[SystemZ] Allocate a second register scavenging slot
This is another prerequisite for frame-to-frame MVC copies.
I'll commit the patch that makes use of the slot separately.
The downside of trying to test many corner cases with each of the
available addressing modes is that a fair few tests need to account
for the new frame layout. I do still think it's useful to have all
these tests though, since it's something that wouldn't get much coverage
otherwise.
llvm-svn: 185698
diff --git a/llvm/test/CodeGen/SystemZ/frame-07.ll b/llvm/test/CodeGen/SystemZ/frame-07.ll
index cfe9f86..b5999ae 100644
--- a/llvm/test/CodeGen/SystemZ/frame-07.ll
+++ b/llvm/test/CodeGen/SystemZ/frame-07.ll
@@ -5,9 +5,9 @@
; Test a frame size that requires some FPRs to be saved and loaded using
; the 20-bit STDY and LDY while others can use the 12-bit STD and LD.
-; The frame is big enough to require an emergency spill slot at 160(%r15),
+; The frame is big enough to require two emergency spill slots at 160(%r15),
; as well as the 8 FPR save slots. Get a frame of size 4128 by allocating
-; (4128 - 168 - 8 * 8) / 8 = 487 extra doublewords.
+; (4128 - 176 - 8 * 8) / 8 = 486 extra doublewords.
define void @f1(double *%ptr, i64 %x) {
; CHECK-NOFP: f1:
; CHECK-NOFP: aghi %r15, -4128
@@ -65,8 +65,8 @@
; CHECK-FP: ld %f15, 4064(%r11)
; CHECK-FP: lmg %r11, %r15, 4216(%r11)
; CHECK-FP: br %r14
- %y = alloca [487 x i64], align 8
- %elem = getelementptr inbounds [487 x i64]* %y, i64 0, i64 0
+ %y = alloca [486 x i64], align 8
+ %elem = getelementptr inbounds [486 x i64]* %y, i64 0, i64 0
store volatile i64 %x, i64* %elem
%l0 = load volatile double *%ptr
%l1 = load volatile double *%ptr
@@ -127,7 +127,7 @@
; good optimisation but is really a different test.
;
; As above, get a frame of size 524320 by allocating
-; (524320 - 168 - 8 * 8) / 8 = 65511 extra doublewords.
+; (524320 - 176 - 8 * 8) / 8 = 65510 extra doublewords.
define void @f2(double *%ptr, i64 %x) {
; CHECK-NOFP: f2:
; CHECK-NOFP: agfi %r15, -524320
@@ -194,8 +194,8 @@
; CHECK-FP: aghi %r11, 128
; CHECK-FP: lmg %r11, %r15, 524280(%r11)
; CHECK-FP: br %r14
- %y = alloca [65511 x i64], align 8
- %elem = getelementptr inbounds [65511 x i64]* %y, i64 0, i64 0
+ %y = alloca [65510 x i64], align 8
+ %elem = getelementptr inbounds [65510 x i64]* %y, i64 0, i64 0
store volatile i64 %x, i64* %elem
%l0 = load volatile double *%ptr
%l1 = load volatile double *%ptr