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llvm-6502/test/CodeGen/PowerPC/anon_aggr.ll
Owen Anderson 8154ef7589 Fix a nasty bug in DAGCombine of STORE nodes. 
This is very related to the bug fixed in r174431.  The problem is that
SelectionDAG does not include alignment in the uniquing of loads and
stores.  When an otherwise no-op DAGCombine would increase the alignment
of a load or store, the original node would be returned (with the
alignment increased), which would cause the node not to be processed by
any further DAGCombines.

I don't have a direct testcase for this that manifests on an in-tree
target, but I did see some noise in the tests for other targets and have
updated them for it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@232780 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-19 22:48:57 +00:00

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; RUN: llc -O0 -mcpu=ppc64 -mtriple=powerpc64-unknown-linux-gnu -fast-isel=false < %s | FileCheck %s
; RUN: llc -O0 -mcpu=g4 -mtriple=powerpc-apple-darwin8 < %s | FileCheck -check-prefix=DARWIN32 %s
; RUN: llc -O0 -mcpu=ppc970 -mtriple=powerpc64-apple-darwin8 < %s | FileCheck -check-prefix=DARWIN64 %s
; Test case for PR 14779: anonymous aggregates are not handled correctly.
; Darwin bug report PR 15821 is similar.
; The bug is triggered by passing a byval structure after an anonymous
; aggregate.
%tarray = type { i64, i8* }
define i8* @func1({ i64, i8* } %array, i8* %ptr) {
entry:
%array_ptr = extractvalue {i64, i8* } %array, 1
%cond = icmp eq i8* %array_ptr, %ptr
br i1 %cond, label %equal, label %unequal
equal:
ret i8* %array_ptr
unequal:
ret i8* %ptr
}
; CHECK-LABEL: func1:
; CHECK: cmpld {{[0-9]+}}, 4, 5
; CHECK-DAG: std 4, -[[OFFSET1:[0-9]+]]
; CHECK-DAG: std 5, -[[OFFSET2:[0-9]+]]
; CHECK: ld 3, -[[OFFSET1]](1)
; CHECK: ld 3, -[[OFFSET2]](1)
; DARWIN32: _func1:
; DARWIN32: mr
; DARWIN32: mr r[[REG1:[0-9]+]], r[[REGA:[0-9]+]]
; DARWIN32: mr r[[REG2:[0-9]+]], r[[REGB:[0-9]+]]
; DARWIN32: cmplw cr{{[0-9]+}}, r[[REGA]], r[[REGB]]
; DARWIN32: stw r[[REG1]], -[[OFFSET1:[0-9]+]]
; DARWIN32: stw r[[REG2]], -[[OFFSET2:[0-9]+]]
; DARWIN32: lwz r3, -[[OFFSET1]]
; DARWIN32: lwz r3, -[[OFFSET2]]
; DARWIN64: _func1:
; DARWIN64: mr
; DARWIN64: mr r[[REG1:[0-9]+]], r[[REGA:[0-9]+]]
; DARWIN64: mr r[[REG2:[0-9]+]], r[[REGB:[0-9]+]]
; DARWIN64: cmpld cr{{[0-9]+}}, r[[REGA]], r[[REGB]]
; DARWIN64: std r[[REG1]], -[[OFFSET1:[0-9]+]]
; DARWIN64: std r[[REG2]], -[[OFFSET2:[0-9]+]]
; DARWIN64: ld r3, -[[OFFSET1]]
; DARWIN64: ld r3, -[[OFFSET2]]
define i8* @func2({ i64, i8* } %array1, %tarray* byval %array2) {
entry:
%array1_ptr = extractvalue {i64, i8* } %array1, 1
%tmp = getelementptr inbounds %tarray, %tarray* %array2, i32 0, i32 1
%array2_ptr = load i8*, i8** %tmp
%cond = icmp eq i8* %array1_ptr, %array2_ptr
br i1 %cond, label %equal, label %unequal
equal:
ret i8* %array1_ptr
unequal:
ret i8* %array2_ptr
}
; CHECK-LABEL: func2:
; CHECK: ld [[REG2:[0-9]+]], 72(1)
; CHECK: cmpld {{[0-9]+}}, 4, [[REG2]]
; CHECK-DAG: std [[REG2]], -[[OFFSET1:[0-9]+]]
; CHECK-DAG: std 4, -[[OFFSET2:[0-9]+]]
; CHECK: ld 3, -[[OFFSET2]](1)
; CHECK: ld 3, -[[OFFSET1]](1)
; DARWIN32: _func2:
; DARWIN32: addi r[[REG1:[0-9]+]], r[[REGSP:[0-9]+]], 36
; DARWIN32: lwz r[[REG2:[0-9]+]], 44(r[[REGSP]])
; DARWIN32: mr
; DARWIN32: mr r[[REG3:[0-9]+]], r[[REGA:[0-9]+]]
; DARWIN32: cmplw cr{{[0-9]+}}, r[[REGA]], r[[REG2]]
; DARWIN32: stw r[[REG3]], -[[OFFSET1:[0-9]+]]
