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[mips] Make unalignedload.ll test stricter and easier to modify for MIPS32r6/MIPS64r6 

Summary:
* Split into two functions, one to test each struct.
* R0 and R2 must be defined by an lw with a %got reference to the correct
  symbol.
* Test for $4 (first argument) where appropriate instead of accepting any
  register.
* Test that the two lbu's are correctly combined into $4

Depends on D3844

Reviewers: jkolek, zoran.jovanovic, vmedic

Reviewed By: vmedic

Differential Revision: http://reviews.llvm.org/D3845

llvm-svn: 209424
This commit is contained in:
Daniel Sanders 2014-05-22 11:55:04 +00:00
parent e1f46e58c9
commit 18b68e16af
1 changed files with 30 additions and 13 deletions
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43
llvm/test/CodeGen/Mips/unalignedload.ll
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@ -1,5 +1,5 @@
; RUN: llc < %s -march=mipsel | FileCheck %s -check-prefix=CHECK-EL
; RUN: llc < %s -march=mips | FileCheck %s -check-prefix=CHECK-EB
; RUN: llc < %s -march=mipsel | FileCheck %s -check-prefix=ALL -check-prefix=CHECK-EL
; RUN: llc < %s -march=mips | FileCheck %s -check-prefix=ALL -check-prefix=CHECK-EB
%struct.S2 = type { %struct.S1, %struct.S1 }
%struct.S1 = type { i8, i8 }
%struct.S4 = type { [7 x i8] }
@ -7,21 +7,38 @@
@s2 = common global %struct.S2 zeroinitializer, align 1
@s4 = common global %struct.S4 zeroinitializer, align 1
define void @foo1() nounwind {
define void @bar1() nounwind {
entry:
; CHECK-EL-DAG: lbu ${{[0-9]+}}, 2($[[R0:[0-9]+]])
; CHECK-EL-DAG: lbu ${{[0-9]+}}, 3($[[R0]])
; CHECK-EL: jalr
; CHECK-EL-DAG: lwl $[[R1:[0-9]+]], 3($[[R2:[0-9]+]])
; CHECK-EL-DAG: lwr $[[R1]], 0($[[R2]])
; ALL-LABEL: bar1:
; CHECK-EB-DAG: lbu ${{[0-9]+}}, 3($[[R0:[0-9]+]])
; CHECK-EB-DAG: lbu ${{[0-9]+}}, 2($[[R0]])
; CHECK-EB: jalr
; CHECK-EB-DAG: lwl $[[R1:[0-9]+]], 0($[[R2:[0-9]+]])
; CHECK-EB-DAG: lwr $[[R1]], 3($[[R2]])
; ALL-DAG: lw $[[R0:[0-9]+]], %got(s2)(
; ALL-DAG: lbu $[[PART1:[0-9]+]], 2($[[R0]])
; ALL-DAG: lbu $[[PART2:[0-9]+]], 3($[[R0]])
; CHECK-EL-DAG: sll $[[T0:[0-9]+]], $[[PART2]], 8
; CHECK-EL-DAG: or $4, $[[T0]], $[[PART1]]
; CHECK-EB-DAG: sll $[[T0:[0-9]+]], $[[PART1]], 8
; CHECK-EB-DAG: or $[[T1:[0-9]+]], $[[T0]], $[[PART2]]
; CHECK-EB-DAG: sll $4, $[[T1]], 16
tail call void @foo2(%struct.S1* byval getelementptr inbounds (%struct.S2* @s2, i32 0, i32 1)) nounwind
ret void
}
define void @bar2() nounwind {
entry:
; ALL-LABEL: bar2:
; ALL-DAG: lw $[[R2:[0-9]+]], %got(s4)(
; CHECK-EL-DAG: lwl $[[R1:4]], 3($[[R2]])
; CHECK-EL-DAG: lwr $[[R1]], 0($[[R2]])
; CHECK-EB-DAG: lwl $[[R1:4]], 0($[[R2]])
; CHECK-EB-DAG: lwr $[[R1]], 3($[[R2]])
tail call void @foo4(%struct.S4* byval @s4) nounwind
ret void
}