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|
; Test high-word operations, using "h" constraints to force a high
; register and "r" constraints to force a low register.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
; Test loads and stores involving mixtures of high and low registers.
define void @f1(i32 *%ptr1, i32 *%ptr2) {
; CHECK-LABEL: f1:
; CHECK-DAG: lfh [[REG1:%r[0-5]]], 0(%r2)
; CHECK-DAG: l [[REG2:%r[0-5]]], 0(%r3)
; CHECK-DAG: lfh [[REG3:%r[0-5]]], 4096(%r2)
; CHECK-DAG: ly [[REG4:%r[0-5]]], 524284(%r3)
; CHECK: blah [[REG1]], [[REG2]], [[REG3]], [[REG4]]
; CHECK-DAG: stfh [[REG1]], 0(%r2)
; CHECK-DAG: st [[REG2]], 0(%r3)
; CHECK-DAG: stfh [[REG3]], 4096(%r2)
; CHECK-DAG: sty [[REG4]], 524284(%r3)
; CHECK: br %r14
%ptr3 = getelementptr i32 *%ptr1, i64 1024
%ptr4 = getelementptr i32 *%ptr2, i64 131071
%old1 = load i32 *%ptr1
%old2 = load i32 *%ptr2
%old3 = load i32 *%ptr3
%old4 = load i32 *%ptr4
%res = call { i32, i32, i32, i32 } asm "blah $0, $1, $2, $3",
"=h,=r,=h,=r,0,1,2,3"(i32 %old1, i32 %old2, i32 %old3, i32 %old4)
%new1 = extractvalue { i32, i32, i32, i32 } %res, 0
%new2 = extractvalue { i32, i32, i32, i32 } %res, 1
%new3 = extractvalue { i32, i32, i32, i32 } %res, 2
%new4 = extractvalue { i32, i32, i32, i32 } %res, 3
store i32 %new1, i32 *%ptr1
store i32 %new2, i32 *%ptr2
store i32 %new3, i32 *%ptr3
store i32 %new4, i32 *%ptr4
ret void
}
; Test moves involving mixtures of high and low registers.
define i32 @f2(i32 %old) {
; CHECK-LABEL: f2:
; CHECK-DAG: risbhg [[REG1:%r[0-5]]], %r2, 0, 159, 32
; CHECK-DAG: lr %r3, %r2
; CHECK: stepa [[REG1]], %r2, %r3
; CHECK: risbhg {{%r[0-5]}}, [[REG1]], 0, 159, 0
; CHECK: stepb [[REG2:%r[0-5]]]
; CHECK: risblg %r2, [[REG2]], 0, 159, 32
; CHECK: br %r14
%tmp = call i32 asm "stepa $1, $2, $3",
"=h,0,{r2},{r3}"(i32 %old, i32 %old, i32 %old)
%new = call i32 asm "stepb $1, $2", "=&h,0,h"(i32 %tmp, i32 %tmp)
ret i32 %new
}
; Test sign-extending 8-bit loads into mixtures of high and low registers.
define void @f3(i8 *%ptr1, i8 *%ptr2) {
; CHECK-LABEL: f3:
; CHECK-DAG: lbh [[REG1:%r[0-5]]], 0(%r2)
; CHECK-DAG: lb [[REG2:%r[0-5]]], 0(%r3)
; CHECK-DAG: lbh [[REG3:%r[0-5]]], 4096(%r2)
; CHECK-DAG: lb [[REG4:%r[0-5]]], 524287(%r3)
; CHECK: blah [[REG1]], [[REG2]]
; CHECK: br %r14
%ptr3 = getelementptr i8 *%ptr1, i64 4096
%ptr4 = getelementptr i8 *%ptr2, i64 524287
%val1 = load i8 *%ptr1
%val2 = load i8 *%ptr2
%val3 = load i8 *%ptr3
%val4 = load i8 *%ptr4
%ext1 = sext i8 %val1 to i32
%ext2 = sext i8 %val2 to i32
%ext3 = sext i8 %val3 to i32
%ext4 = sext i8 %val4 to i32
call void asm sideeffect "blah $0, $1, $2, $3",
"h,r,h,r"(i32 %ext1, i32 %ext2, i32 %ext3, i32 %ext4)
ret void
}
; Test sign-extending 16-bit loads into mixtures of high and low registers.
