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[mips] Check emitted code for llvm.bswap.i32 on MIPS16/MIPS64 and llvm.bswap.i64 on MIPS16.

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While reviewing r204163, I noticed that the MIPS16 test only checked for a .ent
directive and didn't actually check the code emitted. Fixed this and added a
check for llvm.bswap.i32 on MIPS64 at the same time.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205177 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders 2014-03-31 11:00:04 +00:00
parent 2357a94977
commit dd67fd636c
1 changed files with 64 additions and 6 deletions
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70
test/CodeGen/Mips/bswap.ll
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@ -1,23 +1,70 @@
; RUN: llc < %s -march=mipsel -mcpu=mips32r2 | FileCheck %s -check-prefix=MIPS32
; RUN: llc < %s -march=mips64el -mcpu=mips64r2 | FileCheck %s -check-prefix=MIPS64
; RUN: llc < %s -mtriple=mipsel-linux-gnu -march=mipsel -mcpu=mips32r2 -mattr=+mips16 | FileCheck %s -check-prefix=mips16
; RUN: llc < %s -mtriple=mipsel-linux-gnu -march=mipsel -mcpu=mips32r2 -mattr=+mips16 | FileCheck %s -check-prefix=MIPS16
define i32 @bswap32(i32 %x) nounwind readnone {
entry:
; MIPS32-LABEL: bswap32:
; MIPS32: wsbh $[[R0:[0-9]+]]
; MIPS32: rotr ${{[0-9]+}}, $[[R0]], 16
; mips16: .ent bswap32
; MIPS64-LABEL: bswap32:
; MIPS64: wsbh $[[R0:[0-9]+]]
; MIPS64: rotr ${{[0-9]+}}, $[[R0]], 16
; MIPS16-LABEL: bswap32:
; MIPS16-DAG: srl $[[R0:[0-9]+]], $4, 8
; MIPS16-DAG: srl $[[R1:[0-9]+]], $4, 24
; MIPS16-DAG: sll $[[R2:[0-9]+]], $4, 8
; MIPS16-DAG: sll $[[R3:[0-9]+]], $4, 24
; MIPS16-DAG: li $[[R4:[0-9]+]], 65280
; MIPS16-DAG: and $[[R4]], $[[R0]]
; MIPS16-DAG: or $[[R1]], $[[R4]]
; MIPS16-DAG: lw $[[R7:[0-9]+]], $CPI
; MIPS16-DAG: and $[[R7]], $[[R2]]
; MIPS16-DAG: or $[[R3]], $[[R7]]
; MIPS16-DAG: or $[[R3]], $[[R1]]
%or.3 = call i32 @llvm.bswap.i32(i32 %x)
ret i32 %or.3
}
define i64 @bswap64(i64 %x) nounwind readnone {
entry:
; MIPS32-LABEL: bswap64:
; MIPS32: wsbh $[[R0:[0-9]+]]
; MIPS32: rotr ${{[0-9]+}}, $[[R0]], 16
; MIPS32: wsbh $[[R0:[0-9]+]]
; MIPS32: rotr ${{[0-9]+}}, $[[R0]], 16
; MIPS64-LABEL: bswap64:
; MIPS64: dsbh $[[R0:[0-9]+]]
; MIPS64: dshd ${{[0-9]+}}, $[[R0]]
; mips16: .ent bswap64
; MIPS16-LABEL: bswap64:
; MIPS16-DAG: srl $[[R0:[0-9]+]], $5, 8
; MIPS16-DAG: srl $[[R1:[0-9]+]], $5, 24
; MIPS16-DAG: sll $[[R2:[0-9]+]], $5, 8
; MIPS16-DAG: sll $[[R3:[0-9]+]], $5, 24
; MIPS16-DAG: li $[[R4:[0-9]+]], 65280
; MIPS16-DAG: and $[[R0]], $[[R4]]
; MIPS16-DAG: or $[[R1]], $[[R0]]
; MIPS16-DAG: lw $[[R7:[0-9]+]], 1f
; MIPS16-DAG: and $[[R2]], $[[R7]]
; MIPS16-DAG: or $[[R3]], $[[R2]]
; MIPS16-DAG: or $[[R3]], $[[R1]]
; MIPS16-DAG: srl $[[R0:[0-9]+]], $4, 8
; MIPS16-DAG: srl $[[R1:[0-9]+]], $4, 24
; MIPS16-DAG: sll $[[R2:[0-9]+]], $4, 8
; MIPS16-DAG: sll $[[R3:[0-9]+]], $4, 24
; MIPS16-DAG: li $[[R4:[0-9]+]], 65280
; MIPS16-DAG: and $[[R0]], $[[R4]]
; MIPS16-DAG: or $[[R1]], $[[R0]]
; MIPS16-DAG: lw $[[R7:[0-9]+]], 1f
; MIPS16-DAG: and $[[R2]], $[[R7]]
; MIPS16-DAG: or $[[R3]], $[[R2]]
; MIPS16-DAG: or $[[R3]], $[[R1]]
%or.7 = call i64 @llvm.bswap.i64(i64 %x)
ret i64 %or.7
}
@ -33,13 +80,24 @@ entry:
; MIPS32: rotr ${{[0-9]+}}, $[[R0]], 16
; MIPS32: wsbh $[[R0:[0-9]+]]
; MIPS32: rotr ${{[0-9]+}}, $[[R0]], 16
; mips16: .ent bswapv4i32
; MIPS64-LABEL: bswapv4i32:
; MIPS64: wsbh $[[R0:[0-9]+]]
; MIPS64: rotr ${{[0-9]+}}, $[[R0]], 16
; MIPS64: wsbh $[[R0:[0-9]+]]
; MIPS64: rotr ${{[0-9]+}}, $[[R0]], 16
; MIPS64: wsbh $[[R0:[0-9]+]]
; MIPS64: rotr ${{[0-9]+}}, $[[R0]], 16
; MIPS64: wsbh $[[R0:[0-9]+]]
; MIPS64: rotr ${{[0-9]+}}, $[[R0]], 16
; Don't bother with a MIPS16 version. It's just bswap32 repeated four times and
; would be very long
%ret = call <4 x i32> @llvm.bswap.v4i32(<4 x i32> %x)
ret <4 x i32> %ret
}
declare i32 @llvm.bswap.i32(i32) nounwind readnone
declare i64 @llvm.bswap.i64(i64) nounwind readnone