[SelectionDAGBuilder] Make sure DemoteReg ends up in right reg-class.

[oota-llvm.git] / test / CodeGen / SystemZ / fp-div-02.ll

diff --git a/test/CodeGen/SystemZ/fp-div-02.ll b/test/CodeGen/SystemZ/fp-div-02.ll
index c5cae15a824b2ec78566bebe8dc102ad04a12103..f120e7c923dc6688e5e6c3e00bc2bdedab414b8d 100644 (file)
--- a/test/CodeGen/SystemZ/fp-div-02.ll
+++ b/test/CodeGen/SystemZ/fp-div-02.ll
@@ -1,10 +1,14 @@
 ; Test 64-bit floating-point division.
 ;
-; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 \
+; RUN:   | FileCheck -check-prefix=CHECK -check-prefix=CHECK-SCALAR %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
+
+declare double @foo()
 
 ; Check register division.
 define double @f1(double %f1, double %f2) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
 ; CHECK: ddbr %f0, %f2
 ; CHECK: br %r14
   %res = fdiv double %f1, %f2
@@ -13,21 +17,21 @@ define double @f1(double %f1, double %f2) {
 
 ; Check the low end of the DDB range.
 define double @f2(double %f1, double *%ptr) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
 ; CHECK: ddb %f0, 0(%r2)
 ; CHECK: br %r14
-  %f2 = load double *%ptr
+  %f2 = load double , double *%ptr
   %res = fdiv double %f1, %f2
   ret double %res
 }
 
 ; Check the high end of the aligned DDB range.
 define double @f3(double %f1, double *%base) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
 ; CHECK: ddb %f0, 4088(%r2)
 ; CHECK: br %r14
-  %ptr = getelementptr double *%base, i64 511
-  %f2 = load double *%ptr
+  %ptr = getelementptr double, double *%base, i64 511
+  %f2 = load double , double *%ptr
   %res = fdiv double %f1, %f2
   ret double %res
 }
@@ -35,37 +39,83 @@ define double @f3(double %f1, double *%base) {
 ; Check the next doubleword up, which needs separate address logic.
 ; Other sequences besides this one would be OK.
 define double @f4(double %f1, double *%base) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
 ; CHECK: aghi %r2, 4096
 ; CHECK: ddb %f0, 0(%r2)
 ; CHECK: br %r14
-  %ptr = getelementptr double *%base, i64 512
-  %f2 = load double *%ptr
+  %ptr = getelementptr double, double *%base, i64 512
+  %f2 = load double , double *%ptr
   %res = fdiv double %f1, %f2
   ret double %res
 }
 
 ; Check negative displacements, which also need separate address logic.
 define double @f5(double %f1, double *%base) {
-; CHECK: f5:
+; CHECK-LABEL: f5:
 ; CHECK: aghi %r2, -8
 ; CHECK: ddb %f0, 0(%r2)
 ; CHECK: br %r14
-  %ptr = getelementptr double *%base, i64 -1
-  %f2 = load double *%ptr
+  %ptr = getelementptr double, double *%base, i64 -1
+  %f2 = load double , double *%ptr
   %res = fdiv double %f1, %f2
   ret double %res
 }
 
 ; Check that DDB allows indices.
 define double @f6(double %f1, double *%base, i64 %index) {
-; CHECK: f6:
+; CHECK-LABEL: f6:
 ; CHECK: sllg %r1, %r3, 3
 ; CHECK: ddb %f0, 800(%r1,%r2)
 ; CHECK: br %r14
-  %ptr1 = getelementptr double *%base, i64 %index
-  %ptr2 = getelementptr double *%ptr1, i64 100
-  %f2 = load double *%ptr2
+  %ptr1 = getelementptr double, double *%base, i64 %index
+  %ptr2 = getelementptr double, double *%ptr1, i64 100
+  %f2 = load double , double *%ptr2
   %res = fdiv double %f1, %f2
   ret double %res
 }
+
+; Check that divisions of spilled values can use DDB rather than DDBR.
+define double @f7(double *%ptr0) {
+; CHECK-LABEL: f7:
+; CHECK: brasl %r14, foo@PLT
+; CHECK-SCALAR: ddb %f0, 160(%r15)
+; CHECK: br %r14
+  %ptr1 = getelementptr double, double *%ptr0, i64 2
+  %ptr2 = getelementptr double, double *%ptr0, i64 4
+  %ptr3 = getelementptr double, double *%ptr0, i64 6
+  %ptr4 = getelementptr double, double *%ptr0, i64 8
+  %ptr5 = getelementptr double, double *%ptr0, i64 10
+  %ptr6 = getelementptr double, double *%ptr0, i64 12
+  %ptr7 = getelementptr double, double *%ptr0, i64 14
+  %ptr8 = getelementptr double, double *%ptr0, i64 16
+  %ptr9 = getelementptr double, double *%ptr0, i64 18
+  %ptr10 = getelementptr double, double *%ptr0, i64 20
+
+  %val0 = load double , double *%ptr0
+  %val1 = load double , double *%ptr1
+  %val2 = load double , double *%ptr2
+  %val3 = load double , double *%ptr3
+  %val4 = load double , double *%ptr4
+  %val5 = load double , double *%ptr5
+  %val6 = load double , double *%ptr6
+  %val7 = load double , double *%ptr7
+  %val8 = load double , double *%ptr8
+  %val9 = load double , double *%ptr9
+  %val10 = load double , double *%ptr10
+
+  %ret = call double @foo()
+
+  %div0 = fdiv double %ret, %val0
+  %div1 = fdiv double %div0, %val1
+  %div2 = fdiv double %div1, %val2
+  %div3 = fdiv double %div2, %val3
+  %div4 = fdiv double %div3, %val4
+  %div5 = fdiv double %div4, %val5
+  %div6 = fdiv double %div5, %val6
+  %div7 = fdiv double %div6, %val7
+  %div8 = fdiv double %div7, %val8
+  %div9 = fdiv double %div8, %val9
+  %div10 = fdiv double %div9, %val10
+
+  ret double %div10
+}