define void @f4(i16 *%ptr1, i16 *%ptr2) {
; CHECK-LABEL: f4:
; CHECK-DAG: lhh [[REG1:%r[0-5]]], 0(%r2)
; CHECK-DAG: lh [[REG2:%r[0-5]]], 0(%r3)
; CHECK-DAG: lhh [[REG3:%r[0-5]]], 4096(%r2)
; CHECK-DAG: lhy [[REG4:%r[0-5]]], 524286(%r3)
; CHECK: blah [[REG1]], [[REG2]]
; CHECK: br %r14
%ptr3 = getelementptr i16 *%ptr1, i64 2048
%ptr4 = getelementptr i16 *%ptr2, i64 262143
%val1 = load i16 *%ptr1
%val2 = load i16 *%ptr2
%val3 = load i16 *%ptr3
%val4 = load i16 *%ptr4
%ext1 = sext i16 %val1 to i32
%ext2 = sext i16 %val2 to i32
%ext3 = sext i16 %val3 to i32
%ext4 = sext i16 %val4 to i32
call void asm sideeffect "blah $0, $1, $2, $3",
"h,r,h,r"(i32 %ext1, i32 %ext2, i32 %ext3, i32 %ext4)
ret void
}
; Test zero-extending 8-bit loads into mixtures of high and low registers.
define void @f5(i8 *%ptr1, i8 *%ptr2) {
; CHECK-LABEL: f5:
; CHECK-DAG: llch [[REG1:%r[0-5]]], 0(%r2)
; CHECK-DAG: llc [[REG2:%r[0-5]]], 0(%r3)
; CHECK-DAG: llch [[REG3:%r[0-5]]], 4096(%r2)
; CHECK-DAG: llc [[REG4:%r[0-5]]], 524287(%r3)
; CHECK: blah [[REG1]], [[REG2]]
; CHECK: br %r14
%ptr3 = getelementptr i8 *%ptr1, i64 4096
%ptr4 = getelementptr i8 *%ptr2, i64 524287
%val1 = load i8 *%ptr1
%val2 = load i8 *%ptr2
%val3 = load i8 *%ptr3
%val4 = load i8 *%ptr4
%ext1 = zext i8 %val1 to i32
%ext2 = zext i8 %val2 to i32
%ext3 = zext i8 %val3 to i32
%ext4 = zext i8 %val4 to i32
call void asm sideeffect "blah $0, $1, $2, $3",
"h,r,h,r"(i32 %ext1, i32 %ext2, i32 %ext3, i32 %ext4)
ret void
}
; Test zero-extending 16-bit loads into mixtures of high and low registers.
define void @f6(i16 *%ptr1, i16 *%ptr2) {
; CHECK-LABEL: f6:
; CHECK-DAG: llhh [[REG1:%r[0-5]]], 0(%r2)
; CHECK-DAG: llh [[REG2:%r[0-5]]], 0(%r3)
; CHECK-DAG: llhh [[REG3:%r[0-5]]], 4096(%r2)
; CHECK-DAG: llh [[REG4:%r[0-5]]], 524286(%r3)
; CHECK: blah [[REG1]], [[REG2]]
; CHECK: br %r14
%ptr3 = getelementptr i16 *%ptr1, i64 2048
%ptr4 = getelementptr i16 *%ptr2, i64 262143
%val1 = load i16 *%ptr1
%val2 = load i16 *%ptr2
%val3 = load i16 *%ptr3
%val4 = load i16 *%ptr4
%ext1 = zext i16 %val1 to i32
%ext2 = zext i16 %val2 to i32
%ext3 = zext i16 %val3 to i32
%ext4 = zext i16 %val4 to i32
call void asm sideeffect "blah $0, $1, $2, $3",
"h,r,h,r"(i32 %ext1, i32 %ext2, i32 %ext3, i32 %ext4)
ret void
}
; Test truncating stores of high and low registers into 8-bit memory.
define void @f7(i8 *%ptr1, i8 *%ptr2) {
; CHECK-LABEL: f7:
; CHECK: blah [[REG1:%r[0-5]]], [[REG2:%r[0-5]]]
; CHECK-DAG: stch [[REG1]], 0(%r2)
; CHECK-DAG: stc [[REG2]], 0(%r3)
; CHECK-DAG: stch [[REG1]], 4096(%r2)
; CHECK-DAG: stcy [[REG2]], 524287(%r3)
; CHECK: br %r14
%res = call { i32, i32 } asm "blah $0, $1", "=h,=r"()
%res1 = extractvalue { i32, i32 } %res, 0
%res2 = extractvalue { i32, i32 } %res, 1
%trunc1 = trunc i32 %res1 to i8
%trunc2 = trunc i32 %res2 to i8
%ptr3 = getelementptr i8 *%ptr1, i64 4096
%ptr4 = getelementptr i8 *%ptr2, i64 524287
store i8 %trunc1, i8 *%ptr1
store i8 %trunc2, i8 *%ptr2
store i8 %trunc1, i8 *%ptr3
store i8 %trunc2, i8 *%ptr4
ret void
}
; Test truncating stores of high and low registers into 16-bit memory.
