-; Test zero extensions from a byte to an i32.
+; Test zero extensions from a byte to an i32. The tests here
+; assume z10 register pressure, without the high words being available.
;
-; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
+; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z10 | FileCheck %s
; Test register extension, starting with an i32.
define i32 @f1(i32 %a) {
-; CHECK: f1:
+; CHECK-LABEL: f1:
; CHECK: llcr %r2, %r2
; CHECK: br %r14
%byte = trunc i32 %a to i8
; ...and again with an i64.
define i32 @f2(i64 %a) {
-; CHECK: f2:
+; CHECK-LABEL: f2:
; CHECK: llcr %r2, %r2
; CHECK: br %r14
%byte = trunc i64 %a to i8
; Check ANDs that are equivalent to zero extension.
define i32 @f3(i32 %a) {
-; CHECK: f3:
+; CHECK-LABEL: f3:
; CHECK: llcr %r2, %r2
; CHECK: br %r14
%ext = and i32 %a, 255
; Check LLC with no displacement.
define i32 @f4(i8 *%src) {
-; CHECK: f4:
+; CHECK-LABEL: f4:
; CHECK: llc %r2, 0(%r2)
; CHECK: br %r14
%byte = load i8 *%src
; Check the high end of the LLC range.
define i32 @f5(i8 *%src) {
-; CHECK: f5:
+; CHECK-LABEL: f5:
; CHECK: llc %r2, 524287(%r2)
; CHECK: br %r14
%ptr = getelementptr i8 *%src, i64 524287
; Check the next byte up, which needs separate address logic.
; Other sequences besides this one would be OK.
define i32 @f6(i8 *%src) {
-; CHECK: f6:
+; CHECK-LABEL: f6:
; CHECK: agfi %r2, 524288
; CHECK: llc %r2, 0(%r2)
; CHECK: br %r14
; Check the high end of the negative LLC range.
define i32 @f7(i8 *%src) {
-; CHECK: f7:
+; CHECK-LABEL: f7:
; CHECK: llc %r2, -1(%r2)
; CHECK: br %r14
%ptr = getelementptr i8 *%src, i64 -1
; Check the low end of the LLC range.
define i32 @f8(i8 *%src) {
-; CHECK: f8:
+; CHECK-LABEL: f8:
; CHECK: llc %r2, -524288(%r2)
; CHECK: br %r14
%ptr = getelementptr i8 *%src, i64 -524288
; Check the next byte down, which needs separate address logic.
; Other sequences besides this one would be OK.
define i32 @f9(i8 *%src) {
-; CHECK: f9:
+; CHECK-LABEL: f9:
; CHECK: agfi %r2, -524289
; CHECK: llc %r2, 0(%r2)
; CHECK: br %r14
; Check that LLC allows an index
define i32 @f10(i64 %src, i64 %index) {
-; CHECK: f10:
+; CHECK-LABEL: f10:
; CHECK: llc %r2, 524287(%r3,%r2)
; CHECK: br %r14
%add1 = add i64 %src, %index
%ext = zext i8 %byte to i32
ret i32 %ext
}
+
+; Test a case where we spill the source of at least one LLCR. We want
+; to use LLC if possible.
