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|
; Test subtractions of a zero-extended i32 from an i64.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
declare i64 @foo()
; Check SLGFR.
define i64 @f1(i64 %a, i32 %b) {
; CHECK-LABEL: f1:
; CHECK: slgfr %r2, %r3
; CHECK: br %r14
%bext = zext i32 %b to i64
%sub = sub i64 %a, %bext
ret i64 %sub
}
; Check SLGF with no displacement.
define i64 @f2(i64 %a, i32 *%src) {
; CHECK-LABEL: f2:
; CHECK: slgf %r2, 0(%r3)
; CHECK: br %r14
%b = load i32 , i32 *%src
%bext = zext i32 %b to i64
%sub = sub i64 %a, %bext
ret i64 %sub
}
; Check the high end of the aligned SLGF range.
define i64 @f3(i64 %a, i32 *%src) {
; CHECK-LABEL: f3:
; CHECK: slgf %r2, 524284(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 131071
%b = load i32 , i32 *%ptr
%bext = zext i32 %b to i64
%sub = sub i64 %a, %bext
ret i64 %sub
}
; Check the next word up, which needs separate address logic.
; Other sequences besides this one would be OK.
define i64 @f4(i64 %a, i32 *%src) {
; CHECK-LABEL: f4:
; CHECK: agfi %r3, 524288
; CHECK: slgf %r2, 0(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 131072
%b = load i32 , i32 *%ptr
%bext = zext i32 %b to i64
%sub = sub i64 %a, %bext
ret i64 %sub
}
; Check the high end of the negative aligned SLGF range.
define i64 @f5(i64 %a, i32 *%src) {
; CHECK-LABEL: f5:
; CHECK: slgf %r2, -4(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 -1
%b = load i32 , i32 *%ptr
%bext = zext i32 %b to i64
%sub = sub i64 %a, %bext
ret i64 %sub
}
; Check the low end of the SLGF range.
define i64 @f6(i64 %a, i32 *%src) {
; CHECK-LABEL: f6:
; CHECK: slgf %r2, -524288(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 -131072
%b = load i32 , i32 *%ptr
%bext = zext i32 %b to i64
%sub = sub i64 %a, %bext
ret i64 %sub
}
; Check the next word down, which needs separate address logic.
; Other sequences besides this one would be OK.
define i64 @f7(i64 %a, i32 *%src) {
; CHECK-LABEL: f7:
; CHECK: agfi %r3, -524292
; CHECK: slgf %r2, 0(%r3)
; CHECK: br %r14
%ptr = getelementptr i32, i32 *%src, i64 -131073
%b = load i32 , i32 *%ptr
%bext = zext i32 %b to i64
%sub = sub i64 %a, %bext
ret i64 %sub
}
; Check that SLGF allows an index.
define i64 @f8(i64 %a, i64 %src, i64 %index) {
; CHECK-LABEL: f8:
; CHECK: slgf %r2, 524284({{%r4,%r3|%r3,%r4}})
; CHECK: br %r14
%add1 = add i64 %src, %index
%add2 = add i64 %add1, 524284
%ptr = inttoptr i64 %add2 to i32 *
%b = load i32 , i32 *%ptr
%bext = zext i32 %b to i64
%sub = sub i64 %a, %bext
ret i64 %sub
}
; Check that subtractions of spilled values can use SLGF rather than SLGFR.
define i64 @f9(i32 *%ptr0) {
; CHECK-LABEL: f9:
; CHECK: brasl %r14, foo@PLT
; CHECK: slgf %r2, 16{{[04]}}(%r15)
; CHECK: br %r14
%ptr1 = getelementptr i32, i32 *%ptr0, i64 2
%ptr2 = getelementptr i32, i32 *%ptr0, i64 4
%ptr3 = getelementptr i32, i32 *%ptr0, i64 6
%ptr4 = getelementptr i32, i32 *%ptr0, i64 8
%ptr5 = getelementptr i32, i32 *%ptr0, i64 10
%ptr6 = getelementptr i32, i32 *%ptr0, i64 12
%ptr7 = getelementptr i32, i32 *%ptr0, i64 14
%ptr8 = getelementptr i32, i32 *%ptr0, i64 16
%ptr9 = getelementptr i32, i32 *%ptr0, i64 18
%val0 = load i32 , i32 *%ptr0
%val1 = load i32 , i32 *%ptr1
%val2 = load i32 , i32 *%ptr2
%val3 = load i32 , i32 *%ptr3
%val4 = load i32 , i32 *%ptr4
%val5 = load i32 , i32 *%ptr5
%val6 = load i32 , i32 *%ptr6
%val7 = load i32 , i32 *%ptr7
%val8 = load i32 , i32 *%ptr8
%val9 = load i32 , i32 *%ptr9
%frob0 = add i32 %val0, 100
%frob1 = add i32 %val1, 100
%frob2 = add i32 %val2, 100
%frob3 = add i32 %val3, 100
%frob4 = add i32 %val4, 100
%frob5 = add i32 %val5, 100
%frob6 = add i32 %val6, 100
%frob7 = add i32 %val7, 100
%frob8 = add i32 %val8, 100
%frob9 = add i32 %val9, 100
store i32 %frob0, i32 *%ptr0
store i32 %frob1, i32 *%ptr1
store i32 %frob2, i32 *%ptr2
store i32 %frob3, i32 *%ptr3
store i32 %frob4, i32 *%ptr4
store i32 %frob5, i32 *%ptr5
store i32 %frob6, i32 *%ptr6
store i32 %frob7, i32 *%ptr7
store i32 %frob8, i32 *%ptr8
store i32 %frob9, i32 *%ptr9
%ret = call i64 @foo()
%ext0 = zext i32 %frob0 to i64
%ext1 = zext i32 %frob1 to i64
%ext2 = zext i32 %frob2 to i64
%ext3 = zext i32 %frob3 to i64
%ext4 = zext i32 %frob4 to i64
%ext5 = zext i32 %frob5 to i64
%ext6 = zext i32 %frob6 to i64
%ext7 = zext i32 %frob7 to i64
%ext8 = zext i32 %frob8 to i64
%ext9 = zext i32 %frob9 to i64
%sub0 = sub i64 %ret, %ext0
%sub1 = sub i64 %sub0, %ext1
%sub2 = sub i64 %sub1, %ext2
%sub3 = sub i64 %sub2, %ext3
%sub4 = sub i64 %sub3, %ext4
%sub5 = sub i64 %sub4, %ext5
%sub6 = sub i64 %sub5, %ext6
%sub7 = sub i64 %sub6, %ext7
%sub8 = sub i64 %sub7, %ext8
%sub9 = sub i64 %sub8, %ext9
ret i64 %sub9
}
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