define void @f8(i16 *%ptr1, i16 *%ptr2) {
; CHECK-LABEL: f8:
; CHECK: blah [[REG1:%r[0-5]]], [[REG2:%r[0-5]]]
; CHECK-DAG: sthh [[REG1]], 0(%r2)
; CHECK-DAG: sth [[REG2]], 0(%r3)
; CHECK-DAG: sthh [[REG1]], 4096(%r2)
; CHECK-DAG: sthy [[REG2]], 524286(%r3)
; CHECK: br %r14
%res = call { i32, i32 } asm "blah $0, $1", "=h,=r"()
%res1 = extractvalue { i32, i32 } %res, 0
%res2 = extractvalue { i32, i32 } %res, 1
%trunc1 = trunc i32 %res1 to i16
%trunc2 = trunc i32 %res2 to i16
%ptr3 = getelementptr i16 *%ptr1, i64 2048
%ptr4 = getelementptr i16 *%ptr2, i64 262143
store i16 %trunc1, i16 *%ptr1
store i16 %trunc2, i16 *%ptr2
store i16 %trunc1, i16 *%ptr3
store i16 %trunc2, i16 *%ptr4
ret void
}
; Test zero extensions from 8 bits between mixtures of high and low registers.
define i32 @f9(i8 %val1, i8 %val2) {
; CHECK-LABEL: f9:
; CHECK-DAG: risbhg [[REG1:%r[0-5]]], %r2, 24, 159, 32
; CHECK-DAG: llcr [[REG2:%r[0-5]]], %r3
; CHECK: stepa [[REG1]], [[REG2]]
; CHECK: risbhg [[REG3:%r[0-5]]], [[REG1]], 24, 159, 0
; CHECK: stepb [[REG3]]
; CHECK: risblg %r2, [[REG3]], 24, 159, 32
; CHECK: br %r14
%ext1 = zext i8 %val1 to i32
%ext2 = zext i8 %val2 to i32
%val3 = call i8 asm sideeffect "stepa $0, $1", "=h,0,r"(i32 %ext1, i32 %ext2)
%ext3 = zext i8 %val3 to i32
%val4 = call i8 asm sideeffect "stepb $0", "=h,0"(i32 %ext3)
%ext4 = zext i8 %val4 to i32
ret i32 %ext4
}
; Test zero extensions from 16 bits between mixtures of high and low registers.
define i32 @f10(i16 %val1, i16 %val2) {
; CHECK-LABEL: f10:
; CHECK-DAG: risbhg [[REG1:%r[0-5]]], %r2, 16, 159, 32
; CHECK-DAG: llhr [[REG2:%r[0-5]]], %r3
; CHECK: stepa [[REG1]], [[REG2]]
; CHECK: risbhg [[REG3:%r[0-5]]], [[REG1]], 16, 159, 0
; CHECK: stepb [[REG3]]
; CHECK: risblg %r2, [[REG3]], 16, 159, 32
; CHECK: br %r14
%ext1 = zext i16 %val1 to i32
%ext2 = zext i16 %val2 to i32
%val3 = call i16 asm sideeffect "stepa $0, $1", "=h,0,r"(i32 %ext1, i32 %ext2)
%ext3 = zext i16 %val3 to i32
%val4 = call i16 asm sideeffect "stepb $0", "=h,0"(i32 %ext3)
%ext4 = zext i16 %val4 to i32
ret i32 %ext4
}
; Test loads of 16-bit constants into mixtures of high and low registers.
define void @f11() {
; CHECK-LABEL: f11:
; CHECK-DAG: iihf [[REG1:%r[0-5]]], 4294934529
; CHECK-DAG: lhi [[REG2:%r[0-5]]], -32768
; CHECK-DAG: llihl [[REG3:%r[0-5]]], 32766
; CHECK-DAG: lhi [[REG4:%r[0-5]]], 32767
; CHECK: blah [[REG1]], [[REG2]], [[REG3]], [[REG4]]
; CHECK: br %r14
call void asm sideeffect "blah $0, $1, $2, $3",
"h,r,h,r"(i32 -32767, i32 -32768,
i32 32766, i32 32767)
ret void
}
; Test loads of unsigned constants into mixtures of high and low registers.
