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

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

diff --git a/test/CodeGen/SystemZ/fp-cmp-02.ll b/test/CodeGen/SystemZ/fp-cmp-02.ll
index 309d12e824afa1aab89f74e4c3953a81f2ccedab..0808ddd8db483df62f50483128a0a9bcb132cfc3 100644 (file)
--- a/test/CodeGen/SystemZ/fp-cmp-02.ll
+++ b/test/CodeGen/SystemZ/fp-cmp-02.ll
@@ -1,6 +1,10 @@
-; Test 64-bit floating-point comparison.
+; Test 64-bit floating-point comparison.  The tests assume a z10 implementation
+; of select, using conditional branches rather than LOCGR.
 ;
-; 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 -verify-machineinstrs\
+; RUN:   | FileCheck -check-prefix=CHECK -check-prefix=CHECK-VECTOR %s
 
 declare double @foo()
 
@@ -8,8 +12,9 @@ declare double @foo()
 define i64 @f1(i64 %a, i64 %b, double %f1, double %f2) {
 ; CHECK-LABEL: f1:
 ; CHECK: cdbr %f0, %f2
-; CHECK-NEXT: je
-; CHECK: lgr %r2, %r3
+; CHECK-SCALAR-NEXT: je
+; CHECK-SCALAR: lgr %r2, %r3
+; CHECK-VECTOR-NEXT: locgrne %r2, %r3
 ; CHECK: br %r14
   %cond = fcmp oeq double %f1, %f2
   %res = select i1 %cond, i64 %a, i64 %b
@@ -20,10 +25,11 @@ define i64 @f1(i64 %a, i64 %b, double %f1, double %f2) {
 define i64 @f2(i64 %a, i64 %b, double %f1, double *%ptr) {
 ; CHECK-LABEL: f2:
 ; CHECK: cdb %f0, 0(%r4)
-; CHECK-NEXT: je
-; CHECK: lgr %r2, %r3
+; CHECK-SCALAR-NEXT: je
+; CHECK-SCALAR: lgr %r2, %r3
+; CHECK-VECTOR-NEXT: locgrne %r2, %r3
 ; CHECK: br %r14
-  %f2 = load double *%ptr
+  %f2 = load double , double *%ptr
   %cond = fcmp oeq double %f1, %f2
   %res = select i1 %cond, i64 %a, i64 %b
   ret i64 %res
@@ -33,11 +39,12 @@ define i64 @f2(i64 %a, i64 %b, double %f1, double *%ptr) {
 define i64 @f3(i64 %a, i64 %b, double %f1, double *%base) {
 ; CHECK-LABEL: f3:
 ; CHECK: cdb %f0, 4088(%r4)
-; CHECK-NEXT: je
-; CHECK: lgr %r2, %r3
+; CHECK-SCALAR-NEXT: je
+; CHECK-SCALAR: lgr %r2, %r3
+; CHECK-VECTOR-NEXT: locgrne %r2, %r3
 ; 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
   %cond = fcmp oeq double %f1, %f2
   %res = select i1 %cond, i64 %a, i64 %b
   ret i64 %res
@@ -49,11 +56,12 @@ define i64 @f4(i64 %a, i64 %b, double %f1, double *%base) {
 ; CHECK-LABEL: f4:
 ; CHECK: aghi %r4, 4096
 ; CHECK: cdb %f0, 0(%r4)
-; CHECK-NEXT: je
-; CHECK: lgr %r2, %r3
+; CHECK-SCALAR-NEXT: je
+; CHECK-SCALAR: lgr %r2, %r3
+; CHECK-VECTOR-NEXT: locgrne %r2, %r3
 ; 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
   %cond = fcmp oeq double %f1, %f2
   %res = select i1 %cond, i64 %a, i64 %b
   ret i64 %res
@@ -64,11 +72,12 @@ define i64 @f5(i64 %a, i64 %b, double %f1, double *%base) {
 ; CHECK-LABEL: f5:
 ; CHECK: aghi %r4, -8
 ; CHECK: cdb %f0, 0(%r4)
-; CHECK-NEXT: je
-; CHECK: lgr %r2, %r3
+; CHECK-SCALAR-NEXT: je
+; CHECK-SCALAR: lgr %r2, %r3
+; CHECK-VECTOR-NEXT: locgrne %r2, %r3
 ; 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
   %cond = fcmp oeq double %f1, %f2
   %res = select i1 %cond, i64 %a, i64 %b
   ret i64 %res
@@ -79,12 +88,13 @@ define i64 @f6(i64 %a, i64 %b, double %f1, double *%base, i64 %index) {
 ; CHECK-LABEL: f6:
 ; CHECK: sllg %r1, %r5, 3
 ; CHECK: cdb %f0, 800(%r1,%r4)
-; CHECK-NEXT: je
-; CHECK: lgr %r2, %r3
+; CHECK-SCALAR-NEXT: je
+; CHECK-SCALAR: lgr %r2, %r3
+; CHECK-VECTOR-NEXT: locgrne %r2, %r3
 ; 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
   %cond = fcmp oeq double %f1, %f2
   %res = select i1 %cond, i64 %a, i64 %b
   ret i64 %res
@@ -94,30 +104,30 @@ define i64 @f6(i64 %a, i64 %b, double %f1, double *%base, i64 %index) {
 define double @f7(double *%ptr0) {
 ; CHECK-LABEL: f7:
 ; CHECK: brasl %r14, foo@PLT
-; CHECK: cdb {{%f[0-9]+}}, 160(%r15)
+; CHECK-SCALAR: cdb {{%f[0-9]+}}, 160(%r15)
 ; CHECK: br %r14
-  %ptr1 = getelementptr double *%ptr0, i64 2
-  %ptr2 = getelementptr double *%ptr0, i64 4
-  %ptr3 = getelementptr double *%ptr0, i64 6
-  %ptr4 = getelementptr double *%ptr0, i64 8
-  %ptr5 = getelementptr double *%ptr0, i64 10
-  %ptr6 = getelementptr double *%ptr0, i64 12
-  %ptr7 = getelementptr double *%ptr0, i64 14
-  %ptr8 = getelementptr double *%ptr0, i64 16
-  %ptr9 = getelementptr double *%ptr0, i64 18
-  %ptr10 = getelementptr double *%ptr0, i64 20
+  %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 *%ptr0
-  %val1 = load double *%ptr1
-  %val2 = load double *%ptr2
-  %val3 = load double *%ptr3
-  %val4 = load double *%ptr4
-  %val5 = load double *%ptr5
-  %val6 = load double *%ptr6
-  %val7 = load double *%ptr7
-  %val8 = load double *%ptr8
-  %val9 = load double *%ptr9
-  %val10 = load double *%ptr10
+  %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()
 