+define void @f11(i32 *%ptr) {
+; CHECK-LABEL: f11:
+; CHECK: llc {{%r[0-9]+}}, 16{{[37]}}(%r15)
+; CHECK: br %r14
+ %val0 = load volatile i32 *%ptr
+ %val1 = load volatile i32 *%ptr
+ %val2 = load volatile i32 *%ptr
+ %val3 = load volatile i32 *%ptr
+ %val4 = load volatile i32 *%ptr
+ %val5 = load volatile i32 *%ptr
+ %val6 = load volatile i32 *%ptr
+ %val7 = load volatile i32 *%ptr
+ %val8 = load volatile i32 *%ptr
+ %val9 = load volatile i32 *%ptr
+ %val10 = load volatile i32 *%ptr
+ %val11 = load volatile i32 *%ptr
+ %val12 = load volatile i32 *%ptr
+ %val13 = load volatile i32 *%ptr
+ %val14 = load volatile i32 *%ptr
+ %val15 = load volatile i32 *%ptr
+
+ %trunc0 = trunc i32 %val0 to i8
+ %trunc1 = trunc i32 %val1 to i8
+ %trunc2 = trunc i32 %val2 to i8
+ %trunc3 = trunc i32 %val3 to i8
+ %trunc4 = trunc i32 %val4 to i8
+ %trunc5 = trunc i32 %val5 to i8
+ %trunc6 = trunc i32 %val6 to i8
+ %trunc7 = trunc i32 %val7 to i8
+ %trunc8 = trunc i32 %val8 to i8
+ %trunc9 = trunc i32 %val9 to i8
+ %trunc10 = trunc i32 %val10 to i8
+ %trunc11 = trunc i32 %val11 to i8
+ %trunc12 = trunc i32 %val12 to i8
+ %trunc13 = trunc i32 %val13 to i8
+ %trunc14 = trunc i32 %val14 to i8
+ %trunc15 = trunc i32 %val15 to i8
+
+ %ext0 = zext i8 %trunc0 to i32
+ %ext1 = zext i8 %trunc1 to i32
+ %ext2 = zext i8 %trunc2 to i32
+ %ext3 = zext i8 %trunc3 to i32
+ %ext4 = zext i8 %trunc4 to i32
+ %ext5 = zext i8 %trunc5 to i32
+ %ext6 = zext i8 %trunc6 to i32
+ %ext7 = zext i8 %trunc7 to i32
+ %ext8 = zext i8 %trunc8 to i32
+ %ext9 = zext i8 %trunc9 to i32
+ %ext10 = zext i8 %trunc10 to i32
+ %ext11 = zext i8 %trunc11 to i32
+ %ext12 = zext i8 %trunc12 to i32
+ %ext13 = zext i8 %trunc13 to i32
+ %ext14 = zext i8 %trunc14 to i32
+ %ext15 = zext i8 %trunc15 to i32
+
+ store volatile i32 %val0, i32 *%ptr
+ store volatile i32 %val1, i32 *%ptr
+ store volatile i32 %val2, i32 *%ptr
+ store volatile i32 %val3, i32 *%ptr
+ store volatile i32 %val4, i32 *%ptr
+ store volatile i32 %val5, i32 *%ptr
+ store volatile i32 %val6, i32 *%ptr
+ store volatile i32 %val7, i32 *%ptr
+ store volatile i32 %val8, i32 *%ptr
+ store volatile i32 %val9, i32 *%ptr
+ store volatile i32 %val10, i32 *%ptr
+ store volatile i32 %val11, i32 *%ptr
+ store volatile i32 %val12, i32 *%ptr
+ store volatile i32 %val13, i32 *%ptr
+ store volatile i32 %val14, i32 *%ptr
+ store volatile i32 %val15, i32 *%ptr
+
+ store volatile i32 %ext0, i32 *%ptr
+ store volatile i32 %ext1, i32 *%ptr
+ store volatile i32 %ext2, i32 *%ptr
+ store volatile i32 %ext3, i32 *%ptr
+ store volatile i32 %ext4, i32 *%ptr
+ store volatile i32 %ext5, i32 *%ptr
+ store volatile i32 %ext6, i32 *%ptr
+ store volatile i32 %ext7, i32 *%ptr
+ store volatile i32 %ext8, i32 *%ptr
+ store volatile i32 %ext9, i32 *%ptr
+ store volatile i32 %ext10, i32 *%ptr
+ store volatile i32 %ext11, i32 *%ptr
+ store volatile i32 %ext12, i32 *%ptr
+ store volatile i32 %ext13, i32 *%ptr
+ store volatile i32 %ext14, i32 *%ptr
+ store volatile i32 %ext15, i32 *%ptr
+
+ ret void
+}
projects / oota-llvm.git / blobdiff