; For stepc, we expect the h and r operands to be paired by the register
; allocator. It doesn't really matter which comes first: LLILL/IIHF would
; be just as good.
define void @f12() {
; CHECK-LABEL: f12:
; CHECK-DAG: llihl [[REG1:%r[0-5]]], 32768
; CHECK-DAG: llihl [[REG2:%r[0-5]]], 65535
; CHECK-DAG: llihh [[REG3:%r[0-5]]], 1
; CHECK-DAG: llihh [[REG4:%r[0-5]]], 65535
; CHECK: stepa [[REG1]], [[REG2]], [[REG3]], [[REG4]]
; CHECK-DAG: llill [[REG1:%r[0-5]]], 32769
; CHECK-DAG: llill [[REG2:%r[0-5]]], 65534
; CHECK-DAG: llilh [[REG3:%r[0-5]]], 2
; CHECK-DAG: llilh [[REG4:%r[0-5]]], 65534
; CHECK: stepb [[REG1]], [[REG2]], [[REG3]], [[REG4]]
; CHECK-DAG: llihl [[REG1:%r[0-5]]], 32770
; CHECK-DAG: iilf [[REG1]], 65533
; CHECK-DAG: llihh [[REG2:%r[0-5]]], 4
; CHECK-DAG: iilf [[REG2]], 524288
; CHECK: stepc [[REG1]], [[REG1]], [[REG2]], [[REG2]]
; CHECK-DAG: iihf [[REG1:%r[0-5]]], 3294967296
; CHECK-DAG: iilf [[REG2:%r[0-5]]], 4294567296
; CHECK-DAG: iihf [[REG3:%r[0-5]]], 1000000000
; CHECK-DAG: iilf [[REG4:%r[0-5]]], 400000
; CHECK: stepd [[REG1]], [[REG2]], [[REG3]], [[REG4]]
; CHECK: br %r14
call void asm sideeffect "stepa $0, $1, $2, $3",
"h,h,h,h"(i32 32768, i32 65535,
i32 65536, i32 -65536)
call void asm sideeffect "stepb $0, $1, $2, $3",
"r,r,r,r"(i32 32769, i32 65534,
i32 131072, i32 -131072)
call void asm sideeffect "stepc $0, $1, $2, $3",
"h,r,h,r"(i32 32770, i32 65533,
i32 262144, i32 524288)
call void asm sideeffect "stepd $0, $1, $2, $3",
"h,r,h,r"(i32 -1000000000, i32 -400000,
i32 1000000000, i32 400000)
ret void
}
; Test selects involving high registers.
define void @f13(i32 %x, i32 %y) {
; CHECK-LABEL: f13:
; CHECK: llihl [[REG:%r[0-5]]], 0
; CHECK: cije %r2, 0
; CHECK: iihf [[REG]], 2102030405
; CHECK: blah [[REG]]
; CHECK: br %r14
%cmp = icmp eq i32 %x, 0
%val = select i1 %cmp, i32 0, i32 2102030405
call void asm sideeffect "blah $0", "h"(i32 %val)
ret void
}
; Test selects involving low registers.
define void @f14(i32 %x, i32 %y) {
; CHECK-LABEL: f14:
; CHECK: lhi [[REG:%r[0-5]]], 0
; CHECK: cije %r2, 0
; CHECK: iilf [[REG]], 2102030405
; CHECK: blah [[REG]]
; CHECK: br %r14
%cmp = icmp eq i32 %x, 0
%val = select i1 %cmp, i32 0, i32 2102030405
call void asm sideeffect "blah $0", "r"(i32 %val)
ret void
}
; Test immediate insertion involving high registers.
define void @f15() {
; CHECK-LABEL: f15:
; CHECK: stepa [[REG:%r[0-5]]]
; CHECK: iihh [[REG]], 4660
; CHECK: stepb [[REG]]
; CHECK: iihl [[REG]], 34661
; CHECK: stepc [[REG]]
; CHECK: br %r14
%res1 = call i32 asm "stepa $0", "=h"()
%and1 = and i32 %res1, 65535
%or1 = or i32 %and1, 305397760
%res2 = call i32 asm "stepb $0, $1", "=h,h"(i32 %or1)
%and2 = and i32 %res2, -65536
%or2 = or i32 %and2, 34661
call void asm sideeffect "stepc $0", "h"(i32 %or2)
ret void
}
; Test immediate insertion involving low registers.
define void @f16() {
; CHECK-LABEL: f16:
; CHECK: stepa [[REG:%r[0-5]]]
; CHECK: iilh [[REG]], 4660
; CHECK: stepb [[REG]]
; CHECK: iill [[REG]], 34661
; CHECK: stepc [[REG]]
; CHECK: br %r14
%res1 = call i32 asm "stepa $0", "=r"()
%and1 = and i32 %res1, 65535
%or1 = or i32 %and1, 305397760
%res2 = call i32 asm "stepb $0, $1", "=r,r"(i32 %or1)
%and2 = and i32 %res2, -65536
%or2 = or i32 %and2, 34661
call void asm sideeffect "stepc $0", "r"(i32 %or2)
ret void
}
|
