) {
-; CHECK: f6:
+; CHECK-LABEL: f6:
 ; CHECK: lgfr %r1, %r3
 ; CHECK: dsgf %r0, 0(%r4)
 ; CHECK: st %r1, 0(%r2)
@@ -89,7 +91,7 @@ define void @f6(i32 *%dest, i32 %a, i32 *%src) {
 
 ; Test memory remainder with no displacement.
 define void @f7(i32 *%dest, i32 %a, i32 *%src) {
-; CHECK: f7:
+; CHECK-LABEL: f7:
 ; CHECK: lgfr %r1, %r3
 ; CHECK: dsgf %r0, 0(%r4)
 ; CHECK: st %r0, 0(%r2)
@@ -102,7 +104,7 @@ define void @f7(i32 *%dest, i32 %a, i32 *%src) {
 
 ; Test both memory division and memory remainder.
 define i32 @f8(i32 %dummy, i32 %a, i32 *%src) {
-; CHECK: f8:
+; CHECK-LABEL: f8:
 ; CHECK-NOT: %r2
 ; CHECK: lgfr %r3, %r3
 ; CHECK-NOT: %r2
@@ -119,7 +121,7 @@ define i32 @f8(i32 %dummy, i32 %a, i32 *%src) {
 
 ; Check the high end of the DSGF range.
 define i32 @f9(i32 %dummy, i32 %a, i32 *%src) {
-; CHECK: f9:
+; CHECK-LABEL: f9:
 ; CHECK: dsgf %r2, 524284(%r4)
 ; CHECK: br %r14
   %ptr = getelementptr i32 *%src, i64 131071
@@ -131,7 +133,7 @@ define i32 @f9(i32 %dummy, i32 %a, i32 *%src) {
 ; Check the next word up, which needs separate address logic.
 ; Other sequences besides this one would be OK.
 define i32 @f10(i32 %dummy, i32 %a, i32 *%src) {
-; CHECK: f10:
+; CHECK-LABEL: f10:
 ; CHECK: agfi %r4, 524288
 ; CHECK: dsgf %r2, 0(%r4)
 ; CHECK: br %r14
@@ -143,7 +145,7 @@ define i32 @f10(i32 %dummy, i32 %a, i32 *%src) {
 
 ; Check the high end of the negative aligned DSGF range.
 define i32 @f11(i32 %dummy, i32 %a, i32 *%src) {
-; CHECK: f11:
+; CHECK-LABEL: f11:
 ; CHECK: dsgf %r2, -4(%r4)
 ; CHECK: br %r14
   %ptr = getelementptr i32 *%src, i64 -1
@@ -154,7 +156,7 @@ define i32 @f11(i32 %dummy, i32 %a, i32 *%src) {
 
 ; Check the low end of the DSGF range.
 define i32 @f12(i32 %dummy, i32 %a, i32 *%src) {
-; CHECK: f12:
+; CHECK-LABEL: f12:
 ; CHECK: dsgf %r2, -524288(%r4)
 ; CHECK: br %r14
   %ptr = getelementptr i32 *%src, i64 -131072
@@ -166,7 +168,7 @@ define i32 @f12(i32 %dummy, i32 %a, i32 *%src) {
 ; Check the next word down, which needs separate address logic.
 ; Other sequences besides this one would be OK.
 define i32 @f13(i32 %dummy, i32 %a, i32 *%src) {
-; CHECK: f13:
+; CHECK-LABEL: f13:
 ; CHECK: agfi %r4, -524292
 ; CHECK: dsgf %r2, 0(%r4)
 ; CHECK: br %r14
@@ -178,7 +180,7 @@ define i32 @f13(i32 %dummy, i32 %a, i32 *%src) {
 
 ; Check that DSGF allows an index.
 define i32 @f14(i32 %dummy, i32 %a, i64 %src, i64 %index) {
-; CHECK: f14:
+; CHECK-LABEL: f14:
 ; CHECK: dsgf %r2, 524287(%r5,%r4)
 ; CHECK: br %r14
   %add1 = add i64 %src, %index
@@ -188,3 +190,62 @@ define i32 @f14(i32 %dummy, i32 %a, i64 %src, i64 %index) {
   %rem = srem i32 %a, %b
   ret i32 %rem
 }
+
+; Make sure that we still use DSGFR rather than DSGR in cases where
+; a load and division cannot be combined.
+define void @f15(i32 *%dest, i32 *%src) {
+; CHECK-LABEL: f15:
+; CHECK: l [[B:%r[0-9]+]], 0(%r3)
+; CHECK: brasl %r14, foo@PLT
+; CHECK: lgfr %r1, %r2
+; CHECK: dsgfr %r0, [[B]]
+; CHECK: br %r14
+  %b = load i32 *%src
+  %a = call i32 @foo()
+  %div = sdiv i32 %a, %b
+  store i32 %div, i32 *%dest
+  ret void
+}
+
+; Check that divisions of spilled values can use DSGF rather than DSGFR.
+define i32 @f16(i32 *%ptr0) {
+; CHECK-LABEL: f16:
+; CHECK: brasl %r14, foo@PLT
+; CHECK: dsgf {{%r[0-9]+}}, 16{{[04]}}(%r15)
+; CHECK: br %r14
+  %ptr1 = getelementptr i32 *%ptr0, i64 2
+  %ptr2 = getelementptr i32 *%ptr0, i64 4
+  %ptr3 = getelementptr i32 *%ptr0, i64 6
+  %ptr4 = getelementptr i32 *%ptr0, i64 8
+  %ptr5 = getelementptr i32 *%ptr0, i64 10
+  %ptr6 = getelementptr i32 *%ptr0, i64 12
+  %ptr7 = getelementptr i32 *%ptr0, i64 14
+  %ptr8 = getelementptr i32 *%ptr0, i64 16
+  %ptr9 = getelementptr i32 *%ptr0, i64 18
+
+  %val0 = load i32 *%ptr0
+  %val1 = load i32 *%ptr1
+  %val2 = load i32 *%ptr2
+  %val3 = load i32 *%ptr3
+  %val4 = load i32 *%ptr4
+  %val5 = load i32 *%ptr5
+  %val6 = load i32 *%ptr6
+  %val7 = load i32 *%ptr7
+  %val8 = load i32 *%ptr8
+  %val9 = load i32 *%ptr9
+
+  %ret = call i32 @foo()
+
+  %div0 = sdiv i32 %ret, %val0
+  %div1 = sdiv i32 %div0, %val1
+  %div2 = sdiv i32 %div1, %val2
+  %div3 = sdiv i32 %div2, %val3
+  %div4 = sdiv i32 %div3, %val4
+  %div5 = sdiv i32 %div4, %val5
+  %div6 = sdiv i32 %div5, %val6
+  %div7 = sdiv i32 %div6, %val7
+  %div8 = sdiv i32 %div7, %val8
+  %div9 = sdiv i32 %div8, %val9
+
+  ret i32 %div9
+}