; DARWIN32: stw r[[REG2]], -[[OFFSET2:[0-9]+]]
; DARWIN32: lwz r3, -[[OFFSET1]]
; DARWIN32: lwz r3, -[[OFFSET2]]
; DARWIN64: _func2:
; DARWIN64: ld r[[REG2:[0-9]+]], 72(r1)
; DARWIN64: mr
; DARWIN64: mr r[[REG3:[0-9]+]], r[[REGA:[0-9]+]]
; DARWIN64: cmpld cr{{[0-9]+}}, r[[REGA]], r[[REG2]]
; DARWIN64: std r[[REG3]], -[[OFFSET1:[0-9]+]]
; DARWIN64: std r[[REG2]], -[[OFFSET2:[0-9]+]]
; DARWIN64: ld r3, -[[OFFSET1]]
; DARWIN64: ld r3, -[[OFFSET2]]
define i8* @func3({ i64, i8* }* byval %array1, %tarray* byval %array2) {
entry:
%tmp1 = getelementptr inbounds { i64, i8* }, { i64, i8* }* %array1, i32 0, i32 1
%array1_ptr = load i8*, i8** %tmp1
%tmp2 = getelementptr inbounds %tarray, %tarray* %array2, i32 0, i32 1
%array2_ptr = load i8*, i8** %tmp2
%cond = icmp eq i8* %array1_ptr, %array2_ptr
br i1 %cond, label %equal, label %unequal
equal:
ret i8* %array1_ptr
unequal:
ret i8* %array2_ptr
}
; CHECK-LABEL: func3:
; CHECK: ld [[REG3:[0-9]+]], 72(1)
; CHECK: ld [[REG4:[0-9]+]], 56(1)
; CHECK: cmpld {{[0-9]+}}, [[REG4]], [[REG3]]
; CHECK: std [[REG3]], -[[OFFSET1:[0-9]+]](1)
; CHECK: std [[REG4]], -[[OFFSET2:[0-9]+]](1)
; CHECK: ld 3, -[[OFFSET2]](1)
; CHECK: ld 3, -[[OFFSET1]](1)
; DARWIN32: _func3:
; DARWIN32: addi r[[REG1:[0-9]+]], r[[REGSP:[0-9]+]], 36
; DARWIN32: addi r[[REG2:[0-9]+]], r[[REGSP]], 24
; DARWIN32: lwz r[[REG3:[0-9]+]], 44(r[[REGSP]])
; DARWIN32: lwz r[[REG4:[0-9]+]], 32(r[[REGSP]])
; DARWIN32: cmplw cr{{[0-9]+}}, r[[REG4]], r[[REG3]]
; DARWIN32: stw r[[REG3]], -[[OFFSET1:[0-9]+]]
; DARWIN32: stw r[[REG4]], -[[OFFSET2:[0-9]+]]
; DARWIN32: lwz r3, -[[OFFSET2]]
; DARWIN32: lwz r3, -[[OFFSET1]]
; DARWIN64: _func3:
; DARWIN64: ld r[[REG3:[0-9]+]], 72(r1)
; DARWIN64: ld r[[REG4:[0-9]+]], 56(r1)
; DARWIN64: cmpld cr{{[0-9]+}}, r[[REG4]], r[[REG3]]
; DARWIN64: std r[[REG3]], -[[OFFSET1:[0-9]+]]
; DARWIN64: std r[[REG4]], -[[OFFSET2:[0-9]+]]
; DARWIN64: ld r3, -[[OFFSET2]]
; DARWIN64: ld r3, -[[OFFSET1]]
define i8* @func4(i64 %p1, i64 %p2, i64 %p3, i64 %p4,
i64 %p5, i64 %p6, i64 %p7, i64 %p8,
{ i64, i8* } %array1, %tarray* byval %array2) {
entry:
%array1_ptr = extractvalue {i64, i8* } %array1, 1
%tmp = getelementptr inbounds %tarray, %tarray* %array2, i32 0, i32 1
%array2_ptr = load i8*, i8** %tmp
%cond = icmp eq i8* %array1_ptr, %array2_ptr
br i1 %cond, label %equal, label %unequal
equal:
ret i8* %array1_ptr
unequal:
ret i8* %array2_ptr
}
; CHECK-LABEL: func4:
; CHECK: ld [[REG3:[0-9]+]], 136(1)
; CHECK: ld [[REG2:[0-9]+]], 120(1)
; CHECK: cmpld {{[0-9]+}}, [[REG2]], [[REG3]]
; CHECK: std [[REG3]], -[[OFFSET2:[0-9]+]](1)
; CHECK: std [[REG2]], -[[OFFSET1:[0-9]+]](1)
; CHECK: ld 3, -[[OFFSET1]](1)
; CHECK: ld 3, -[[OFFSET2]](1)
; DARWIN32: _func4:
; DARWIN32: lwz r[[REG4:[0-9]+]], 96(r1)
; DARWIN32: addi r[[REG1:[0-9]+]], r1, 100
; DARWIN32: lwz r[[REG3:[0-9]+]], 108(r1)
; DARWIN32: mr r[[REG2:[0-9]+]], r[[REG4]]
; DARWIN32: cmplw cr{{[0-9]+}}, r[[REG4]], r[[REG3]]
; DARWIN32: stw r[[REG2]], -[[OFFSET1:[0-9]+]]
; DARWIN32: stw r[[REG3]], -[[OFFSET2:[0-9]+]]
; DARWIN32: lwz r[[REG1]], -[[OFFSET1]]
; DARWIN32: lwz r[[REG1]], -[[OFFSET2]]
; DARWIN64: _func4:
; DARWIN64: ld r[[REG2:[0-9]+]], 120(r1)
; DARWIN64: ld r[[REG3:[0-9]+]], 136(r1)
; DARWIN64: mr r[[REG4:[0-9]+]], r[[REG2]]
; DARWIN64: cmpld cr{{[0-9]+}}, r[[REG2]], r[[REG3]]
; DARWIN64: std r[[REG4]], -[[OFFSET1:[0-9]+]]
; DARWIN64: std r[[REG3]], -[[OFFSET2:[0-9]+]]
; DARWIN64: ld r3, -[[OFFSET1]]
; DARWIN64: ld r3, -[[OFFSET2]]
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