@@ -151,11 +161,27 @@ define double @f7(double *%ptr0) {
 ; Check comparison with zero.
 define i64 @f8(i64 %a, i64 %b, double %f) {
 ; CHECK-LABEL: f8:
-; CHECK: ltdbr %f0, %f0
-; CHECK-NEXT: je
-; CHECK: lgr %r2, %r3
+; CHECK-SCALAR: ltdbr %f0, %f0
+; CHECK-SCALAR-NEXT: je
+; CHECK-SCALAR: lgr %r2, %r3
+; CHECK-VECTOR: ltdbr %f0, %f0
+; CHECK-VECTOR-NEXT: locgrne %r2, %r3
 ; CHECK: br %r14
   %cond = fcmp oeq double %f, 0.0
   %res = select i1 %cond, i64 %a, i64 %b
   ret i64 %res
 }
+
+; Check the comparison can be reversed if that allows CDB to be used,
+define i64 @f9(i64 %a, i64 %b, double %f2, double *%ptr) {
+; CHECK-LABEL: f9:
+; CHECK: cdb %f0, 0(%r4)
+; CHECK-SCALAR-NEXT: jl
+; CHECK-SCALAR: lgr %r2, %r3
+; CHECK-VECTOR-NEXT: locgrnl %r2, %r3
+; CHECK: br %r14
+  %f1 = load double , double *%ptr
+  %cond = fcmp ogt double %f1, %f2
+  %res = select i1 %cond, i64 %a, i64 %b
+  ret i64 %res
+}