forked from OSchip/llvm-project
31 lines
878 B
LLVM
31 lines
878 B
LLVM
|
; Test moves between FPRs and GPRs for z196 and above.
|
||
|
|
;
|
||
|
|
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
|
||
|
|
|
||
|
|
; Check that moves from i32s to floats can use high registers.
|
||
|
|
define float @f1(i16 *%ptr) {
|
||
|
|
; CHECK-LABEL: f1:
|
||
|
|
; CHECK: llhh [[REG:%r[0-5]]], 0(%r2)
|
||
|
|
; CHECK: oihh [[REG]], 16256
|
||
|
|
; CHECK: ldgr %f0, [[REG]]
|
||
|
|
; CHECK: br %r14
|
||
|
|
%base = load i16 *%ptr
|
||
|
|
%ext = zext i16 %base to i32
|
||
|
|
%full = or i32 %ext, 1065353216
|
||
|
|
%res = bitcast i32 %full to float
|
||
|
|
ret float %res
|
||
|
|
}
|
||
|
|
|
||
|
|
; Check that moves from floats to i32s can use high registers.
|
||
|
|
; This "store the low byte" technique is used by llvmpipe, for example.
|
||
|
|
define void @f2(float %val, i8 *%ptr) {
|
||
|
|
; CHECK-LABEL: f2:
|
||
|
|
; CHECK: lgdr [[REG:%r[0-5]]], %f0
|
||
|
|
; CHECK: stch [[REG]], 0(%r2)
|
||
|
|
; CHECK: br %r14
|
||
|
|
%res = bitcast float %val to i32
|
||
|
|
%trunc = trunc i32 %res to i8
|
||
|
|
store i8 %trunc, i8 *%ptr
|
||
|
|
ret void
|
||
|
|
}
|