mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-30 15:32:52 +01:00
c7495a0fca
Add a mapping from register-based <INSN>R instructions to the corresponding memory-based <INSN>. Use it to cut down on the number of spill loads. Some instructions extend their operands from smaller fields, so this required a new TSFlags field to say how big the unextended operand is. This optimisation doesn't trigger for C(G)R and CL(G)R because in practice we always combine those instructions with a branch. Adding a test for every other case probably seems excessive, but it did catch a missed optimisation for DSGF (fixed in r185435). llvm-svn: 185529
140 lines
3.3 KiB
LLVM
140 lines
3.3 KiB
LLVM
; Test 64-bit XORs in which the second operand is variable.
|
|
;
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
|
|
|
|
declare i64 @foo()
|
|
|
|
; Check XGR.
|
|
define i64 @f1(i64 %a, i64 %b) {
|
|
; CHECK: f1:
|
|
; CHECK: xgr %r2, %r3
|
|
; CHECK: br %r14
|
|
%xor = xor i64 %a, %b
|
|
ret i64 %xor
|
|
}
|
|
|
|
; Check XG with no displacement.
|
|
define i64 @f2(i64 %a, i64 *%src) {
|
|
; CHECK: f2:
|
|
; CHECK: xg %r2, 0(%r3)
|
|
; CHECK: br %r14
|
|
%b = load i64 *%src
|
|
%xor = xor i64 %a, %b
|
|
ret i64 %xor
|
|
}
|
|
|
|
; Check the high end of the aligned XG range.
|
|
define i64 @f3(i64 %a, i64 *%src) {
|
|
; CHECK: f3:
|
|
; CHECK: xg %r2, 524280(%r3)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i64 *%src, i64 65535
|
|
%b = load i64 *%ptr
|
|
%xor = xor i64 %a, %b
|
|
ret i64 %xor
|
|
}
|
|
|
|
; Check the next doubleword up, which needs separate address logic.
|
|
; Other sequences besides this one would be OK.
|
|
define i64 @f4(i64 %a, i64 *%src) {
|
|
; CHECK: f4:
|
|
; CHECK: agfi %r3, 524288
|
|
; CHECK: xg %r2, 0(%r3)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i64 *%src, i64 65536
|
|
%b = load i64 *%ptr
|
|
%xor = xor i64 %a, %b
|
|
ret i64 %xor
|
|
}
|
|
|
|
; Check the high end of the negative aligned XG range.
|
|
define i64 @f5(i64 %a, i64 *%src) {
|
|
; CHECK: f5:
|
|
; CHECK: xg %r2, -8(%r3)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i64 *%src, i64 -1
|
|
%b = load i64 *%ptr
|
|
%xor = xor i64 %a, %b
|
|
ret i64 %xor
|
|
}
|
|
|
|
; Check the low end of the XG range.
|
|
define i64 @f6(i64 %a, i64 *%src) {
|
|
; CHECK: f6:
|
|
; CHECK: xg %r2, -524288(%r3)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i64 *%src, i64 -65536
|
|
%b = load i64 *%ptr
|
|
%xor = xor i64 %a, %b
|
|
ret i64 %xor
|
|
}
|
|
|
|
; Check the next doubleword down, which needs separate address logic.
|
|
; Other sequences besides this one would be OK.
|
|
define i64 @f7(i64 %a, i64 *%src) {
|
|
; CHECK: f7:
|
|
; CHECK: agfi %r3, -524296
|
|
; CHECK: xg %r2, 0(%r3)
|
|
; CHECK: br %r14
|
|
%ptr = getelementptr i64 *%src, i64 -65537
|
|
%b = load i64 *%ptr
|
|
%xor = xor i64 %a, %b
|
|
ret i64 %xor
|
|
}
|
|
|
|
; Check that XG allows an index.
|
|
define i64 @f8(i64 %a, i64 %src, i64 %index) {
|
|
; CHECK: f8:
|
|
; CHECK: xg %r2, 524280({{%r4,%r3|%r3,%r4}})
|
|
; CHECK: br %r14
|
|
%add1 = add i64 %src, %index
|
|
%add2 = add i64 %add1, 524280
|
|
%ptr = inttoptr i64 %add2 to i64 *
|
|
%b = load i64 *%ptr
|
|
%xor = xor i64 %a, %b
|
|
ret i64 %xor
|
|
}
|
|
|
|
; Check that XORs of spilled values can use OG rather than OGR.
|
|
define i64 @f9(i64 *%ptr0) {
|
|
; CHECK: f9:
|
|
; CHECK: brasl %r14, foo@PLT
|
|
; CHECK: xg %r2, 160(%r15)
|
|
; CHECK: br %r14
|
|
%ptr1 = getelementptr i64 *%ptr0, i64 2
|
|
%ptr2 = getelementptr i64 *%ptr0, i64 4
|
|
%ptr3 = getelementptr i64 *%ptr0, i64 6
|
|
%ptr4 = getelementptr i64 *%ptr0, i64 8
|
|
%ptr5 = getelementptr i64 *%ptr0, i64 10
|
|
%ptr6 = getelementptr i64 *%ptr0, i64 12
|
|
%ptr7 = getelementptr i64 *%ptr0, i64 14
|
|
%ptr8 = getelementptr i64 *%ptr0, i64 16
|
|
%ptr9 = getelementptr i64 *%ptr0, i64 18
|
|
|
|
%val0 = load i64 *%ptr0
|
|
%val1 = load i64 *%ptr1
|
|
%val2 = load i64 *%ptr2
|
|
%val3 = load i64 *%ptr3
|
|
%val4 = load i64 *%ptr4
|
|
%val5 = load i64 *%ptr5
|
|
%val6 = load i64 *%ptr6
|
|
%val7 = load i64 *%ptr7
|
|
%val8 = load i64 *%ptr8
|
|
%val9 = load i64 *%ptr9
|
|
|
|
%ret = call i64 @foo()
|
|
|
|
%xor0 = xor i64 %ret, %val0
|
|
%xor1 = xor i64 %xor0, %val1
|
|
%xor2 = xor i64 %xor1, %val2
|
|
%xor3 = xor i64 %xor2, %val3
|
|
%xor4 = xor i64 %xor3, %val4
|
|
%xor5 = xor i64 %xor4, %val5
|
|
%xor6 = xor i64 %xor5, %val6
|
|
%xor7 = xor i64 %xor6, %val7
|
|
%xor8 = xor i64 %xor7, %val8
|
|
%xor9 = xor i64 %xor8, %val9
|
|
|
|
ret i64 %xor9
|
|
}
|